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 +

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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