Investigation of interchannel nonlinear tolerance of 256-Gb/s polarization-division multiplexing return-to-zero 16-ary quadrature amplitude modulation in a hybrid wavelength-division multiplexing transmission system using optical comb

Feng Tian; Xiaoguang Zhang; Lixia Xi; Andrew J. Stark; Stephen E. Ralph; Gee-Kung Chang

doi:10.1117/1.OE.53.1.016111

20 January 2014 Investigation of interchannel nonlinear tolerance of 256-Gb/s polarization-division multiplexing return-to-zero 16-ary quadrature amplitude modulation in a hybrid wavelength-division multiplexing transmission system using optical comb

Feng Tian, Xiaoguang Zhang, Lixia Xi, Andrew J. Stark, Stephen E. Ralph, Gee-Kung Chang

Author Affiliations +

Optical Engineering, Vol. 53, Issue 1, 016111 (January 2014). https://doi.org/10.1117/1.OE.53.1.016111

Abstract

By applying recirculating frequency shifter technology to generate optical comb as neighboring channels, we have experimentally investigated the interchannel nonlinear tolerance of 256-Gbit/s polarization-division multiplexing return-to-zero 16-ary quadrature amplitude modulation (PDM-RZ-16QAM) in a co-propagation with 32-Gbaud on-off keying, binary phase-shift keying, quadrature phase-shift keying (QPSK) signals in 792-km large-area fiber transmission system. The results show that the experimental back-to-back optical signal-to-noise ratio requirement of 256-Gbit/s (32-GBaud) PDM-RZ-16QAM signal is shifted by 4.8-dB penalty in comparison with the theoretical limits. The cross-phase modulation (XPM) tolerance for 256-Gbit/s PDM-RZ-16QAM in 32-Gbaud phase-modulated neighboring channels is better than in 32-Gbaud intensity-modulated neighbors. Moreover, the performance of XPM tolerance for 256-Gbit/s PDM-RZ-16QAM in 32-Gbaud QPSK neighboring channels is the best among other kinds of modulation neighboring formats.

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Feng Tian, Xiaoguang Zhang, Lixia Xi, Andrew J. Stark, Stephen E. Ralph, and Gee-Kung Chang "Investigation of interchannel nonlinear tolerance of 256-Gb/s polarization-division multiplexing return-to-zero 16-ary quadrature amplitude modulation in a hybrid wavelength-division multiplexing transmission system using optical comb," Optical Engineering 53(1), 016111 (20 January 2014). https://doi.org/10.1117/1.OE.53.1.016111

Published: 20 January 2014

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