Views:0 Author:Site Editor Publish Time: 2021-06-17 Origin:Site
Due to the large loss and small capacity of traditional wire transmission, there are some limitations in the use, which can’t meet the increasing demand for communication in the rapid development of the information age. Optical fiber communication system has been widely used in various fields because of its advantages of large capacity, small channel loss, strong anti-interference and high transmission rate. With the popularization of optical fiber communication systems, it is necessary to have a new optical receiver to match it.
Here is the content list:
What are the main components of the outdoor optical receiver?
Why can outdoor optical receivers be widely used?
What are the main applications of outdoor optical receivers?
The optical receiver is a machine that receives the optical signal transmitted from the optical fiber and converts it into an electrical signal for amplification. Because the optical signal in the optical fiber is very weak, the electrical signal converted by the optical detector is very small, and the noise in the optical receiver will have a great impact on the optical receiver and even the whole optical fiber communication system. Therefore, the noise in the optical receiver should be as small as possible to ensure that the sensitivity of the optical receiver is high enough, and the optical fiber communication system can work normally. Each module in the system architecture of the optical receiver mainly includes an optical detector, preamplifier, main amplifier, clock recovery circuit, data decision circuit, tap changer, etc. The optical detector converts the optical signal in the optical fiber into an electrical signal. The preamplifier converts the current signal from the optical detector into a voltage signal and amplifies it. The main amplifier further amplifies the voltage signal from the preamplifier to a constant amplitude and then transmits it to the subsequent digital circuit.
Optical receiver is widely used because of its small size, low power consumption, low optical power reception, high sensitivity and high output performance. And the optical receiver greatly improves the receiving sensitivity of the optical receiver by setting the photodetector with wavelength division multiplexer in the photoelectric conversion circuit and the integrated RF amplifier chip in the preamplifier circuit. Even under the condition of very low receiving optical power, the RF output of the optical receiver still has a good signal-to-noise ratio.
As far as the outdoor optical receiver is concerned, it can not only fully adapt to the use conditions of indoor environment, but also be used in buildings, communities or villages where users are concentrated, high-level multi output distribution network, inconvenient power on and single device driving many users' outdoor environment.
The Outdoor optical receiver is mainly used in buildings, communities or villages where users are concentrated, and high-level multi output distribution networks. It is also suitable for use in places where it is not convenient to power on and a single device drives many users. If it is used in FTTB, FTTN, FTTC network, it can realize the analog and digital signals to users. At the same time, it is also widely used in all kinds of cable TV systems, two-way cable TV modem, CATV system, satellite TV system, closed-circuit TV in residential area, CCTV monitoring system in residential area, audio-visual system in hotels, audio-visual system in military units, schools and other educational audio-visual systems. The outdoor optical receiver can also realize network integration with ONU or EOC.
Based on the research progress at home and abroad, it can be found that the optical receiver circuit is developing in the direction of higher speed, larger bandwidth, lower noise and lower power consumption. Hengchi Electronic Equipment Co., Ltd. has more than 14 years of experience in the design of complex optical fiber and electronic circuits, and the outdoor optical receiver designed and manufactured by us is also well received. If you are full of confidence in the development prospect of the outdoor optical receiver, or are engaged in outdoor optical receiver related industries, you can consider our high-quality products.