This paper takes modulation technique as main hint, summarizes the essential principle of analogue modulation technology, opticalmodulation 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。
2
The results also show that the performance of this communication system can be affected by background optical, APD gain and modulation extinction ratio.
该通信系统还受背景光、雪崩光电二极管(APD)增益和调制消光比等因素的影响。
3
The principle and experimental results of phase modulationoptical heterodyne detection technique for measuring reflection of optical cavity are described.