频率可调激光器：可调制式激光器也就是脉冲式激光器。

Frequency modulated laser module: Frequency modulated laser module is pulsed laser module.

youdao

可调激光器是WD M光网络系统的理想光源，同时可以用作光分组交换网络结构器件、接入网波长路由器等方面，是当今光通信技术的研究热点之一。

Tunable Laser is an ideal optical source in WDM optical networks. It is important components in optical Packet Switching and it is also used in router of access networks.

youdao

有一些可调的激光器，它能被调整以发出几种不同颜色的光，但每次只能发出一种颜色的光。

There are such things as tunable lasers, which can be adjusted to produce several different colors, but even they can emit only one color at a time.

youdao