Research On High Power Remote Pump Transmission System

The 21 st century is an era of rapid information transmission.Fifth generation technology of mobile communication network is becoming increasingly mature and has begun to be applied in business and industry.High-capacity,long-distance communication transmission technology is the core technology of optical fiber communication system research.The remote unrepeated transmission system does not need to build the relay station of electric energy supply,which can reduce the working environment requirement of the ultra long span transmission system and is suitable for some areas with bad natural environment.Aiming at the problem of optical input power and transmission distance limitation of high power remote pump transmission system.Based on the principle of random distributed feedback fiber laser,a novel remote pump transmission scheme is proposed.Specific research work is as follows:(1)Based on the theoretical analysis of Rayleigh scattering effect and Raman scattering effect of random distributed feedback laser in optical fiber,the constraints of traditional high-power remote pumped transmission system are studied.(2)The method to improve the pump power of the remote pump transmission system is studied theoretically through optimized optical path design.(3)Experimental verification: An experimental test platform was set up to verify the theoretical analysis results of the new remote pump transmission system(4)Based on the above analysis results,proposing an optimization scheme of a new type of remote pump transmission system,and calculating theoretically the transmission distance of pump.According to the theoretical calculation and experimental data,the output power of the new remote pump transmission system is 2.3d B better than that of the traditional remote pump transmission system,which not only improves the fiber input power of the pump,but also extends the transmission distance of the pump light.