The spectrum form of square-wave controlled laser, optical signal heterodyne detecting device and principle of electrical signal demodulation are considered with emphasis.
文中着重分析了方波控制激光器的频谱形式、光信号外差探测装置和电信号解调原理。
It is proved by experiment that using the optical device may be used instead of the fractional wave plates of classical optics.
实验证明，采用本文设计的调节系统完全可以取代经典波片，从而实现单模光纤中传输光束偏振态的自调效果。
Transmitter is the device which changes electrical pulse signal into optical pulse signal, and then transmit the optical signal in wave form by laser diode or light-emitting diode.
光发射机的功能是将电脉冲信号转换成光脉冲信号，并以数字光纤通信系统传输性能所要求的光脉冲信号波形从光源器件的尾纤发射出去。
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