english

国際会議

2020

  • [373] K. Kasai, M. Nakazawa, M. Yoshida, K. Iwatsuki, and T. Hirooka, “Digital Coherent Optical Access Technologies for Beyond 5G Network,” Invited talk, 2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), TH4A.2, September (2020).
  • [372] T. Murakami, Y. Kishi, K. Ishibashi, K. Kasai, H. Shinbo, M. Tamai, K. Tsuda, M. Nakazawa, Y. Tsukamoto, H. Yokoyama, Y. Fujii, Y. Seki, S. Nanba, and T. Hara, F. Adachi, and T. Sotoyama, “Research Project to Realize Various High-reliability Communications in Advanced 5G Network,” 2020 IEEE Wireless Communications and Networking Conference (WCNC), 19710689, May (2020).
  • [371] K. Kasai and M. Nakazawa, “10 GHz, 6.2 ps Transform-limited Coherent Optical Pulse Generation from a 1.55 μm, Self-injection Gain-switched DFB-LD,” OFC 2020, Th2A.14, March (2020).
  • [370] M. Yoshida, T. Kan, K. Kasai, T. Hirooka, and M. Nakazawa, “10 Tbit/s QAM Quantum Noise Stream Cipher Coherent Transmission over 160 km,” OFC 2020, T3D.2, March (2020).
  • [369] N. Takefushi, M. Yoshida, T. Hirooka, K. Kasai, and M. Nakazawa, “Experimental and Theoretical Analyses of GAWBS Phase Noise in Multi-core Fiber for Digital Coherent Transmission,” OFC 2020, T4J.3, March (2020).

2019

  • [368] A. Araya, K. Kasai, M. Yoshida, M. Nakazawa, and T. Tsubokawa, “Evaluation of Systematic Errors of the Compact Absolute Gravimeter TAG-1 for Network-Monitoring of Volcanic Activities,” 5th IAG Symposium on Terrestrial Gravimetry: Static and Mobile Measurements (TG-SMM 2019), Saint Petersburg, Russia Plenary papers, October (2019).
  • [367] N. Takefushi, M. Yoshida, T. Hirooka, K. Kasai, and M. Nakazawa, “Experimental and theoretical analyses of GAWBS depolarization noise in digital coherent transmission,” ECOC 2019, Tu.1.C.1, September (2019).
  • [366] T. Kan, M. Yoshida, K. Kasai, T. Hirooka, K. Iwatsuki, and M. Nakazawa, “Demonstration of on-line bi-directional 10-RRHs with an 80 Gbit/s/RRH capacity using 256 QAM WDM coherent transmission for next generation mobile fronthaul,” ECOC 2019, M.1.C.4, September (2019).
  • [365] R. Hirata, T. Hirooka, M. Yoshida, and M. Nakazawa, “Sub-Picosecond Optical Switch over Entire C-band by Using Nonlinear Optical Loop Mirror,” OECC 2019, ThC1-5, July (2019).
  • [364] N. Takefushi, M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa, “GAWBS Noise Characteristics in Digital Coherent Transmission in Various Optical Fibers,” OECC 2019, Th2C-5, July (2019).
  • [363] M. Yoshida, T. Kan, K. Kasai, T. Hirooka, and M. Nakazawa, “Real-Time 256 QAM Bi-directional Coherent Transmission in Next Generation Mobile Fronthaul,” OECC 2019, TuA2-3, July (2019).
  • [362] M. Nakazawa, “Recent progress on advanced QAM transmission and its application to quantum stream cipher and mobile fronthaul,” ISUPT 2019 (invited talk), MI2, June (2019).
  • [361] M. Minowa, H. Seki, Y. Okumura, S. Suyama, J. Terada, S. Shigematsu, Y. Takatori, H. Asano, Y. Hirano, Y. Yamao, F. Adachi, and M. Nakazawa, “5G R&D Activities for High Capacity Technologies with Ultra High-Density Multi-Band and Multi-Access Layered Cells,” 2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), 18792792, April (2019).
  • [360] M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa, “Dual-polarization on-line 256 and 512 QAM digital coherent transmission,” OFC 2019, M2H.4, March (2019).

2018

  • [359] T. Hirooka, R. Hirata, J. Wang, M. Yoshida, and M. Nakazawa, “Single-channel 10.2 Tbit/s PDM-DQPSK Nyquist pulse transmission over 300 km,” ECOC 2018, We3G.6, September (2018).
  • [358] K. Kasai, M. Yoshida, T. Hirooka, K. Iwatsuki, and M. Nakazawa, “Backward-Rayleigh-Scattering Suppressed 160 Gbit/s 256 QAM Injection-Locked Bidirectional Coherent Transmission for Next Generation Mobile Fronthaul,” ECOC 2018, Th2.71, September (2018).
  • [357] K. Kasai, M. Nakazawa, Y. Tomomatsu, and T. Endo, “Tunable Laser Diode with a Linewidth of 8 kHz and a RIN of -130 dB/Hz,” CLEO-PR 2018, W1J.4, August (2018).
  • [356] K. Kimura, J. Nitta, M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa, "Single-Channel 7.68 Tbit/s, 64 QAM Coherent Nyquist Pulse Transmission over 150 km with a Spectral Efficiency of 9.7 bit/s/Hz," OECC 2018, 5B3-4, July (2018).
  • [355] T. Kan, K. Kasai, M. Yosida, T. Hirooka, and M. Nakazawa, "50.4 Tbit/s, 128 QAM L-band WDM Injection Locked Coherent Transmission over 160 km with Spectral Efficiency of 10.5 bit/s/Hz," OECC 2018, 5B3-3, July (2018).
  • [354] K. Kasai, Y. Wang, S. Okamoto, M. Yoshida, and M. Nakazawa, "200 Gbit/s, 10 Gsymbol/s-1024 QAM Injection Locked Coherent Transmission over 160 km with a Pilot-Assisted Adaptive Equalizer," OECC 2018, 4B1-4, July (2018).
  • [353] M. Yoshida, N. Takefushi, M. Terayama, K. Kasai, T. Hirooka, and M. Nakazawa, "Reverse Phase Modulation Technique for GAWBS Noise Error Floor Elimination in 1024 QAM-160 km Digital Coherent Transmission," OECC 2018, 4B1-3, July (2018).
  • [352] M. Nakazawa, M. Yoshida, and T. Hirano, “Secure Transmission using QAM Quantum Noise Stream Cipher with Continuous Variable QKD,” OFC 2018, Invited talk, Th3E.2 March (2018).
  • [351] M. Terayama, S. Okamoto, K. Kasai, M. Yoshida, and M. Nakazawa, “4096 QAM (72 Gbit/s) Single-Carrier Coherent Optical Transmission with a Potential SE of 15.8 bit/s/Hz in All-Raman Amplified 160 km Fiber Link,” OFC 2018, Th1F.2, March (2018).
  • [350] S. Okamoto, M. Terayama, M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa, “Experimental and Numerical Comparison of Probabilistically-Shaped 4096 QAM and Uniformly-Shaped 1024 QAM in All-Raman Amplified 160 km Transmission,” OFC 2018, M3C.5, March (2018).
  • [349] K. Kasai, M. Yoshida, T. Hirooka, and M. Nakazawa, “Injection-locked Homodyne Detection for Higher-order QAM Transmission,” OFC 2018, Invited talk, M4G.1, March (2018).
  • [348] M. Nakazawa, M. Terayama, S. Okamoto, M. Yoshida, K. Kasai, and T. Hirooka, “Observation of Guided Acoustic-Wave Brillouin Scattering and its Digital Compensation in Coherent QAM Transmission,” OFC 2018, M4B.2, March (2018).

