Title :
OSNR monitoring for PM-QPSK systems in presence of fiber nonlinearities for digital coherent receivers
Author :
Dong, Zhenhua ; Lau, Alan Pak Tao ; Lu, Chao
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, China
Abstract :
We propose OSNR monitoring for PM-QPSK systems in presence of fiber nonlinearities by characterizing the nonlinearity-induced amplitude noise correlation among neighboring symbols and incorporating it into a typical OSNR estimator based on received signal distributions.
Keywords :
nonlinear optics; optical correlation; optical fibre communication; optical receivers; quadrature phase shift keying; OSNR estimator; OSNR monitoring; PM-QPSK systems; digital coherent receivers; fiber nonlinearities; nonlinearity-induced amplitude noise correlation; quadrature phase shift keying; received signal distributions; Calibration; Nonlinear distortion; Optical fiber amplifiers; Optical fiber communication; Optical noise; Signal to noise ratio;
Conference_Titel :
Opto-Electronics and Communications Conference (OECC), 2012 17th
Conference_Location :
Busan
Print_ISBN :
978-1-4673-0976-9
Electronic_ISBN :
2166-8884
DOI :
10.1109/OECC.2012.6276618
