Multichannel wavelength multicasting for two QPSK signals based on FWM in SOA  

作　　者：秦军 纪越峰 王宏祥 王丹石 张民 吕国伟 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communication,School of Information and Communication Engineering, Beijing University of Posts and Telecommunications [2]Institute of Innovative Science and Technology, Tokai University

出　　处：《Chinese Optics Letters》2015年第1期10-16,共7页中国光学快报（英文版）

基　　金：supported by the National 863 Program of China(Nos.2012AA011302 and 2011AA010306);the National Natural Science Foundation of China(No.61372118)

摘　　要：We experimentally demonstrate multichannel wavelength multicasting for two nonreturn-to-zero quadrature phase-shift keying （NRZ-QPSK） channels based on four-wave mixing （FWM） in semiconductor optical amplifier （SOA）. Through the interaction with the two pumps in SOA, the input two 25 Gb/s NRZ-QPSK channels are successfully simultaneously multicast to five and two new wavelengths, respectively. All the multicast channels are with a power penalty less than 2.5 dB at a bit error rate （BER） of 10^- 3. A characterization of the system performance using conversion efficiency and BER as figures-of-merit in terms of pump and signal powers is also presented. The results indicate that the pump and signal powers can be optimized to eliminate the introduced deleterious nonlinear components. The wavelengths of the two NRZ-QPSK channels and the two pumps need to be specified to avoid the crosstalk induced by high-order FWM.We experimentally demonstrate multichannel wavelength multicasting for two nonreturn-to-zero quadrature phase-shift keying （NRZ-QPSK） channels based on four-wave mixing （FWM） in semiconductor optical amplifier （SOA）. Through the interaction with the two pumps in SOA, the input two 25 Gb/s NRZ-QPSK channels are successfully simultaneously multicast to five and two new wavelengths, respectively. All the multicast channels are with a power penalty less than 2.5 dB at a bit error rate （BER） of 10^- 3. A characterization of the system performance using conversion efficiency and BER as figures-of-merit in terms of pump and signal powers is also presented. The results indicate that the pump and signal powers can be optimized to eliminate the introduced deleterious nonlinear components. The wavelengths of the two NRZ-QPSK channels and the two pumps need to be specified to avoid the crosstalk induced by high-order FWM.

关 键 词：Bit error rate Four wave mixing Light amplifiers MULTICASTING Phase shift Phase shift keying Phase shifters Semiconductor optical amplifiers 

分 类 号：TN722[电子电信—电路与系统]