2017

  • [347] K. Kasai, T. Hirooka, M. Yoshida, M. Nakazawa, M. Shiraiwa, Y. Awaji, and N. Wada, “Single-carrier 552 Gbit/s, 46 Gbaud 64 QAM Coherent Transmission over 100 km with Co-propagating 10 Gbit/s-OOK Signals Through a Deployed ROADM Network,” ECOC 2017, P1.SC4.61, September 2017.
  • [346] K. Kasai, Y. Wang, M. Yoshida, T. Hirooka, K. Iwatsuki, and M. Nakazawa, “80 Gbit/s/ch, 256 QAM Digital Coherent Optical Transmission System with Injection-Locking for Next Generation Mobile Fronthaul Network,” ECOC 2017, Th.1.B.5, September 2017.
  • [345] K. Kimura, J. Nitta, M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa, “A New Optical Phase-Locked System Between Ultrashort Pulses for 640 Gbaud Nyquist OTDM Coherent QAM Transmission,” ECOC 2017, M.1.F.2, September 2017.
  • [344] M. Nakazawa, “Recent Progress on Ultra-High Capacity Optical Transmission using Multi-Level, Multi-Core, and Multi-Mode Techniques,” ICO-24, Invited talk, Tu2E-01, August 2017.
  • [343] M. Yoshida, K. Kasai, T. Hirooka, M. Nakazawa, K. Imamura, and R. Sugizaki, “1024 QAM Coherent Optical Transmission In 31 Km-long, 19-core Fiber With Low Crosstalk And Large Effective Area,” OECC 2017, 3-1K-2, August 2017.
  • [342] M. Nakazawa, “Invention Of LD-pumped EDFA And Their Applications From Soliton To Coherent Nyquist Pulse Transmission, CLEO-PR 2017, Invited talk, 1-3F-2, August 2017.
  • [341] T. Hirooka, “PMD issues in Nyquist transmission,” ISUPT 2017, Invited talk, July 2017.
  • [340] M. Nakazawa, “Progress on 3M Communication Systems,” ISUPT 2017, Invited talk, July 2017.
  • [339] K. Harako, M. Yoshida, T. Hirooka, and M. Nakazawa, “40 GHz, 770 fs Harmonically and Regeneratively FM Mode-Locked Erbium Fiber Laser in L-Band,” CLEO 2017, SM4L.2, May 2017.
  • [338] D. Suzuki, K. Kasai, T. Hirooka, and M. Nakazawa, “Subpicosecond Coherent Nyquist Pulse Generation for 1-Tbaud Transmission Using a C2H2 Frequency-Stabilized CW Laser and a 40 GHz Optical Comb Generator,” CLEO 2017, SM2L.5, May 2017.
  • [337] T. Kan, K. Kasai, M. Yoshida, and M. Nakazawa, “42.3-Tbit/s, 18-Gbaud 64QAM WDM coherent transmission of 160 km over full C-band using an injection locking technique with a spectral efficiency of 9 bit/s/Hz,” OFC 2017, Th3F.5, March (2017).
  • [336] M. Yoshida, J. Nitta, K. Kimura, K. Kasai, T. Hirooka, and M. Nakazawa, “Single-channel 3.84 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with frequency-stabilized and mode-locked laser,” OFC 2017, Th2A.52, March (2017).
  • [335] J. Yamamoto, T. Yajima, Y. Kinoshita, F. Ishii, M. Yoshida, T. Hirooka, and M. Nakazawa, “Fabrication of multi core fiber by using slurry casting method,” OFC 2017, Th1H.5, March (2017).
  • [334] K. Kasai, M. Nakazawa, Y. Tomomatsu, and T. Endo, “Full C-band, mode-hop-free wavelength-tunable laser diode with a linewidth of 8 kHz and a RIN of -130 dB/Hz,” OFC 2017, W1E.2, March (2017).
  • [333] Y. Wang, K. Kasai, M. Yoshida, and M. Nakazawa, “Single-carrier 216 Gbit/s, 12 Gsymbol/s 512 QAM coherent transmission over 160 km with injection-locked homodyne detection,” OFC 2017, Tu2E.1, March (2017).

2016

  • [332] M. Nakazawa, M. Yoshida, T. Hirooka, K. Kasai, and T Hirano, “Real-time 70 Gbit/s, 128 QAM Quantum Noise Stream Cipher Transmission over 100 km with Secret Keys Delivered by Continuous Variable Quantum Key Distribution System,” ECOC 2016, W.4.P1.SC5.59, September 2016.
  • [331] K. Kasai, M. Yoshida, and M. Nakazawa, “552 Gbit/s, 46 Gbaud, 64 QAM Coherent Transmission over 160 km with Simple LD-based Injection-locked Homodyne Detection,” ECOC 2016, W.4.P1.SC5.51, September 2016.
  • [330] D. Suzuki, K. Harako, T. Hirooka, and M. Nakazawa, “Single-channel 5.12 Tbit/s (1.28 Tbaud) DQPSK Transmission over 300 km Using Non-coherent Nyquist Pulses,” ECOC 2016, W.4.P1.SC5.49, September 2016.
  • [329] K. Kasai, M. Yoshida, T. Hirooka, and M. Nakazawa, “Injection-locked Homodyne Detection System for Higher-order QAM Digital Coherent Transmission,” ECOC 2016, invited talk, M1.C.3, September 2016.
  • [328] Y. Wang, K. Kasai, M. Yoshida, and M. Nakazawa, “320 Gbit/s, 256 QAM LD-based coherent transmission over 160 km with an injection-locked homodyne detection technique,” OECC 2016, ThB3-3, July 2016.
  • [327] M. Yoshida, K. Kasai, T. Hirooka, and M. Nakazawa, “1024 QAM, 7-core fiber/multi-core EDFA transmission over 100 km with an aggregated spectral efficiency of 109 bit/s/Hz,” OECC 2016, MB2-5, July 2016.
  • [326] K. Harako, D. Suzuki, T. Hirooka, and M. Nakazawa, “Roll-off factor dependence of system performance in 1.28 Tbit/s/ch-525 km Nyquist pulse transmission,” OECC 2016, MB1-2, July 2016.
  • [325] M. Nakazawa, “Ultrahigh speed and high spectral efficiency transmission using optical Nyquist pulses,” OECC 2016, invited talk, MB1-1, July 2016.
  • [324] K. Kasai, M. Nakazawa, M. Ishikawa, and H. Ishii, “An 8 kHz linewidth, 50 mW output wavelength tunable DFB LD array over the C-band with self optical feedback,” CLEO 2016, SW4M.2.
  • [323] M. Yoshida, K. Yoshida, K. Kasai, and M. Nakazawa, “A 0.95 ps, 10 GHz, 60 mW HCN frequency-stabilized and mode-locked fiber laser at 1.55 μm,” CLEO 2016, STu1P.3.
  • [322] T. Hirooka, K. Tokuhira, M. Yoshida, and M. Nakazawa, “A 440 fs, 9.2 GHz hybrid mode-locked erbium fiber laser with a combination of higher-order solitons and a SESAM saturable absorber,” CLEO 2016, STu1P.4
  • [321] M. Nakazawa and T. Hirooka, “A mode locking theory of the Nyquist laser,” CLEO 2016, JTu5A.107.
  • [320] M. Nakazawa, “ “Multi” is everywhere,” CLEO 2016, plenary talk.
  • [319] M. Yoshida, T. Hirooka, and M. Nakazawa, “Mode coupling measurement at a splice point between few-mode fibers using a synchronous multi-channel OTDR,” OFC 2016, Th1J.4.
  • [318] K. Kasai, M. Yoshida, and M. Nakazawa, “A 295 mW output, HCN frequency-stabilized CW erbium silica fiber laser with a linewidth of 5 kHz and a RIN of -120 dB/Hz,” OFC 2016, W3E.1.
  • [317] M. Yoshida, T. Hirooka, and M. Nakazawa, “Fused type fan-out device for multi-core fiber based on bundled structure,” OFC 2016, Tu3I.2.
  • [316] T. Hirooka, M. Yoshida, K. Kasai, and M. Nakazawa, “Optical and wireless-integrated next-generation access network based on coherent technologies,” Photonics West 2016, Invited talk, 9772-2, February 2016.

