Transmission of multi-polarization-multiplexed signals: another freedom to explore?

We propose a configuration of signal multiplexing with four polarization states, and investigate its transmission performance over single-mode-fiber links. Assisted by coherent detection and digital signal processing (DSP), the demodulation of four-polarization multiplexed (4PM) on-off-keying (OOK) and phase-shift-keying (PSK) signals are achieved. We then discuss the impact of the crosstalk from polarization mode dispersion (PMD) on 4PM systems. The transmission distance is extended from ~50-km to ~80 km by employing feedback-decision-equalizers. We also compare the back-to-back characteristics of the 40-Gbit/s 4PM-OOK system and 40-Gbit/s PDM-QPSK system with the same spectral efficiency. The results show that the performance of 4PM systems is comparable to that of PDM-QPSK systems, which indicates that the proposed scheme is a potentially promising candidate for future optical networks.

[1]  B Zhu,et al.  112-Tb/s space-division multiplexed DWDM transmission with 14-b/s/Hz aggregate spectral efficiency over a 76.8-km seven-core fiber. , 2011, Optics express.

[2]  Reinhold Noe,et al.  Polarization mode dispersion compensation at 10, 20, and 40 Gb/s with various optical equalizers , 1999 .

[3]  I. Morita,et al.  Coherent Optical 25.8-Gb/s OFDM Transmission Over 4160-km SSMF , 2008, Journal of Lightwave Technology.

[4]  E. Ip,et al.  High Capacity/Spectral Efficiency 101.7-Tb/s WDM Transmission Using PDM-128QAM-OFDM Over 165-km SSMF Within C- and L-Bands , 2012, Journal of Lightwave Technology.

[5]  W. Shieh,et al.  Toward the Shannon Limit of Spectral Efficiency , 2011, IEEE Photonics Journal.

[6]  B Zhu,et al.  10 x 112Gb/s PDM-QPSK transmission over 5032 km in few-mode fibers. , 2010, Optics express.

[7]  Bane Vasic,et al.  Orthogonal frequency division multiplexing for high-speed optical transmission. , 2006, Optics express.

[8]  Mark Shtaif,et al.  Performance degradation in coherent polarization multiplexed systems as a result of polarization dependent loss. , 2008, Optics express.

[9]  Sheng Chen,et al.  Adaptive Bayesian equalizer with decision feedback , 1993, IEEE Trans. Signal Process..

[10]  Peter J. Winzer,et al.  Beyond 100G Ethernet , 2010, IEEE Communications Magazine.

[11]  L Nelson,et al.  Coherent crosstalk impairments in polarization multiplexed transmission due to polarization mode dispersion. , 2000, Optics express.

[12]  L. Kazovsky,et al.  Temperature control of the gain spectrum of fiber optical parametric amplifiers. , 2005, Optics express.

[13]  H. Kogelnik,et al.  Observation of PMD-induced coherent crosstalk in polarization-multiplexed transmission , 2001, IEEE Photonics Technology Letters.

[14]  Wei Li,et al.  Transmission and demodulation of multi-polarization-multiplexed signals , 2014 .

[15]  B Zhu,et al.  1.12-Tb/s 32-QAM-OFDM superchannel with 8.6-b/s/Hz intrachannel spectral efficiency and space-division multiplexed transmission with 60-b/s/Hz aggregate spectral efficiency. , 2011, Optics express.

[16]  A. Willner,et al.  Experimental demonstration of the system performance degradation due to the combined effect of polarization-dependent loss with polarization-mode dispersion , 2002, IEEE Photonics Technology Letters.

[17]  T. Duthel,et al.  Coherent Equalization and POLMUX-RZ-DQPSK for Robust 100-GE Transmission , 2008, Journal of Lightwave Technology.

[18]  Gabriella Bosco,et al.  Performance Limits of Nyquist-WDM and CO-OFDM in High-Speed PM-QPSK Systems , 2010, IEEE Photonics Technology Letters.

[19]  U. Gliese,et al.  DPSK 32 x 10 Gb/s transmission modeling on 5 x 90 km terrestrial system , 2000, IEEE Photonics Technology Letters.

[20]  G Kanter,et al.  Electronic equalization for enabling communications at OC-192 rates using OC-48 components. , 2003, Optics express.

[21]  Xiaomin Ren,et al.  PMD and PDL impairments in polarization division multiplexing signals with direct detection. , 2009, Optics express.

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

[23]  José Capmany,et al.  Centralized light-source optical access network based on polarization multiplexing. , 2010, Optics express.

[24]  최종수,et al.  에러 궤환을 이용한 적응 결정 궤한 등화기 ( An Adaptive Decision Feedback Equalizer Using Error Feedback ) , 1995 .

[25]  A. Willner,et al.  Terabit free-space data transmission employing orbital angular momentum multiplexing , 2012, Nature Photonics.

[26]  Ting Wang,et al.  64-Tb/s (640×107-Gb/s) PDM-36QAM transmission over 320km using both pre- and post-transmission digital equalization , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[27]  Gang-Ding Peng,et al.  Mode-division multiplexed transmission with inline few-mode fiber amplifier. , 2012, Optics express.

[28]  R. Egorov,et al.  Architectural tradeoffs for reconfigurable dense wavelength-division multiplexing systems , 2006, IEEE Journal of Selected Topics in Quantum Electronics.

[29]  W. Shieh.  High spectral efficiency coherent optical OFDM for 1 Tb/s Ethernet transport , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[30]  Mark Shtaif,et al.  Stokes-space analysis of modal dispersion in fibers with multiple mode transmission. , 2012, Optics express.

[31]  B. Zhu,et al.  Transmission of a 1.2-Tb/s 24-carrier no-guard-interval coherent OFDM superchannel over 7200-km of ultra-large-area fiber , 2009, 2009 35th European Conference on Optical Communication.