Title :
Low-cost in-band OSNR monitoring based on coherent hybrid in CO-OFDM system
Author :
Liangjun Zhang ; Ming Tang ; Zhenhua Feng ; Ruoxu Wang ; Rui Lin ; Liang Xu ; Xiaolong Wang ; Cong Zhou ; Jiadi Wu ; Shiwei Zhou ; Lei Deng ; Songnian Fu ; Deming Liu ; Shum, Perry Ping
Author_Institution :
Sch. of Opt. & Electron. Inf., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
We proposed and demonstrated a cost-effective in-band optical signal to noise ratio (OSNR) monitoring technique based on coherent hybrid in 20Gb/s CO-OFDM system. Less than 0.5dB monitoring error is achieved with 400MHz balanced photodetector (PD).
Keywords :
OFDM modulation; optical communication equipment; photodetectors; CO-OFDM system; balanced photodetector; bit rate 20 Gbit/s; coherent hybrid; frequency 400 MHz; in-band optical signal to noise ratio monitoring technique; low-cost in-band OSNR monitoring; monitoring error; Adaptive optics; Monitoring; OFDM; Optical noise; Optical polarization; Optical receivers; Signal to noise ratio;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
