Super-Nyquist shaping and processing technologies for high-spectral-efficiency optical systems

Zhensheng Jia; Hung-Chang Chien; Junwen Zhang; Ze Dong; Yi Cai; Jianjun Yu

doi:10.1117/12.2044294

1 February 2014 Super-Nyquist shaping and processing technologies for high-spectral-efficiency optical systems

Zhensheng Jia, Hung-Chang Chien, Junwen Zhang, Ze Dong, Yi Cai, Jianjun Yu

Proceedings Volume 9009, Next-Generation Optical Communication: Components, Sub-Systems, and Systems III; 90090J (2014) https://doi.org/10.1117/12.2044294
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

The implementations of super-Nyquist pulse generation, both in a digital field using a digital-to-analog converter (DAC) or an optical filter at transmitter side, are introduced. Three corresponding signal processing algorithms at receiver are presented and compared for high spectral-efficiency (SE) optical systems employing the spectral prefiltering. Those algorithms are designed for the mitigation towards inter-symbol-interference (ISI) and inter-channel-interference (ICI) impairments by the bandwidth constraint, including 1-tap constant modulus algorithm (CMA) and 3-tap maximum likelihood sequence estimation (MLSE), regular CMA and digital filter with 2-tap MLSE, and constant multi-modulus algorithm (CMMA) with 2-tap MLSE. The principles and prefiltering tolerance are given through numerical and experimental results.

Citation Download Citation

Zhensheng Jia, Hung-Chang Chien, Junwen Zhang, Ze Dong, Yi Cai, and Jianjun Yu "Super-Nyquist shaping and processing technologies for high-spectral-efficiency optical systems", Proc. SPIE 9009, Next-Generation Optical Communication: Components, Sub-Systems, and Systems III, 90090J (1 February 2014); https://doi.org/10.1117/12.2044294

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