Transmission and test system for signal-wavelength 3Gbps space high-speed light

Abstract

The invention discloses a transmission and test system for signal-wavelength 3Gbps space high-speed light. The system comprises an emitting end, a receiving end and double bidimensional adjustable overlaying light parallel adjusting devices for beacon light and signal light. The system is high in speed and safe, can be in seamless butted joint with the conventional optical fiber net and can be used for the condition that the high speed data transmission is required but an optical fiber system is difficult to pave, or can be used among area networks with high speed data rates, particularly be used among buildings, communication base stations, as well as between an aircraft and the ground, between an aircraft and an aircraft and among fighting units needing of fast networking; and be used for temporary interlinkage of disaster rescue.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and relates to an optical transmission and testing system, in particular to a single-wavelength 3Gbps space high-speed optical transmission and testing system. Background technique [0002] Space high-speed optical transmission has the following points: 1. Large communication capacity; 2. Free frequency; 3. Easy installation and strong flexibility; 4. Good bit error performance and strong anti-interference; It costs a lot of money to rent dedicated lines and lay optical fibers; 6. The communication quality is good, and it is a local loop technology; 7. The carrier-level communication quality is sufficient to meet the various requirements of enterprise network applications; 8. No visible laser Instead, infrared light is used as the transmission medium. When the transceiver is installed between buildings, it will not affect people's normal work and life. 9. The signal power of the co...

AI Technical Summary

Problems solved by technology

[0007] 1) The transmission rate is low, and it cannot be directly connected to the high-speed communication network: the use of radio communication has gradually shown that it cannot meet the speed of people's demand for information. Most of the developed FSO products are basically based on direct detection by detectors. The rate is limited by the bandwidth of the detector and the optical coupling efficiency, so it cannot be directly connected to the high-speed backbone network

[0008] 2) The wireless network needs to apply for a license: the radio management department needs to apply for a license, and a large spectrum occupation fee needs to be paid, and it may interfere or receive interference from other wireless devices

[0009] 3) Low availability: due to the immature technology for solving channel interference and coupling problems, the communication efficiency is greatly affected by the channel environment, the accuracy of the tracking and aiming system is limited, and the low coupling efficiency of the transmitting and receiving antennas causes the communication quality to affect the environment. Sensitive, so 24 / 7 available with reduced efficiency

[0010] 4) Large power loss: For wireless networks, due to the wide coverage of radio waves and large divergence angles, the requirements for transmission power are high, so the power consumption is large

[0011] 5) Poor confidentiality of local area network: At present, the local area network mainly adopts wireless network and coaxial cable transmission. High local area network, which is very fatal, and the pursuit of high confidentiality of the local area network has always been one of the research directions of the local area network

[0012] High overall cost: For wireless communication or optical cable, it is necessary to lease dedicated lines or lay optical cables; for reception, the radio system requires a series of active equipment

Images