Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.852087
Title: ADC bandwidth optimization in coherent optical polarization multiplexing quadrature phase-shift keying system
Authors: Zhang, S.
Chen, J.
Yu, C. 
Rong, W.
Kam, P.Y. 
Keywords: Analog-to-digital converter
Bandwidth optimization
Bit resolution
Coherent optical communication
Phase modulation
Polarization multiplexing
Issue Date: 2009
Source: Zhang, S.,Chen, J.,Yu, C.,Rong, W.,Kam, P.Y. (2009). ADC bandwidth optimization in coherent optical polarization multiplexing quadrature phase-shift keying system. Proceedings of SPIE - The International Society for Optical Engineering 7632 : -. ScholarBank@NUS Repository. https://doi.org/10.1117/12.852087
Abstract: Numerical simulations were conducted to study the performance of a 112Gbit/s coherent polarization multiplexing (PolMux) quadrature phase-shift keying (QPSK) system. We addressed the bit resolution, bandwidth of analog-to-digital converters (ADC) in the presence of all chromatic dispersion, polarization- mode dispersion and imperfect laser frequency offset. Both return-to-zero (RZ) and non-return-to-zero (NRZ) QPSK waveforms are taken into account, while the filter type of ADC is assumed to have a Gaussian frequency response. An ADC with 6-bit resolution is found to be sufficient for 112Gbit/s PolMux QPSK transmission. And simulation results show that the ratio of optimum bandwidth of ADC to symbol rate is 0.5 for both RZ- and NRZ-QPSK formats when the lst-order Gaussian frequency response of ADCs is assumed. © 2009 SPIE-OSA-IEEE.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/69236
ISBN: 9780819480347
ISSN: 0277786X
DOI: 10.1117/12.852087
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