An external modulation laser technology of electro-optical modulation technique has been widely used because of its advantages which can not be got by others.
其中光外调制技术中的铌酸锂电光调制技术因其具有其它调制方式所不及的优点而被广泛应用。
This paper takes modulation technique as main hint, summarizes the essential principle of analogue modulation technology, optical modulation and digital modulation technology.
以调制技术为主线，介绍有线电视系统中模拟调制技术、光调制技术和数字调制技术的基本原理。
The principle and experimental results of phase modulation optical heterodyne detection technique for measuring reflection of optical cavity are described.
本文叙述了用位相调制光外差技术探测光学谐振腔反射特性的原理及实验结果。
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