What is the function of the optical multiplexer

Time : Jul. 06, 2022    View : 63

Optical multiplexer, many people have never heard of it, and some of those who have heard it do not know what it is. In fact, optical multiplexer are terminal equipment for optical signal transmission. Simply put, an optical multiplexer is a signal converter, one at the beginning and one at the end. The starting end converts the electrical signal into an optical signal, and the terminal converts the optical signal into an electrical signal, which is an optical multiplexer. Therefore, three parts are produced here: the starting end (optical transmitter), the transmission medium, and the terminal (optical receiver). However, the optical multiplexer performs signal conversion so frequently, what is its role?


As we all know, light travels the fastest. Such high-intensity transmission efficiency will ensure the effectiveness and timeliness of some of our work, such as video surveillance. Ordinary signals cannot carry the rapid transmission of big data, and real-time surveillance video must ensure the timely, smooth and high-definition picture. However, neither the camera nor the computer monitor can directly generate or receive optical signals, so the application value of the optical multiplexer is reflected.


It is worth mentioning that optical multiplexer are divided into analog optical multiplexer and digital optical multiplexer, which are collectively called video optical multiplexer.


The analog optical multiplexer needs to perform amplitude or frequency modulation on the signal to convert the electrical signal into an optical signal. When the optical signal is received at the terminal, it needs to be demodulated to restore the data and image information.


Digital optical multiplexer use numbers like 0, 1 to digitize data, images, etc., compile them into multi-channel low-speed signals, then convert them into optical signals, restore the optical signals to multi-channel low-speed signals at the terminal, and finally convert them into video , images, data, etc.