5 October 2012 Impact of filter shape and bandwidth on terabit polarization-multiplexed quadrature phase-shift keying transmission with baud-rate spacing
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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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Xiaogang Yi, Xiaogang Yi, Yan Li, Yan Li, Jian Wu, Jian Wu, Wei Li, Wei Li, Xiaobin Hong, Xiaobin Hong, Hongxiang Guo, Hongxiang Guo, Yong Zuo, Yong Zuo, Jintong Lin, 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 . Submission:
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