2015

  • [315] M. Yoshida, T. Hirooka, K. Kasai, and M. Nakazawa, “QAM quantum noise stream cipher using digital coherent optical transmission,” Forty-Ninth Asilomar Conference on Signals, Systems and Computers, Invited talk, TP1-9, November 2015.
  • [314] M. Yoshida, T. Hirooka, K. Kasai, and M. Nakazawa, “Real-time Adaptive 4-64 QAM, 20-60 Gbit/s Quantum Noise Stream Cipher Transmission over 320 km with FPGA-based Transmitter and Receiver,” ECOC 2015, P.5.13.
  • [313] M. Nakazawa, “QAM Quantum Noise Stream Cipher Transmission with Extremely High Security,” ECOC 2015, Invited talk, Th.2.5.1.
  • [312] K. Kasai, D. O. Otuya, K. Harako, T. Hirooka and M. Nakazawa, “High-Speed, High Spectrally Efficient 64 QAMOrthogonal TDM Coherent Nyquist Pulse Transmission,” IEEE Summer Topicals 2015, Invited talk, MF1.3, July 2015.
  • [311] D. Suzuki, D. Seya, K. Harako, T. Hirooka, and M. Nakazawa, “2.56 Tbit/s/ch polarization-multiplexed DQPSK non-coherent Nyquist pulse transmission over 525 km,” ISUPT/EXAT 2015, P-35, July 2015.
  • [310] K. Yoshida, K. Kasai, M. Yoshida, and M. Nakazawa, “HCN frequency-stabilized 10 GHz mode-locked fiber laser,” ISUPT/EXAT 2015, P-34, July 2015.
  • [309] T. Hirooka, “Generation of optical Nyquist pulses and their applications to high speed/high spectral efficiency transmission,” ISUPT/EXAT 2015, Invited talk, M2.1, July 2015.
  • [308] M. Nakazawa, “Distributed mode-coupling measurements in MCF and FMF using a synchronous multi-channel OTDR,” ISUPT/EXAT 2015, Invited talk, T1.2, July 2015.
  • [307] M. Nakazawa, “Ultrafast Spectrally-Efficient TDM Multiplexing/Demultiplexing Schemes Using Orthogonality in Coherent Optical Nyquist Pulses,” SPPCom 2015, Invited talk, SpM3E.1, June 2015.
  • [306] T. Hirooka, M. Yoshida, K. Kasai, and M. Nakazawa, “Multi-core Fibers and Systems for Space-division Multiplexing,” Photonics North 2015, Invited talk, 7.60, June 2015.
  • [305] A. Fujisaki, M. Yoshida, T. Hirooka, and M. Nakazawa, “Generation of 10 W, 100 fs, 10 GHz pulse train using high power EDFA-MOPA system with cascaded Raman pumping,” CLEO 2015, STh1L.7.
  • [304] M. Yoshida, T. Hirooka, K. Kasai, and M. Nakazawa, “Real-time 10vGbit/s-16 QAM quantum stream cipher transmission over 320 km with FPGA-based transmitter and receiver,” OFC 2015, W4F.4.
  • [303] K. Kasai, S. Beppu, Y. Wang, and M. Nakazawa, “256 QAM (polarization-multiplexed, 5 Gsymbol/s) coherent transmission with an injection-locked homodyne detection technique,” OFC 2015, W1E.4.
  • [302] D. O. Otuya, K. Harako, K. Kasai, T. Hirooka, and M. Nakazawa, “Single-channel 1.92 Tbit/s, 64 QAM coherent orthogonal TDM transmission of 160 Gbaud optical Nyquist pulses with 10.6 bit/s/Hz spectral efficiency,” OFC 2015, M3G.2.
  • [301] T. Sakano, T. Komukai, A. Takahara, T. Hirooka, and M. Nakazawa, “Ad-hoc photonic network based on movable and deployable ICT resource unit to meet rapidly changing service demands,” OFC 2015, M2A.1.

2014

  • [300] M. Nakazawa, M. Yoshida, and T. Hirooka, “A Single-channel 40 Gbit/s Digital Coherent QAM Quantum Stream Cipher Transmission over 480 km,” ACP 2014, ATh4E.1, November (2014).
  • [299] Y. Wang, S. Beppu, K. Kasai, M. Yoshida, and M. Nakazawa, "140 Gbit/s, 128 QAM LD-based Coherent Transmission over 150 km with an Injection-locked Homodyne Detection Technique," ACP 2014, ATh1E.3, November (2014).
  • [298] M. Nakazawa, "Exabit Optical Communication Infrastructure Using 3M Scheme," ACP 2014, Plenary Talk, November (2014).
  • [297] D. O. Otuya, K. Harako, K. Kasai, T. Hirooka, and M. Nakazawa, “A single-channel 960 Gbit/s 64 QAM orthogonal TDM transmission with a spectral efficiency of 10.0 bit/s/Hz using coherent Nyquist pulses,” ECOC 2014, We.2.3.4.
  • [296] K. Harako, D. O. Otuya, K. Kasai, T. Hirooka, and M. Nakazawa ,” Novel ultrafast TDM demultiplexing scheme using orthogonality in coherent Nyquist pulses,” ECOC 2014, Tu4.6.5.
  • [295] M. Yoshida, T. Hirooka, K. Kasai, and M. Nakazawa, “Real-time adaptive 4-64 QAM coherent optical transmission over 320 km with FPGA-based transmitter and receiver,” ECOC 2014, Th.2.5.2.
  • [294] T. Yajima, J. Yamamoto, Y. Kinoshita, F. Ishii, T. Hirooka, M. Yoshida, and M. Nakazawa, “OH-free, low loss single-mode fibre fabricated by slurry casting / rod-in-tube method,” ECOC 2014, Th2.4.4.
  • [293] Y. Wang, K. Kasai, M. Yoshida, and M. Nakazawa, “A 6 kHz linewidth, injection-locked LD using a master erbium fiber laser,” OECC 2014, TU6F-5.
  • [292] T. Hirooka, L. Chen, and M. Nakazawa, “Q margin comparison of RZ and Nyquist optical pulses in ultrahigh-speed TDM transmission,” OECC 2014, MO2B-3.
  • [291] M. Nakazawa, “Ultrahigh spectral efficiency systems - pushing the limits of multi-level modulation, multi-core fiber, and multi-mode control,” OECC 2014 (tutorial), WE7G-1.
  • [290] K. Kasai, A. Fujisaki, M. Yoshida, T. Hirooka, M. Nakazawa, and S. Masuda, “A 160 mW output, 5 kHz linewidth frequency-stabilized erbium silica fiber laser with a short cavity configuration,” CLEO 2014, SW1N.4.
  • [289] M. Nakazawa, M. Yoshida, and K. Tsuzuki, “A 380 fs, 40 GHz mode-locked erbium fiber laser with an MQW nonlinear PM/AM modulator using the Pockels effect and the QCSE,” CLEO 2014, STu1N.6.
  • [288] D. Seya, K. Harako, T. Hirooka, and M. Nakazawa, “All-optical high-performance demultiplexing using optical Nyquist pulse sampling,” OFC 2014, W4F.2.
  • [287] M. Nakazawa, M. Yoshida, and T. Hirooka, “Measurement of mode coupling distribution along a few-mode fiber using a synchronous multi-channel OTDR,” OFC 2014, W3D.7.
  • [286] T. Hirooka, M. Nakazawa, T. Komukai, and T. Sakano, “100 Gbit/s DP-QPSK transmission over a 32 km legacy multi-mode GI fiber using a real-time digital coherent transceiver,” OFC 2014, W2A.1.
  • [285] S. Beppu, M. Yoshida, K. Kasai, and M. Nakazawa, “2048 QAM (66 Gbit/s) Single-Carrier Coherent Optical Transmission over 150 km with a Potential SE of 15.3 bit/s/Hz,” OFC 2014, W1A.6.
  • [284] D. O. Otuya, K. Kasai, T. Hirooka, M. Yoshida, and M. Nakazawa, “1.92 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 7.5 bit/s/Hz,” OFC 2014, W1A.4.

