Firstly, we find that NOLM has a function of compressing optical pulse width, self-phase modulation (SPM) in NOLMs is a crucial reason.
通过研究它的光学特性，我们发现，由于自相位调制(SPM)，NOLM有压缩光脉冲脉宽的功能。
The main results obtained are as follows:1. The ultra-fast characteristics of photoconductive switches were mainly determined by the optical pulse width and the carrier lifetime of the chip material.
光电导开关的超快特性主要由触发光脉冲脉宽和开关芯片材料载流子复合寿命决定。
Nowadays, the optical pulse used in the OTDM system is often generated by the gain-switched distributed-feedback (GS-DFB) semiconductor laser, which has a large pulse width and negative chirp.
目前常采用GS-DFB半导体激光器作为OTDM系统的光脉冲源，这种脉冲源产生的光脉冲一般较宽。
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