Title :
Multi-wavelength in-band OSNR monitoring based on Lyot-Sagnac interferometer
Author :
Na An ; Jifang Qiu ; Zhuili Huang ; Bo Yuan ; Deming Kong ; Jian Wu
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
An in-band OSNR monitor based on Lyot-Sagnac interferometer is experimentally demonstrated for 4×40GBaud NRZ-QPSK WDM signal without requirement for prior knowledge of the noise-free coherence properties of the signal. OSNR from 7.5~25dB was realized.
Keywords :
Sagnac interferometers; light coherence; quadrature phase shift keying; wavelength division multiplexing; Lyot-Sagnac interferometer; NRZ-QPSK WDM signal; in-band OSNR monitoring; noise-free coherence; quadrature phase shift keying; wavelength division multiplexing; Decision support systems; Degradation; Fiber nonlinear optics; Monitoring; Optical interferometry; Optical noise; Signal to noise ratio;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2015
Conference_Location :
Los Angeles, CA