2013

  • [283] K. Imamura, R. Sugizaki, T. Yagi, M. Yoshida, and M. Nakazawa, “Investigation of the Influence of Fusion Splice on Crosstalk Properties of Multicore Fiber,” IWCS 2013, P-1.
  • [282] M. Nakazawa, M. Yoshida, and T. Hirooka, “Nondestructive measurement of mode-coupling along a multi-core fiber using a synchronous multi-channel OTDR,” International Symposium on Extremely Advanced Transmission Technology (EXAT 2013), pp. 60-63 (2013).
  • [281] M. Nakazawa, "Exa-bit optical communication exploring by 3M scheme," 18th Microoptics Conference (MOC’13), Plenary Talk.
  • [280] K Koizumi, T Hirooka, M Yoshida, and M Nakazawa, “Single-channel 1.28 Tbit/s Transmission over 58 km in the 1.1 μm Band with Wideband GVD and Dispersion Slope Compensation,” ECOC 2013, We.4.C.2.
  • [279] Y Wang, K Kasai, T Omiya, and M Nakazawa, “120 Gbit/s, 64 QAM Coherent Transmission Employing an Optical Voltage Controlled Oscillator,” ECOC 2013, Mo.4.C.2.
  • [278] T. Hirooka, M. Nakazawa, H. Kubota, T. Komukai, and T. Sakano, “Dynamic optical transport connection with a 100 Gbit/s digital coherent optical transponder for disaster-resilient networking,” IEEE Region 10 Humanitarian Technology Conference (IEEE R10-HTC 2013), TS10-4, August (2013).
  • [277] T. Hirooka and M. Nakazawa, “"Orthogonal TDM Using Optical Nyquist Pulses,” Signal Processing in Photonic Communications (SPPCom 2013), Invited talk, SPM1D.3.
  • [276] M. Yoshida, T. Hirooka, M. Nakazawa, “Measurement of Structural Irregularity Dependence on Mode Coupling along Multi-Core Fiber Using Multi-Channel OTDR System,” IEEE Summer Topicals 2013, MC3.3.
  • [275] K. Harako, T. Hirooka, and M. Nakazawa, “Marked Reduction of Depolarization-Induced Crosstalk in Ultrahigh-Speed Pol-MUX Transmission with an Optical Nyquist Pulse,” OECC 2013, WR4-5.
  • [274] D. O. Otuya, K. Kasai, T. Hirooka, M. Yoshida, and M. Nakazawa, “A Single-Channel 1.92 Tbit/s, 64 QAM Coherent Pulse OTDM Transmission over 150 km,” OECC 2013, WR2-2.
  • [273] T. Sakano, H. Kubota, T. Komukai, T. Hirooka, and M. Nakazawa, “Resilient Photonic Network Architecture with Plug & play Optical Interconnection Technology,” OECC 2013, TuQ3-5.
  • [272] T. Omiya, M. Yoshida, and M. Nakazawa, “1 Tbit/s 256 QAM-OFDM transmission over 560 km with 14.3 bit/s/Hz spectral efficiency,” OECC 2013, MR1-2.
  • [271] A. Fujisaki, K. Kasai, M. Yoshida, T. Hirooka, and M. Nakazawa, “Generation of 9 W, 4 kHz linewidth 13C2H2 frequency-stabilized fiber laser output with core pumped erbium-doped amplifier,” Conference on Lasers and Electro-Optics (CLEO2013), CW3M.1, June (2013).
  • [270] Y. Tsuchida, K. Maeda, K. Watanabe, T. Ito, K. Fukuchi, M. Yoshida, Y. Mimura, R. Sugizaki, and M. Nakazawa, “Multicore EDFA for DWDM transmission in full c-band,” Optical Fiber Communication Conference (OFC2013), JW2A.16, March (2013).
  • [269] K. Harako, P. Ruan, T. Hirooka, and M. Nakazawa, “Large PMD Tolerant 1.28 Tbit/s/ch Transmission over 525 km with 640 Gbaud Optical Nyquist Pulses,” Optical Fiber Communication Conference (OFC2013), JW2A.38, March (2013).
  • [268] D. Otuya, K. Kasai, T. Hirooka, M. Yoshida, M. Nakazawa, T. Hara, and S. Oikawa, “A Single-Channel, 1.6 Tbit/s 32 QAM Coherent Pulse Transmission Over 150 km With RZ-CW Conversion and FDE Techniques,” Optical Fiber Communication Conference (OFC2013), OTh4E.4, March (2013).
  • [267] T. Omiya, M. Yoshida, and M. Nakazawa, “400 Gbit/s 256 QAM-OFDM Transmission over 720 km with a 14 bit/s/Hz Spectral Efficiency Using an Improved FDE Technique,” Optical Fiber Communication Conference (OFC2013), OTh4E.1, March (2013).
  • [266] K. Kasai, Y. Wang, and M. Nakazawa, “An LD-Based Ultra-Low Phase Noise OPLL Circuit Using an Optical Voltage Controlled Oscillator,” Optical Fiber Communication Conference (OFC2013), OW3D.2, March (2013).

2012

  • [265] M. Nakazawa, “Preparation for Ultrahigh-Capacity SDM Transmission,” IEEE Photonics Society Summer Topical Meeting (SUM2012), Invited paper, MC2.2, July (2012).
  • [264] T. Yajima, J. Yamamoto, F. Ishii, T. Hirooka, M. Yoshida, and M. Nakazawa, "Low Loss Photonic Crystal Fiber Fabricated by Slurry Casting Method," Conference on Lasers and Electro Optics (CLEO2012), CTh3G.1, May (2012).
  • [263] T. Omiya, K. Toyoda, M. Yoshida, and M. Nakazawa, “400 Gbit/s Frequency-Division-Multiplexed and Polarization-Multiplexed 256 QAM-OFDM Transmission over 400 km with a Spectral Efficiency of 14 bit/s/Hz,” Optical Fiber Communication Conference (OFC2012), OM2A.7, March (2012).
  • [262] T. Hirooka, K. Harako, P. Guan, and M. Nakazawa, “Bandwidth and distance dependences of depolarization-induced crosstalk in polarization-multiplexed transmission,” Optical Fiber Communication Conference (OFC2012), JW2A.44, March (2012).
  • [261] M. Nakazawa, M. Yoshida, and T. Hirooka, “Measurement of Mode Couplings along a Multi-Core Fiber Using a Multi-Channel OTDR,” Optical Fiber Communication Conference (OFC2012), OTh3I.3, March (2012).
  • [260] M. Nakazawa, “Extremely Advanced Transmission with 3M Technologies (Multi-level Modulation, Multi-core & Multi-mode),” Optical Fiber Communication Conference (OFC2012), OTu1D.1 (Invited talk), March (2012).

