增益开关半导体激光器在外光注入下脉冲抖动的实验研究

Experimental study on the timing jitter of gain-switched laser diodes with photon injection

采用增益开关半导体激光器作为注入种子光源来降低另一个增益开关DFB或Fabry Perot(FP)半导体激光器的脉冲抖动 .相位噪声测量技术表明 :增益开关FP激光器在外部脉冲光注入下 ,激光脉冲抖动 (均方值 )由 1 2ps降低至 830fs;增益开关DFB半导体激光器在外脉冲注入下 ,脉冲抖动由 12ps降低至 1 8ps .

A gain-switched laser diode ( LD) was used as an external pulse injection source to reduce the timing jitter of gain-switched Fabry-Perot and DFB LDs. The low jitter and frequency-independent optical pulse can be achieved using this technique. Phase noise measurement shows that with external pulse injection, the timing jitter of gain-switched FP LD was reduced from 1.2ps to 830fs and the timing jitter of gain-switched DFB was reduced from 12ps to 1.2ps.