Transmission of 32-Tb/s Capacity Over 580 km Using RZ-Shaped PDM-8QAM Modulation Format and Cascaded Multimodulus Blind Equalization Algorithm

In this paper, we propose a novel synthesizing method for high-speed 8-ary quadratic-amplitude modulation (QAM) optical signal generation using commercial optical modulators with binary electrical driving signals. Using this method, we successfully generated 114-Gb/s pulse-duration modulation (PDM)-8QAM optical signals. Intradyne detection of PDM-8QAM optical signals with robust blind polarization demultiplexing has been demonstrated by using a new cascaded multimodulus equalization algorithm. With return-to-zero-shaped PDM-8QAM modulation and the proposed blind polarization demultiplexing algorithm, we demonstrate transmission of a record 32-Tb/s fiber capacity (320 × 114 Gb/s) over 580 km of ultralow-loss single-mode fiber-28 fiber by utilizing C+L-band erbium-doped fiber-amplifier-only optical amplification and single-ended coherent detection technique at an information spectral efficiency of 4.0 bit/s·Hz.

[1]  Jianjun Yu,et al.  High-Spectral-Efficiency 114-Gb/s Transmission Using PolMux-RZ-8PSK Modulation Format and Single-Ended Digital Coherent Detection Technique , 2009, Journal of Lightwave Technology.

[2]  Kuang-Tsan Wu,et al.  Real-time measurements of a 40 Gb/s coherent system. , 2008, Optics express.

[3]  A. Gnauck,et al.  112-Gb/s polarization-multiplexed 16-QAM on a 25-GHz WDM grid , 2008, 2008 34th European Conference on Optical Communication.

[4]  Matthias Seimetz,et al.  Coherent RZ-8PSK transmission at 30 Gbit/s over 1200 km employing homodyne detection with digital carrier phase estimation , 2007 .

[5]  Jianjun Yu,et al.  Transmission of hybrid 112 and 44 Gb/s PolMux-QPSK in 25 GHz channel spacing over 1600 km SSMF employing digital coherent detection and EDFA-only amplification , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[6]  Sethumadhavan Chandrasekhar,et al.  Hybrid 107-Gb/s Polarization-Multiplexed DQPSK and 42.7-Gb/s DQPSK Transmission at 1.4-bits/s/Hz Spectral Efficiency over 1280 km of SSMF and 4 , 2011 .

[7]  S. Jansen,et al.  121.9-Gb/s PDM-OFDM Transmission With 2-b/s/Hz Spectral Efficiency Over 1000 km of SSMF , 2009, Journal of Lightwave Technology.

[8]  Ting Wang,et al.  32Tb/s (320×114Gb/s) PDM-RZ-8QAM transmission over 580km of SMF-28 ultra-low-loss fiber , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[9]  Y. Mori,et al.  Unrepeated 200-km transmission of 40-Gbit/s 16-QAM signals using digital coherent optical receiver , 2008, OECC/ACOFT 2008 - Joint Conference of the Opto-Electronics and Communications Conference and the Australian Conference on Optical Fibre Technology.

[10]  Tetsuya Kawanishi,et al.  10 x 107-Gb/s NRZ-DQPSK Transmission at 1.0 b/s/Hz over 12 x 100 km Including 6 Optical Routing Nodes , 2007, OFC 2007.

[11]  Guifang Li,et al.  Coherent optical communication using polarization multiple-input-multiple-output. , 2005, Optics express.

[12]  D. Godard,et al.  Self-Recovering Equalization and Carrier Tracking in Two-Dimensional Data Communication Systems , 1980, IEEE Trans. Commun..

[13]  Xiang Zhou,et al.  Multi-Level, Multi-Dimensional Coding for High-Speed and High-Spectral-Efficiency Optical Transmission , 2009, Journal of Lightwave Technology.

[14]  M.G. Taylor,et al.  Coherent detection method using DSP for demodulation of signal and subsequent equalization of propagation impairments , 2004, IEEE Photonics Technology Letters.

[15]  Nobuhiko Kikuchi,et al.  Experimental Demonstration of Incoherent Optical Multilevel Staggered-APSK (Amplitude- and Phase-Shift Keying) Signaling , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

[16]  K. Sekine,et al.  Incoherent 32-Level Optical Multilevel Signaling Technologies , 2008, Journal of Lightwave Technology.

[17]  Jianjun Yu,et al.  20×112Gbit/s, 50GHz spaced, PolMux-RZ-QPSK straight-line transmission over 1540km of SSMF employing digital coherent detection and pure EDFA amplification , 2008, 2008 34th European Conference on Optical Communication.