2011

  • [259] Y. Hori, Z. Zhang, and M. Nakazawa, “1070 nm passively mode-locked ytterbium-doped fiber solition laser with SWNT/PMMA saturable absorber,” 17th Microoptics Conference (MOC’11), H-18, Oct. (2011).
  • [258] K. Koizumi, M. Yoshida, T. Hirooka, and M. Nakazawa, “10 GHz, 1.1 ps pulse generation from a harmonically and regeneratively mode-locked Yb fiber laser at 1.1 μm,” 17th Microoptics Conference (MOC’11), H-22, Oct. (2011).
  • [257] K. Kasai, M. Nakazawa, and H. Yamazaki, “Absolute frequency stabilization of a laser diode based on triple ring resonators to an C2H2 absorption line,” 17th Microoptics Conference (MOC’11), G-4, Oct. (2011).
  • [256] M. Yoshida, F. Suzuki, T. Morisaki, and M. Nakazawa, “Absolutely optical-frequency-stabilized cesium optical atomic clock,” 17th Microoptics Conference (MOC’11), B-2, Oct. (2011).
  • [255] M. Nakazawa, “CNT-based mode-locked lasers,” 17th Microoptics Conference (MOC’11), E-2, Oct. (2011).
  • [254] M. Nakazawa, “ “Multi” is everywhere,” Chitose International Forum on Photonics Science & Technology, Plenary Talk, Oct. (2011).
  • [253] P. Guan, T. Hirano, K. Harako, Y. Tomiyama, T. Hirooka, and M.Nakazawa, “2.56 Tbit/s/ch Polarization-mutliplexed DQPSK Transmission over 300 km Using Time-domain optical Fourier Transformation,” European Conference on Optical Communication (ECOC2011), We.10.P1,80, September (2011).
  • [252] M. Nakazawa, K. Kasai, M. Yoshida, and T. Hirooka, “Novel RZ-CW Conversion Scheme for Ultra Multi-level, High-speed Coherent OTDM Transmission,” European Conference on Optical Communication (ECOC2011), We.10.P1,75, September (2011).
  • [251] T. Hirooka, K. Kasai, and M. Nakazawa, “Recent Progress on Ultra-high Speed and Multi Level Coherent Transmission,” Korea-Japan Workshop on Beyond 100G, Invited Talk, June (2011).
  • [250] M. Nakazawa, “ “Multi” is everywhere,” Korea-Japan Workshop on Beyond 100G, Plenary Talk, June (2011).
  • [249] M. Nakazawa, "Ultrafast and high-spectral-density optical communications systems," Conference on Lasers and Electro-Optics (CLEO 2011), Invited talk, CThGG3, May (2011).
  • [248] K. Kasai, A. Mori, and M. Nakazawa, "A 13C2H2 frequency-stabilized λ/4-shifted DFB laser diode with an external fiber ring cavity having a linewidth of 2.6 kHz and a RIN of -135 dB/Hz," Conference on Lasers and Electro-Optics (CLEO 2011), CTuV4, May (2011).
  • [247] K. Koizumi, M. Yoshida, T. Hirooka, and M. Nakazawa, "A 10 GHz 2.5 ps regeneratively mode-locked Yb fiber laser in the 1.1 μm band," Conference on Lasers and Electro-Optics (CLEO 2011), CMBB3, May (2011).
  • [246] T. Hirooka, T. Hirano, P. Guan, M. Nakazawa, "New PMD-induced crosstalk in the presence of PDL in a polarization-multiplexed ultrahigh-speed transmission," Optical Fiber Communication Conference (OFC 2011), JThA44, March (2011).
  • [245] M. Yoshida, T. Omiya, K. Kasai, M. Nakazawa, "Real-time FPGA-based coherent optical receiver for 1 Gsymbol/s, 64 QAM transmission," Optical Fiber Communication Conference (OFC 2011), OTuN3, March (2011).

2010

  • [244] T. Hirooka and M. Nakazawa, "Recent progress on ultra-high speed and multi level coherent transmission," Photonics 2010, Invited talk, M2B3, December (2010).
  • [243] S. Okamoto, K. Toyoda, T. Omiya, K. Kasai, M. Yoshida, and M. Nakazawa, "512 QAM (54 Gbit/s) coherent optical transmission over 150 km with an optical bandwidth of 4.1 GHz," European Conference on Optical Communication (ECOC 2010), PD2.3, September (2010).
  • [242] P. Guan, H. C. Hansen Mulvad, Y. Tomiyama, T. Hirano, T. Hirooka, and M. Nakazawa, "1.28 Tbit/s/channel single-polarization DQPSK transmission over 525 km using ultrafast time-domain optical Fourier transformation," European Conference on Optical Communication (ECOC 2010), We.6.C.3, September (2010).
  • [241] H. C. Hansen Mulvad, P. Guan, K. Kasai, T. Hirooka, and M. Nakazawa, "High-resolution 640 Gbit/s clock recovery using time-domain optical Fourier transformation and narrowband optical filter," European Conference on Optical Communication (ECOC 2010), Mo.1.A.6, September (2010).
  • [240] M. Nakazawa, "Giant leaps in optical communication technologies towards 2030 and beyond," European Conference on Optical Communication (ECOC 2010), Plenary Talk, September (2010).
  • [239] M. Nakazawa, "Ultrahigh-speed coherent RZ pulse transmission with OTDM technology," International Symposium on Ultra-high Capacity Optical Communication and Related Optical Signal Processing and Devices, Invited talk, September (2010).
  • [238] M. Nakazawa, "Hardware paradigm shifts in the optical communication infrastructure with three "M technologies," Opto Electronics and Communications Conference (OECC 2010), Plenary Talk, July (2010).
  • [237] F. Shohda M. Nakazawa, R. Akimoto, and H. Ishikawa, "An 88 fs fiber soliton laser at 1.56 μm using a quantum well saturable absorber with an ultrafast intersubband transition," Conference on Lasers and Electro-Optics (CLEO 2010), JTuD60, May (2010).
  • [236] F. Shohda, M. Nakazawa, J. Mata, and J. Tsukamoto, "A film-type saturable absorber with P3HT-incorporated single-wall carbon nanotubes coated on polyamide and its application to a femtosecond fiber laser," Conference on Lasers and Electro-Optics (CLEO 2010), JTuD52, May (2010).
  • [235] K. Kasai and M. Nakazawa, "A C2H2 frequency-stabilized laser diode with a linewidth of 4 kHz and its application to an optical phase-locked loop," Conference on Lasers and Electro-Optics (CLEO 2010), CTuKK7, May (2010).
  • [234] T. Morisaki, M. Yoshida, and M. Nakazawa, "Optical frequency-tunable Cs atomic clock with a mode-hop-free fiber laser," Conference on Lasers and Electro-Optics (CLEO 2010), CMN2, May (2010).
  • [233] K. Koizumi, M. Yoshida, and M. Nakazawa, "A 10 GHz opto-electronic oscillator at 1.1 μm using a gain-switched InGaAs VCSEL and a photonic crystal fiber," Conference on Lasers and Electro-Optics (CLEO 2010), CMA7, May (2010).
  • [232] M. Nakazawa, "Device requirements for next generation optical transmission technology," Tutorial, ECIO 2010, FrC1, April (2010).
  • [231] T. Hirooka, "Recent Progress on OTDM Terabit/s Transmission and Their Future," Tutorial talk, Optical Fiber Communication Conference (OFC 2010), OWM5, March (2010).
  • [230] K. Koizumi, M. Yoshida, T. Hirooka, and M. Nakazawa, "10 Gbit/s Photonic Crystal Fiber Transmissions with 1.1 μm Directly-Modulated Single-Mode VCSEL," Optical Fiber Communication Conference (OFC 2010), OWK3, March (2010).
  • [229] T. Hirano, P. Guan, T. Hirooka, and M. Nakazawa, "640 Gbit/s Single-Polarization DPSK Transmission over 525 km with Time-Domain Optical Fourier Transformation in a Round-Trip Configuration," Optical Fiber Communication Conference (OFC 2010), OThD7, March (2010).
  • [228] K. Kasai, T. Omiya, P. Guan, M. Yoshida, T. Hirooka, and M. Nakazawa, "Single-Channel 400 Gbit/s, OTDM-32 RZ/QAM Coherent Transmission over 225 km Using an Optical Phase-Locked Loop Technique," Optical Fiber Communication Conference (OFC 2010), OThD6, March (2010).
  • [227] S. Okamoto, T. Omiya, K. Kasai, M. Yoshida, and M. Nakazawa, "140 Gbit/s Coherent Optical Transmission over 150 km with a 10 Gsymbol/s Polarization-Multiplexed 128 QAM Signal," Optical Fiber Communication Conference (OFC 2010), OThD5, March (2010).
  • [226] M. Nakazawa, S. Okamoto, T. Omiya, K. Kasai, and M. Yoshida, "256 QAM (64 Gbit/s) Coherent Optical Transmission over 160 km with an Optical Bandwidth of 5.4 GHz," Optical Fiber Communication Conference (OFC 2010), OMJ5, March (2010).

