A Simulation System of Ring Optical Fiber Transmission Based on Distributed Feedback Laser

Abstract

The invention discloses a ring optical fiber transmission simulation system based on a distributed feedback laser, which comprises a signal source, a distributed feedback laser, a plurality of groupsof long-distance optical fiber links, an acousto-optic modulator, a radio frequency signal source, a plurality of annulators, a plurality of erbium doped optical fiber amplifiers, a band pass filter,a photoelectric detector and a digital processing module. Each module of the system of the invention is an integrated processing circuit, each module is integrated in a device, the structure is simple, the use is convenient, the size is small, and the cost is low. The system can be used to solve a series of problems such as environment noise, amplifier phase noise, error analysis, error cause, amplifier phase noise and so on in the long-distance optical fiber transmission technology.

Description

technical field [0001] The invention relates to long-distance optical fiber frequency transmission technology and distributed feedback laser technology, in particular to a ring optical fiber transmission simulation system based on distributed feedback laser. Background technique [0002] Long-distance optical fiber transmission technology is a relatively advanced technology at home and abroad. It can effectively avoid interference, reduce noise, and maximize communication performance. In long-distance optical fiber transmission, there are environmental noise effects and phase noise caused by amplifiers, and the transmission stability will be reduced, resulting in errors in the transmission process. In view of environmental noise, amplifier phase noise, error analysis, cause of error, phase noise caused by amplifier, etc. in the process of long-distance optical fiber transmission, it is still difficult to accurately analyze the cause of error and quantitatively analyze the f...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a ring optical fiber transmission simulation system based on distributed feedback lasers, which is used to solve the environmental noise, amplifier phase noise, error analysis, cause of error, and phase noise caused by the amplifier in the existing long-distance optical fiber transmission technology. Simulation and analysis of a series of problems, the system has simple structure, low cost and excellent performance

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