Views:0 Author:Site Editor Publish Time: 2021-07-27 Origin:Site
In recent years, with the rapid development of optical fiber communication, it has gradually become the main way for people to exchange data and information. Optical fiber communication has the advantages of large capacity, high bandwidth, low loss, and it is growing exponentially because of the amount of data and information transmitted by the Internet. Therefore, the traditional way of electrical interconnection is not suitable for the transmission of long-distance, large capacity signals, instead of a high-speed optical fiber connection. As an important component of a high-speed optical fiber communication system, the optical receiver has been developed rapidly and diversely.
Here is the content list:
What is the fiction of optical amplifier in optical fiber system?
How are optical receivers classified?
What are the advantages of outdoor optical receivers?
The optical receiver is one of the three major components of an optical fiber communication system, and its output characteristics comprehensively reflect the performance of the whole optical fiber communication system. The function of the optical receiver is to restore the weak optical pulse signal transmitted from the optical fiber line to the electrical signal before transmission after correction, amplification, and conversion with the least additional noise and distortion, and then send it to the electrical receiver. After the optical signal transmitted by the optical transmitter is transmitted, not only the amplitude is attenuated, but also the pulse waveform is broadened.
According to the type of modulation signal, the optical receiver can be divided into an analog optical receiver and a digital optical receiver. The modulation signal of the analog optical receiver is an analog signal, which has the characteristics of simple equipment, and is usually used to transmit video signal in radio and television system. The modulation signal of digital optical receiver is digital signal, and digital optical fiber communication system has the advantages of high communication quality and long transmission distance, so it has been widely used.
Generally speaking, detectors for optical fiber communication need low dark current, high responsivity and cutoff frequency. At present, the commonly used detector structures are pin, APD and MSM. Therefore, we divide the optical receiver into PIN-HBT, MSM-HEMT, PIN-FET and PIN-HEMT according to its optoelectronic integration mode.
According to different classification methods, optical receivers can be divided into other types. For example, according to the transmission rate, the optical receiver can be divided into low speed, medium speed and high speed optical receiver; according to the application scope, the optical receiver can be divided into general optical receiver and special optical receiver; in addition, there are wireless communication optical receiver, satellite communication optical receiver, CATV optical receiver, etc.
Compared with the indoor optical receiver, the outdoor optical receiver is better in waterproof and sunscreen. Because it is located in buildings, communities or villages where users are concentrated, outdoor optical receivers are exposed to the external environment for a lot of time, and are more likely to encounter some extreme weather such as rainstorm and sun exposure. Therefore, the outdoor optical receiver is excellent in waterproof and sunscreen, and its waterproof level is very high.
Another advantage of outdoor optical receiver is low noise. In the space optical communication system, because the signal received by the optical receiver is very weak, coupled with the interference of high background noise field, the minimum additional noise of outdoor optical receiver is particularly important.
In addition, the outdoor optical receiver has the advantages of high sensitivity, fast response and high reliability. Because the optical receiver is usually used in long-distance and large capacity optical fiber communication, the optical signal received by the optical receiver from the optical transmitter is particularly weak. At this time, the sensitivity, response speed and reliability of the outdoor optical receiver are very important. If the performance of the optical receiver can not meet the standard, the long-distance optical fiber communication can not be well realized, and it is difficult to popularize.
Due to the development of high-speed and high-capacity optical fiber communication and the demand for high-speed and high-performance devices, people focus on the research of optical receiver module, and have made some progress in the material growth, preparation of high-speed and low-noise devices, integrated circuit technology, optoelectronic coupling and application of various circuit technologies. The outdoor optical receiver produced by hengchi Electronic Equipment Co., Ltd. fully meets the industry standard, and has excellent in band flatness, which ensures the performance index of the product. If you are engaged in outdoor optical receiver-related business or interested in the outdoor optical receiver, you can consider our reliable products.