2009

  • [225] P. Guan, M. Okazaki, T. Hirano, T. Hirooka, and M. Nakazawa, "Low-penalty 5x320 Gbit/s (1.6 Tbit/s) WDM DPSK transmission over 525 km using time-domain optical Fourier transformation," European Conference on Optical Communication (ECOC 2009), 6.4.4, September (2009).
  • [224] T. Hirooka, M. Okazaki, T. Hirano, P. Guan, M. Nakazawa, and S. Nakamura, "All-optical demultiplexing of 640 Gbit/s OTDM-DPSK signal using a semiconductor SMZ switch," European Conference on Optical Communication (ECOC 2009), 4.3.2, September (2009).
  • [223] T. Omiya, H. Goto, K. Kasai, M. Yoshida, and M. Nakazawa, "24 Gbit/s, 64 QAM-OFDM coherent transmission with a bandwidth of 2.5 GHz," European Conference on Optical Communication (ECOC 2009), 1.3.2, September (2009).
  • [222] T. Hirooka and M. Nakazawa, "Ultrafast transmission technology using time-domain optical Fourier transformation," IEEE/LEOS Summer Topicals 2009, Invited paper, MC2.4, July (2009).
  • [221] M. Nakazawa, "Recent progress on ultrafast/ultrashort/frequency-stabilized erbium-doped fiber lasers and their applications," International Conference on Materials for Advanced Technologies (ICMAT 2009), Invited paper, P-S1.3-4, June (2009).
  • [220] M. Yoshida, I. Kashiwamura, T. Hirooka, and M. Nakazawa, "Delivery of an Ultrastable Cs Optical Atomic Clock Using a JGN II Optical Test Bed" Conference on Lasers and Electro Optics (CLEO 2009), CTuS3, May (2009).
  • [219] M. Nakazawa, M. Yoshida, and K. Kasai, "C2H2 Absolutely Optical Frequency-Stabilized and 40 GHz Repetition-Rate-Stabilized, Regeneratively Mode-Locked Picosecond Erbium Fiber Laser at 1.53 μm," Conference on Lasers and Electro Optics (CLEO 2009), CMY4, May (2009).
  • [218] F. Shohda, T. Shirato, M. Nakazawa, J. Mata, and J. Tsukamoto, "147 fs, 51 MHz Soliton Fiber Laser at 1.56 μm with a Fiber-Connector-Type SWNT/P3HT Saturable Absorber," Conference on Lasers and Electro Optics (CLEO 2009), CML6, May (2009).
  • [217] F. Shohda, T. Shirato, M. Nakazawa, K. Komatsu, and T. Kaino, "A Passively Mode-Locked Femtosecond Soliton Fiber Laser at 1.5 μm with a CNT-Doped Polycarbonate Saturable Absorber," Conference on Lasers and Electro Optics (CLEO 2009), CML4, May (2009).
  • [216] M. Nakazawa, “Optical quadrature amplitude modulation (QAM) with coherent detection up to 128 states,” Optical Fiber Communication Conference (OFC 2009), Invited paper, OThG1, March (2009).

2008

  • [215] M. Nakazawa and M. Yoshida, "New scheme for independently stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-locking technique," OSA Annual Meeting, Laser Science (LS2008), LTuF3, October (2008).
  • [214] M. Nakazawa, "Toward the Shannon limit optical communication," Invited paper, OSA Annual Meeting, Fronters in Optics (FiO2008), FTuH3, October (2008).
  • [213] M. Okazaki, P. Guan, T. Hirooka, M. Nakazawa, and T. Miyazaki, "160 Gbit/s-200 km field transmission experiment using a time-domain optical Fourier transformation technique with a large PMD," European Conference on Optical Communication (ECOC 2008), P.4.12, September (2008).
  • [212] T. Hirooka, M. Okazaki, P. Guan, and M. Nakazawa, "320 Gbit/s single-polarization DPSK transmission over 525 km using time-domain optical Fourier transformation," European Conference on Optical Communication (ECOC 2008), We2.E.6, September (2008).
  • [211] M. Nakazawa, "Challenges to FDM-QAM coherent transmission with ultrahigh spectral efficiency," European Conference on Optical Communication (ECOC 2008), Invited paper, Tu.1.E.1, September (2008).
  • [210] M. Yoshida, H. Goto, T. Omiya, K. Kasai, and M. Nakazawa, "Frequency division multiplexed 1 Gsymbol/s, 64 QAM coherent optical transmission with a spectral efficiency of 8.6 bit/s/Hz," European Conference on Optical Communication (ECOC 2008), Invited paper, Mo.4.D.5, September (2008).
  • [209] M. Nakazawa, "Novel modulation format and high spectral efficiency technology for coherent optical communication systems," IEEE/LEOS Summer Topicals 2008, Invited paper, TuC2.1, July (2008).
  • [208] M. Nakazawa, "Optical communication going ahead of wireless communication in terms of spectral efficiency," Workshop on High Spectral Density Optical Communication for New Generation Network, Invited talk, June (2008).
  • [207] F. Shohda, T. Shirato, M. Nakazawa, K. Komatsu, and T. Kaino, "1.5 m passively mode-locked femtosecond fiber laser with CNT-doped polymer saturable absorber," International Laser, Light-Wave and Microwave Conference (ILLMC 2008), 23-TP1-7, April (2008).
  • [206] M. Nakazawa, "1.5 μm femtsecond fiber laser with CNT-doped polymer saturable absorber," The 8th International Mini-Symposium on Advanced Organic Photonics (ISAOP-8), Invited talk, I-11, February (2008).
  • [205] H. Goto, K. Kasai, M. Yoshida, and M. Nakazawa, "Polarization-multiplexed 1 Gsymbol/s, 128 QAM (14 Gbit/s) coherent optical transmission over 160 km using a 1.4 GHz Nyquist filter," Optical Fiber Communication Conference (OFC2008), JThA45, February (2008).
  • [204] T. Hirooka and M. Nakazawa, "All-optical 40 GHz time-domain Fourier transformation using XPM with a dark parabolic pulse," Optical Fiber Communication Conference (OFC2008), OThG5, February (2008).
  • [203] T. Hirooka, M. Nakazawa, and K. Okamoto, "40 GHz bright and dark parabolic pulse generation using a picosecond optical pulse source and a 64-channel AWG," Optical Fiber Communication Conference (OFC2008), OTuC6, February (2008).

