All-optical clock recovery of variable bit-rate non-return-to-zero differental phase shift keying signal

被引：0
|
作者：
Liu, Guodong [1 ,2 ]
Wu, Chongqing [1 ,2 ]
Wang, Fu [1 ,2 ]
Sun, Zhenchao [1 ,2 ]
Mao, Yaya [1 ,2 ]
机构：
[1] Institute of Optical Information, Beijing Jiaotong University, Beijing,100044, China
[2] Key Laboratory of Luminescence and Optical Information Technology, Ministry of Education, Beijing Jiaotong University, Beijing,100044, China
来源：
Zhongguo Jiguang/Chinese Journal of Lasers | 2014年 / 41卷 / 11期
关键词：
All-optical; 3R; (reampifying; retiming; reshaping) technique is the trend of the all-optical communication network and all-optical clock recovery is one of the key techniques of all-optical 3R technique. With the application of new phase modulation format; the research of all-optical clock recovery of new phase modulation format is attracting more and more attention. A new scheme of clock recovery of variable bit-rate non-return-to-zero differential phase shift keying (NRZ-DPSK) signal based on tunable demodulator is proposed. The tunable demodulator composed by Fizeau interferometer based on free space light converts the NRZ-DPSK signal into return-to-zero (RZ) signal which includes clock component. The demodulator can demodulate 2.5 Gb/s to 40 Gb/s NRZ-DSPK signal. The demodulated RZ signal is injected into the fiber loop laser and all-optical clock recovery from the length of 27-1 pseudo-random bit sequence (PRBS) NRZ-DPSK signal is realized. The extinction rate of the recovered clock is higher than 10 dB. ©; 2014; Science Press. All right reserved;
D O I：
10.3788/CJL201441.1105010
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