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Influence of double Rayleigh backscatter in CATV systems with Raman amplifiers |
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| Authors: | WANG Chun-hua LI Li WANG Jia-shi FAN Wei-jie |
| Institution: | Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai 200072, P. R. China |
| Abstract: | The double Rayleigh backscatter (DRB) effect in long distance CATV systems using fiber Raman amplifiers (FRAs) is investigated theoretically in the paper. As a comparison, performance of a system with erbium doped fiber amplifier (EDFA) is also evaluated. According to the simulation results, it is found that, in case of FRA, the increase of carrier-to-noise ratio (CNR) due to the DRB effect will not impair the performance more than that using EDFA. |
| Keywords: | fiber Raman amplifier (FRA) double Rayleigh backscatter (DRB) carrier-to-noise ratio (CNR) |
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