10GHz超连续脉冲光子源的实验研究  

Experimental Studies on Supercontinuum Pulse Source with 10 GHz Repetition Rate

作　　者：贾东方[1] 丁永奎[1] 胡智勇[1] 王肇颖[1] 刘俭辉[1] 李世忱[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院

出　　处：《光电子．激光》2005年第7期783-787,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(69877012);教育部博士点基金资助项目(1999005615)

摘　　要：利用增益开关(GS)DFB半导体激光器(LD)作初始抽运源,在4.2km左右的普通色散位移光纤(DSF)中获得了10GHz、120nm以上的超连续(SC)谱脉冲。实验研究了抽运光脉冲峰值功率和光纤零色散波长对SC谱宽度的影响,同时还利用0.4nm带宽的可调谐滤波器对从SC谱中滤出脉冲的特性进行了研究。Utilizing a gain-switched DFB laser as original pumping source, and a dispersion-shifted fiber as the nonlinear material, an ultra-short pulse source with supercontinuum up to 120 nm at repetition rate of 10 GHz was obtained by a variety of nonlinear effects in the fiber. At the same time, the influences of peak powers of pumping pulse and zero dispersion wavelength of fiber on bandwidth of supercontinuum spectrum were experimental investigated. The ultra-short pulses with pulse-width of 9.2-9.6 ps and time-bandwidth product of 0.46-0.48 were filtered out from the SC source at different wavelength by applying tunable filter with 0.4 nm bandwidth. Both the autocorrelation trace and the spectrum of the filtered pulse are smooth, which means the SC source is quite stable.

关 键 词：超连续(SC) 增益开关半导体激光器(GSLD) 光脉冲压缩 色散位移光纤(DSF) 

分 类 号：TN253[电子电信—物理电子学]