YUAN Jian-guo,LIANG Tian-yu,HE Li,HE Qing-ping.Performance of DRA with different pumping schemes based on coupling equation[J].Optoelectronics Letters,2011,7(3):209-212 Performance of DRA with different pumping schemes based on coupling equation Author Name Affiliation YUAN Jian-guo  Key Laboratory of Optical Fiber Communications Technology,Chongqing University of Posts and Telecommunications；  LIANG Tian-yu  Key Laboratory of Optical Fiber Communications Technology,Chongqing University of Posts and Telecommunications；  HE Li  Key Laboratory of Optical Fiber Communications Technology,Chongqing University of Posts and Telecommunications；  HE Qing-ping  Key Laboratory of Optical Fiber Communications Technology,Chongqing University of Posts and Telecommunications；  Abstract:       After the coupling equations of co-pumping,counter-pumping and bidirectional-pumping distributed Raman amplifiers(DRAs) are theoretically analyzed,the power distributions of these three DRAs are acquired with numerical analysis.The performance factors,such as net gain(NG),amplified spontaneous emissions(ASE) noise,double Rayleigh backscattering(DRB) noise,noise figure(NF) and optical signal noise ratio(OSNR),are discussed in depth.It can be found that the NGs of the three DRAs are almost equal.T... Hits: 3793 Download times: 196 View Full Text    Download reader