2007

  • [202] M. Nakazawa, "Advanced optical fiber device technology for ultrahigh-speed transmission," 5th Workshop on Fibers and Optical Passive Components (WFOPC2007), Plenary Talk, December (2007).
  • [201] T. Hirooka, K. Osawa, M. Okazaki, M. Nakazawa, and H. Murai, "Observation of stimulated Brillouin scattering in ultrahigh-speed in-phase and carrier-suppressed RZ OTDM transmission," European Conference on Optical Communication (ECOC2007), P085, September (2007).
  • [200] A. Suzuki, H. T. Quynhanh, M. Yoshida, and M. Nakazawa, "A /4-shifted distributed feedback semiconductor fiber ring laser with an OSNR of 85 dB and a linewidth of 7 kHz," European Conference on Optical Communication (ECOC2007), 1.4.2, September (2007).
  • [199] T. Hirooka, M. Okazaki, K. Osawa, and M. Nakazawa, "160 Gbit/s-900 km DPSK transmission with time-domain optical Fourier transformation," European Conference on Optical Communication (ECOC2007), 1.3.3, September (2007).
  • [198] M. Nakazawa, "New frontiers in optical communication: ultrahigh-speed transmission and coherent transmission," The 3rd International Symposium on Ultrafast Photonic Technolgies, Invited paper, I-1, August (2007).
  • [197] M. Nakazawa and T. Hirooka, "Terabit OTDM transmission-Key challenges," IEEE/LEOS Summer Topicals 2007, Invited paper, ME3.3, July (2007).
  • [196] M. Nakazawa, "QAM based coherent transmission technologies using DSP," IEEE/LEOS Summer Topicals 2007, Invited paper, TuA4.1, July (2007).
  • [195] K. Kasai, J. Hongo, H. Goto, M. Yoshida, and M. Nakazawa, "1 Gsymbol/s, 64 QAM coherent optical transmission with a spectral efficiency of 8 bit/s/Hz using a Nyquist filter," Optoelectronics and Communications Conference (OECC2007), Postdeadline paper PD1-1, July (2007).
  • [194] M. Yoshida, A. Ono, and M. Nakazawa, "10 GHz regeneratively mode-locked SOA fiber ring laser and its linewidth characteristics," Optoelectronics and Communications Conference (OECC2007), 13C4-2, July (2007).
  • [193] Q. A. Ho Thi, A. Suzuki, and M. Nakazawa, "A ring-type polarization-maintaining /4-shifted distributed feedback fiber laser pumped by 0.98 m laser diode," Optoelectronics and Communications Conference (OECC2007), 12C2-2, July (2007).
  • [192] H. Hasegawa, Y. Oikawa, T. Hirooka, and M. Nakazawa, "40 Gbit/s-2 km photonic crystal fiber transmission with a single-mode VCSEL," Optoelectronics and Communications Conference (OECC2007), 11P-8, July (2007).
  • [191] H. Hasegawa, Y. Oikawa, and M. Nakazawa, "10 Gbit/s-2 km photonic crystal fiber transmission over 850 nm with a directly modulated single-mode VCSEL," Optoelectronics and Communications Conference (OECC2007), 10B2-5, July (2007).
  • [190] K. Osawa, M. Okazaki, T. Hirooka, and M. Nakazawa, "Low power-penalty 160 Gbit/s DPSK transmission over 600 km," Optoelectronics and Communications Conference (OECC2007), 10B2-2, July (2007).
  • [189] T. Hirooka and M. Nakazawa, "Ultrahigh-speed signal transmission / processing technologies," Optoelectronics and Communications Conference (OECC2007), Invited paper, 10B2-1, July (2007).
  • [188] M. Nakazawa, "Advanced optical fiber and fiber device technologies for ultrahigh-speed optical transmission," Optoelectronics and Communications Conference (OECC2007), Tutotiral, 11C2-1, July (2007).
  • [187] M. Nakazawa, "Next generation ultrafast telecommunications technologies," CLEO Europe 2007, Invited paper, TF1-3TUE, June (2007).
  • [186] T. Hirayama, M. Yoshida, M. Nakazawa, K. Hagimoto, and T. Ikegami, "An ultrastable Cs optical atomic clock with a regeneratively mode-locked fiber laser and an optically pumped Cs gas cell," Conference on Lasers and Elecro-Optics (CLEO 2007), Postdeadline paper, CPDB11, May (2007).
  • [185] M. Nakazawa, "A new Cs optical atomic clock using ultrastable fiber laser and optical comb delivery through optical network," NMIJ-BIPM Joint Workshop, Invited talk, May (2007).
  • [184] T. Hirayama, M. Yoshida, M. Nakazawa, K. Hagimoto, and T. Ikegami, "A mode-locked laser-type optical atomic clock with an optically pumped Cs gas cell," Asia-Pacific Microwave Photonics Conference (AP-MWP 2007), D-38, April (2007).
  • [183] K. Kasai, J. Hongou, M. Yoshida, and M. Nakazawa, "Highly spectral-efficient QAM coherent transmission using an optical phase-locked loop over long distances," Asia-Pacific Microwave Photonics Conference (AP-MWP 2007), C-3, April (2007).
  • [182] M. Nakazawa, "Advanced fiber laser technology for microwave photonics," Asia-Pacific Microwave Photonics Conference (AP-MWP 2007), Plenary Talk, April (2007).
  • [181] M. Nakazawa, J. Hongo, K. Kasai, and M. Yoshida, "Polarization-multiplexed 1 Gsymbol/s, 64 QAM (12 Gbit/s) coherent optical transmission over 150 km with an optical bandwidth of 2 GHz," Optical Fiber Communication Conference (OFC 2007), Postdeadline paper, PDP26, March (2007).
  • [180] K. Kasai, M. Yoshida, and M. Nakazawa, "Optical phase-locked loop for coherent transmission over 500 km," Optical Fiber Communication Conference (OFC 2007), JWA49, March (2007).
  • [179] M. Yoshida, K. Kasai, and M. Nakazawa, "A mode-hop-free, frequency-tunable 40 GHz mode-locked fiber laser," Optical Fiber Communication Conference (OFC 2007), OTuF3, March (2007).
  • [178] J. Hongou, K. Kasai, M.Yoshida, and M. Nakazawa, "1 Gsymbol/s, 64 QAM coherent optical transmission over 150 km with a spectral efficiency of 3 bit/s/Hz," Optical Fiber Communication Conference (OFC 2007), OMP3, March (2007).
  • [177] M. Yoshida, K. Kasai, J. Hongo, and M. Nakazawa, "A C2H2 frequency-stabilized erbium-doped fiber laser and its application to coherent communication," SPIE Photonics West 2007, 6453-85, Invited paper, January (2007).

2006

  • [176] K. Watabe, T. Hirayama, T. Ikegami, K. Hagimoto, S. Ohshima, M. Yoshida, and M. Nakazawa, "Characteristics of Coherent Population Trapping Signals of Cs-D1 and Cs-D2 Lines," Asia pacific Time and Frequency Workshop (ATF-2006), New Delhi, India, December (2006).
  • [175] K. Kasai, M. Yoshida, and M. Nakazawa, "A 1.54 m 13C2H2 frequency-stabilized, single-polarization fiber ring laser," European Optical Society (EOS) Annual Meeting 2006, October (2006).
  • [174] A. Suzuki, Y. Takahashi, and M. Nakazawa, "Polarization-maintained, ultranarrow FBG filter with 1.3 GHz linewidth," European Optical Society (EOS) Annual Meeting 2006, October (2006).
  • [173] T. Hirooka, T. Kumakura, K. Osawa, and M. Nakazawa, "Comparison of 40 GHz optical demultiplexers using SMZ switch and EA modulator in 160 Gbit/s-500 km OTDM transmission," European Optical Society (EOS) Annual Meeting 2006, October (2006).
  • [172] H. Hasegawa, Y. Oikawa, T. Hirooka, M. Yoshida, K. Suzuki, Y. Inoue, and M. Nakazawa, "10 Gb/s x 4 channel WDM transmission over 3 km in the 800 nm region using photonic crystal fibers," European Conference on Optical Communication (ECOC 2006), We4.5.4, September (2006).
  • [171] A. Suzuki, Y. Takahashi, M. Yoshida, and M. Nakazawa, "An ultra-low noise and narrow linewidth /4-shifted DFB Er-doped fiber laser with a ring configuration," European Conference on Optical Communication (ECOC 2006), Th2.3.2, September (2006).
  • [170] T. Hirooka, K. Hagiuda, T. Kumakura, K. Osawa, and M. Nakazawa, "160 Gbit/s-600 km OTDM transmission using time-domain optical Fourier transformation," European Conference on Optical Communication (ECOC 2006), Tu1.5.4, September (2006).
  • [169] M. Nakazawa, M. Yoshida, K. Kasai, and J. Hongou, "20 Msymbol/s 128 QAM coherent optical transmission over 500 km using heterodyne detection with frequency-stabilized laser," European Conference on Optical Communication (ECOC 2006), Mo4.2.2, September (2006).
  • [168] H. Inaba, Y. Daimon, F.-L. Hong, A. Onae, K. Minoshima, T. R. Schibli, M. Hirano, T. Okuno, M. Onishi, M. Nakazawa and H. Matsumoto, "Robust and low-noise fiber based frequency comb for long-term measurement of optical frequencies," Conference on Precision Electromagnetic Measurements (CPEM 2006), Wea1-2, Torino, Itary, July (2006).
  • [167] M. Nakazawa, "Ultrahigh-speed fiber laser and its application to optical metrology," Conference on Lasers and Electro-Optics (CLEO 2006), CTuV4, Invited paper, May 21-26 (2006).
  • [166] M. Nakazawa, "Regeneratively Mode-Locked Laser as an Opto-Electronic Microwave Oscillator and Its Application to Optical Metrology," 2006 Asia-Pacific Microwave Photonics Conference (AP-MWP 2006), K-1, Invited paper, Kobe, Japan, April 24-26 (2006).
  • [165] K. Hagimoto, T. Hirayama, K. Watanabe, T. Ikegami, S. Ohshima, M. Yoshida, and M. Nakazawa, "Characteristics of CPT signals of Cs-D1 and Cs-D2 lines," Workshop on Chip Scale Atomic Clock: Status and Potentiality, 2-3, March (2006).
  • [164] K. Kasai, M. Yoshida, and M. Nakazawa, "A 13C2H2 frequency-stabilized, polarization-maintained 1.54 m erbium fiber ring laser with a new feedback system," Optical Fiber Communication Conference (OFC 2006), OWM4, March (2006).
  • [163] H. Hasegawa, Y. Oikawa, T. Hirooka, M. Yoshida, and M. Nakazawa, "10 Gb/s transmission over 3 km at 850 nm using single-mode photonic crystal fiber, single-mode VCSEL, and Si-APD," Optical Fiber Communication Conference (OFC 2006), JThB4, March (2006).
  • [162] M. Nakazawa, S. Nakahara, T. Hirooka, M. Yoshida, T. Kaino, and K. Komatsu, "Polymer saturable absorber materials in 1.5 m band using PMMA and PS with single-wall carbon nanotubes," Optical Fiber Communication Conference (OFC 2006), OThQ4, March (2006).

