用半导体激光器作调制器的双波长可调谐锁模光纤激光器  

Wavelength Tunable Dual-Wavelength Actively Mode-Locked Fiber Laser with F-P LD as Modulator

作　　者：杨石泉[1] 李朝晖[1] 项阳[1] 张昊[1] 袁树忠[1] 董孝义[1] 

机构地区：[1]南开大学现代光学研究所,天津300071

出　　处：《光学学报》2003年第4期472-475,共4页Acta Optica Sinica

基　　金：国家自然科学基金 ( 6 0 1370 10 )资助课题。

摘　　要：提出一种用法布里珀罗腔半导体激光器 (F PLD)作调制器 ,用线性啁啾光栅 (LCFG)进行波长选择的双波长环形腔主动锁模光纤激光器。利用线性啁啾光栅在腔内的色散效应使两个波长的光脉冲通过铒光纤 (EDF)时在时域上分开 ,从而减小了不同波长的光脉冲同时通过铒光纤时造成的竞争 ,因此可以在室温下获得波长间隔较小的稳定的双波长光脉冲输出。实验中成功地获得了重复频率约为 2GHz ,波长间隔为 0 .92nm的稳定双波长光脉冲 ,并通过调谐线性啁啾光栅中心波长的位置使激光波长可以在约 3nm范围内调谐。A novel actively mode-locked fiber laser for generating dual-wavelength picosecond pulses was proposed by using an F-P LD as the modulator in the ring cavity. A linear chirped fiber grating (LCFG) was used as wavelength selector and to produce temporal-spectral multiplexing of the pulses in the gain medium to reduce cross-saturation effects. Stable dual-wavelength pulses with a wavelength spacing of 0.92 nm at the room temperature were experimentally demonstrated and the wavelengths could be tuned in a range of about 3 nm.

关 键 词：半导体激光器 调制器 双波长可调谐锁模光纤激光器 啁啾光栅 光纤通信 

分 类 号：TN242[电子电信—物理电子学] TN929.11