[18]  Yutaka Miyamoto,et al.  20.4-Tb/s (204 × 111 Gb/s) Transmission over 240 km Using Bandwidth-Maximized Hybrid Raman/EDFAs , 2007, OFC 2007.

[19]  K. Kikuchi,et al.  Coherent demodulation of 40-Gbit/s polarization-multiplexed QPSK signals with 16-GHz spacing after 200-km transmission , 2005, OFC/NFOEC Technical Digest. Optical Fiber Communication Conference, 2005..

[20]  S. Haykin,et al.  Adaptive Filter Theory , 1986 .

[21]  David Hanson,et al.  Performance of a 46-Gbps Dual-Polarization QPSK Transceiver in a High-PMD Fiber Transmission Experiment , 2008 .

[22]  A. Gnauck,et al.  25.6-Tb/s C+L-band transmission of polarization-multiplexed RZ-DQPSK signals , 2007, OFC 2007.

[23]  A.H. Gnauck,et al.  Optical phase-shift-keyed transmission , 2005, Journal of Lightwave Technology.

[24]  Andrew J. Viterbi,et al.  Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmission , 1983, IEEE Trans. Inf. Theory.

[25]  D. Hanson,et al.  Performance of a 46-Gbps Dual-Polarization QPSK Transceiver With Real-Time Coherent Equalization Over High PMD Fiber , 2009, Journal of Lightwave Technology.

[26]  Jianjun Yu,et al.  2Tb/s (20×107 Gb/s) RZ-DQPSK straight-line transmission over 1005 km of standard single mode fiber (SSMF) without Raman amplification , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

[27]  Masataka Nakazawa,et al.  Polarization-Multiplexed 1 Gsymbol/s, 64 QAM (12 Gbit/s) Coherent Optical Transmission over 150 km with an Optical Bandwidth of 2 GHz , 2007, OFC 2007.

[28]  Ting Wang,et al.  17 Tb/s (161×114 Gb/s) PolMux-RZ-8PSK transmission over 662 km of ultra-low loss fiber using C-band EDFA amplification and digital coherent detection , 2008, 2008 34th European Conference on Optical Communication.

[29]  William Shieh,et al.  107 Gb/s Coherent Optical OFDM Reception Using Orthogonal Band Multiplexing , 2008 .

[30]  T. Duthel,et al.  10 x 111 Gbit/s 50 GHz spaced, POLMUX-RZ-DQPSK transmission over 2375 km employing coherent equalisation , 2007, OFC 2007.

[31]  Seb J Savory,et al.  Digital filters for coherent optical receivers. , 2008, Optics express.

[32]  Jianjun Yu,et al.  A novel DSP algorithm for improving the performance of digital coherent receiver using single-ended photo detection , 2008, 2008 34th European Conference on Optical Communication.

[33]  A. Leven,et al.  Frequency Estimation in Intradyne Reception , 2007, IEEE Photonics Technology Letters.

[34]  Dayou Qian,et al.  8×114 Gb/s, 25-GHz-spaced, PolMux-RZ-8PSK transmission over 640 km of SSMF employing digital coherent detection and EDFA-only amplification , 2008 .

[35]  B. Spinnler.  Recent advances on polarization multiplexing , 2008, 2008 Digest of the IEEE/LEOS Summer Topical Meetings.

[36]  H. de Waardt,et al.  107-Gb/s full-ETDM transmission over field installed fiber using vestigial sideband modulation , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.

[37]  Matthias Seimetz,et al.  30 Gbit/s RZ-8-PSK Transmission over 2800 km Standard Single Mode Fibre without Inline Dispersion Compensation , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

[38]  John G. Proakis,et al.  Digital Communications , 1983 .

[39]  Keang-Po Ho,et al.  Spectral efficiency limits and modulation/detection techniques for DWDM systems , 2004, IEEE Journal of Selected Topics in Quantum Electronics.

[40]  S.J. Savory,et al.  Compensation of Quadrature Imbalance in an Optical QPSK Coherent Receiver , 2008, IEEE Photonics Technology Letters.

[41]  J. Yu,et al.  Cascaded two-modulus algorithm for blind polarization de-multiplexing of 114-Gb/s PDM-8-QAM optical signals , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[42]  S. Bigo,et al.  Transmission of 16.4-bit/s Capacity Over 2550 km Using PDM QPSK Modulation Format and Coherent Receiver , 2008, Journal of Lightwave Technology.