1 State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China; 2 Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 3 University of Chinese Academy of Sciences, Beijing 100049, China
Abstract We propose a novel scheme of simultaneous polarization separation and switching, based on the orthogonally-polarized four-wave mixing (FWM) effect, for ultra-high-speed polarization multiplexing (Pol-MUX) fiber networks such as 100-Gbps and 400-Gbps backbone networks. We use theoretical and experimental analysis of the vector theory of FWM to successfully achieve polarization separation and all-optical switching by utilizing a 100-Gbps dual polarization-quadrature phase shift keying (DP-QPSK) signal and two orthogonally-polarized pumps. Both of the polarization-separated QPSK signals have clear constellation diagrams, with root mean square (RMS) error vector magnitudes (EVMs) of 14.32% and 14.11% respectively. The wavelengths of idlers can be created at 30 different wavelengths, which are consistent with International Telecommunication Union-Telecommunication (ITU-T) wavelengths, by flexibly changing the wavelength of the pump light. Moreover, the idlers that have distinct wavelengths have power distributed in a range from -10 dBm to -15 dBm, which can support error-free transmission. The power penaltyis 5 dB lower than that of back-to-back (BTB) signal for both the X- and Y-polarization components measured at a bit error ratio (BER) of 3.8×10-3. Our experimental results indicate that this scheme has promising applications in future backbone networks.
(Optical communication systems, multiplexers, and demultiplexers?)
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFC0803900) and the National Natural Science Foundation of China (Grant No. 9163801).
Tunable microwave signal generation based on an Opto-DMD processor and a photonic crystal fiber Wang Tao (王涛), Sang Xin-Zhu (桑新柱), Yan Bin-Bin (颜玢玢), Ai Qi (艾琪), Li Yan (李妍), Chen Xiao (陈笑), Zhang Ying (张颖), Chen Gen-Xiang (陈根祥), Song Fei-Jun (宋菲君), Zhang Xia (张霞), Wang Kui-Ru (王葵如), Yuan Jin-Hui (苑金辉), Yu Chong-Xiu (余重秀), Xiao Feng (肖峰), Alameh Kamal. Chin. Phys. B, 2014, 23(6): 064217.
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