Impact of filter shape and bandwidth on terabit polarization-multiplexed quadrature phase-shift keying transmission with baud-rate spacing

Xiaogang Yi; Yan Li; Jian Wu; Wei Li; Xiaobin Hong; Hongxiang Guo; Yong Zuo; Jintong Lin

doi:10.1117/1.OE.51.10.105005

5 October 2012 Impact of filter shape and bandwidth on terabit polarization-multiplexed quadrature phase-shift keying transmission with baud-rate spacing

Xiaogang Yi, Yan Li, Jian Wu, Wei Li, Xiaobin Hong, Hongxiang Guo, Yong Zuo, Jintong Lin

Author Affiliations +

Funded by: National High Technology Research and Development Program of China, 863 Program, NSFC, NSFC Program, National Natural Science Foundation of China, 973 Program, Central Universities

Optical Engineering, Vol. 51, Issue 10, 105005 (October 2012). https://doi.org/10.1117/1.OE.51.10.105005

Abstract

The impact of the optical multiplexing/demultiplexing filter on ultradense wavelength-division multiplexing transmission based on polarization-multiplexed quadrature phase-shift keying (PM-QPSK) modulation at the Nyquist spectral efficiency limit is studied through simulations. We analyze 10×111 Gbit/s PM-QPSK systems with baud-rate channel spacing for both back-to-back and long-haul nonlinear transmission cases. We show that, although a higher-order filter generally leads to better system performance at the optimal filter bandwidth, this benefit comes at the cost of reduced tolerance to variations in filter bandwidth and center-frequency shifts.

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Xiaogang Yi, Yan Li, Jian Wu, Wei Li, Xiaobin Hong, Hongxiang Guo, Yong Zuo, and Jintong Lin "Impact of filter shape and bandwidth on terabit polarization-multiplexed quadrature phase-shift keying transmission with baud-rate spacing," Optical Engineering 51(10), 105005 (5 October 2012). https://doi.org/10.1117/1.OE.51.10.105005

Published: 5 October 2012

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