2005

  • [161] T. Hirooka and M. Nakazawa, "Derivation of analytical expression for third-order dispersion elimination using time-domain optical Fourier transformation," European Conference on Optical Communication (ECOC 2005), We4.P.76, September (2005).
  • [160] M. Yoshida, T. Hirayama, M. Yakabe, M. Nakazawa, Y. Koga, and K. Hagimoto, "An ultrastable PLL mode-locked fiber laser with a hydrogen maser clock," International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEO-PR 2005), Tokyo, Japan, CFM3-4, July (2005).
  • [159] T. Hiayama, M. Yakabe, M. Yoshida, M. Nakazawa, Y. Koga, and K. Hagimoto, "An ultrastable Cs optical atomic clock with a 9.1926-GHz low-drift regeneratively mode-locked fiber laser," International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEO-PR 2005), Tokyo, Japan, CFM3-3, July (2005).
  • [158] T. Hirooka and M. Nakazawa, "Ultrahigh-speed distortion-free transmission using all-optical time-domain Fourier transformation," International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEO-PR 2005), Tokyo, Japan, Invited paper, CFJ3-4-INV, July (2005).
  • [157] K. Osawa, K. Haneda, T. Hirooka, M. Yoshida, W. Suttawassuntorn and M. Nakazawa, "Measurement of optical carrier spectrum deformation in high-speed pulse transmission," International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEO-PR 2005), Tokyo, Japan, CFJ3-3, July (2005).
  • [156] H. Hasegawa, T. Hirooka and M. Nakazawa, "A new method for optimum dispersion designing of zero-dispersion and dispersion-flattened photonic crystal fibers," International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEO-PR 2005), Tokyo, Japan, CWE2-6, July (2005).
  • [155] H. Hasegawa, M. Kikegawa , M. Yoshida, T. Hirooka, and M. Nakazawa, "Observation of optimum air-hole tapering of splicing between a conventional fiber and a photonic crystal fiber and analysis of reduction of Fresnel reflection," International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEO-PR 2005), Tokyo, Japan, CWE2-4, July (2005).
  • [154] Y. Oikawa, H. Hasegawa, M. Yoshida, T. Hirooka, and M. Nakazawa, "Ultra-broadband dispersion measurement of a photonic crystal fiber with pico-second streak camera and group-delay-free supercontinuum," International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEO-PR 2005), Tokyo, Japan, CWE2-1, July (2005).
  • [153] K. Kasai, M. Yoshida, M. Nakazawa, K. Shiota, and S. Masuda, "A 13C2H2 frequency-stabilized, polarization-maintained erbium fiber ring laser with no frequency modulation," International Conference on Quantum Electronics and the Pacific Rim Conference on Lasers and Electro-Optics (IQEC/CLEO-PR 2005), Tokyo, Japan, CWI1-6, July 11-15 (2005).
  • [152] K. Kasai, M. Yoshida, and M. Nakazawa, "A C2H2 frequency-stabilized, single-polarization fiber laser," NMIJ-BIPM Workshop on the Impact of Information Technology in Metrology, P-13, May 18-20 (2005).
  • [151] T. Hirayama, M. Yakabe, M. Yoshida, M. Nakazawa, Y. Koga, K. Hagimoto, and T. Ikegami, "An ultrastable Cs optical atomic clock with a laser-type opto-microwave oscillator," NMIJ-BIPM Workshop on the Impact of Information Technology in Metrology, P-12, May 18-20 (2005).
  • [150] K. Osawa, K. Haneda, S. Waiyapot, and M. Nakazawa, "Measurement of longitudinal linewidth broadening of mode-locked lasers during ultrahigh-speed pulse transmission," NMIJ-BIPM Workshop on the Impact of Information Technology in Metrology, P-11, May 18-20 (2005).
  • [149] M. Yoshida, T. Hirayama, M. Yakabe, M. Nakazawa, Y. Koga, K. Hagimoto, and T. Ikegami, "An ultrastable PLL mode-locked fiber laser with a hydrogen maser clock," NMIJ-BIPM Workshop on the Impact of Information Technology in Metrology, P-10, May 18-20 (2005).
  • [148] M. Nakazawa, "Ultrastable mode-locked fiber lasers and their application to optical comb delivery through optical fiber networks," NMIJ-BIPM Workshop on the Impact of Information Technology in Metrology, Invited paper, WS-06, May 18-20 (2005).

2004

  • [147] K. Kasai, M. Yoshida, and M. Nakazawa, "A 13C2H2 frequency-stabilized, polarization-maintained erbium fiber ring laser with no frequency modulation," European Conference on Optical Communication (ECOC 2004), Th1.3.5, September (2004).
  • [146] K. Hagiuda, T. Hirooka, S. Ono, M. Yoshida, M. Nakazawa, S. Arahira, and Y. Ogawa, "Generation of a 40-GHz, 100-fs pulse train from a mode-locked laser diode using DDF soliton compression," European Conference on Optical Communication (ECOC 2004), Tu3.3.2, September (2004).
  • [145] T. Hirooka, M. Nakazawa, F. Futami, and S. Watanabe, "New adaptive equalization scheme for 160 Gb/s transmitted signal using time-domain optical Fourier transformation," European Conference on Optical Communication (ECOC 2004), Th1.5.3, September (2004).
  • [144] M. Yakabe, K. Nito, M. Yoshida, M. Nakazawa, Y. Koga, K. Hagimoto, and T. Ikegami, "A new ultrastable cesium optical atomic clock with a 9.1926-GHz regeneratively mode-locked fiber laser," International Conference on Ultrafast Phenomena (UP 2004), FA1, July (2004).
  • [143] H. Furumochi, A. Tada, K. Hirosawa, F. Kannari, M. Takeoka, and M. Nakazawa, "Photon number squeezing of ultrabroadband pulses generated by microstructure fibers," International Conference on Ultrafast Phenomena (UP 2004), ThD38, Niigata, Japan, July (2004).
  • [142] K. Haneda, H. Yokoyama, Y. Ogawa, and M. Nakazawa, "Linewidth and RIN measurements of longitudinal modes in ultrahigh-speed mode-locked laser diodes," International Conference on Ultrafast Phenomena (UP 2004), TuE39, July (2004).
  • [141] T. Hirooka, S. Ono, K. Hagiuda, and M. Nakazawa, "Stimulated Brillouin scattering in ultrahigh-speed femtosecond soliton compression with a dispersion-decreasing fiber," International Conference on Ultrafast Phenomena (UP 2004), TuE38, July (2004).
  • [140] M. Yoshida, T. Yaguchi, S. Harada, and M. Nakazawa, "Optimization of a 40 GHz regeneratively and harmonically mode-locked fiber laser under PLL operation and its longitudinal mode characteristics," Ultrafast Phenomena 2004, ME36, July (2004).

2003以前

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