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Optikai adó-vevő

IDŐ: 2019-06-20 HITS: 34

Optical transceivers, many people have never heard of it, that is, some people who have heard it do not know what it is. In fact, the optical transceiver is the terminal equipment for optical signal transmission. Simply put, the optical transceiver is a signal converter, which is configured at the start end and the terminal. The initial end converts the electrical signal into an optical signal, and the terminal converts the optical signal into an electrical signal, which is the optical transceiver. So here are three parts: the starting end (optical transmitter), the transmission medium, and the terminal (optical receiver). However, the optical transceiver performs such frequent signal conversion. What is its function?

As we all know, the speed of light propagation is the fastest. This 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 spread of big data, and real-time monitoring of video must ensure that the picture is timely and smooth, resulting in high definition. However, neither the camera nor the computer monitor can directly generate or receive optical signals, so the application value of the optical transceiver is reflected.

It is worth mentioning that the optical transceiver is divided into analog optical transceivers and digital optical transceivers, which are also called video optical transceivers.

The analog optical transceiver needs to perform amplitude or frequency modulation on the signal to convert the electrical signal into an optical signal, and receives the optical signal at the terminal, and also needs to perform demodulation to restore the data and image information.

The digital optical transceiver uses a number similar to 0, 1 to digitally process the data, images, etc., compiles into multiple low-speed signals, and then converts them into optical signals, and restores the optical signals to multiple low-speed signals at the terminal, and finally converts them into video. , images, data, etc.

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