Large delay tunable slow-light based on high-gain stimulated-Brillouin-scattering amplification in optical fibers  

作　　者：XING Liang ZHAN Li XIA YuXing 

机构地区：[1]Department of Physics, State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao TongUniversity, Shanghai 200240, China

出　　处：《Chinese Science Bulletin》2009年第21期3947-3952,共6页

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 10874118);"SMC Young Star" Scientist Program of Shanghai Jiao Tong University

摘　　要：Tunable stimulated-Brillouin-scattering (SBS)-based slow-light in optical fibers has potential applications in optical buffering in the future all-optical router commutation systems. However, due to the low SBS threshold and relatively high realistic signal power, the gain in the usual SBS systems is limited at^30 dB. This paper presents a high-gain SBS scheme to realize large delay slow-light, which benefits from avoiding the depletion of the pump power in a short fiber as SBS media. The experiment demonstrates that, up to 50 dB non-saturated gain has been observed in the single-stage 591.8 m fiber SBS amplification. The slow-light delay can be obtained 52 ns, and the fractional delay can exceed 1.Tunable stimulated-Brillouin-scattering （SBS）-based slow-light in optical fibers has potential applications in optical buffering in the future all-optical router commutation systems. However, due to the low SBS threshold and relatively high realistic signal power, the gain in the usual SBS systems is limited at -30 dB. This paper presents a high-gain SBS scheme to realize large delay slow-light, which benefits from avoiding the depletion of the pump power in a short fiber as SBS media. The experiment demonstrates that, up to 50 dB non-saturated gain has been observed in the single-stage 591.8 m fiber SBS amplification. The slow-light delay can be obtained 52 ns, and the fractional delay can exceed 1.

关 键 词：布里渊散射 增益放大 延迟 光纤 可调 整流系统 全光路由器 信号功率 

分 类 号：TN721.1[电子电信—电路与系统] O437.2[机械工程—光学工程]