采用改进的时域消光法测量了分布式光纤喇曼放大器的双瑞利散射(DRS)噪声,并给出了相应的光学信噪比OSNR DRS.当光纤喇曼放大器在C波段的开关增益约为13dB时,测得输出端的OSNRDRS约为45dB.
In distributed Raman fiber amplifier, the measurements of double Rayleigh scatter (DRS) noise has been made using a modified time-domain extension method. The optical signal-to-DRS-noise ratio (OSNRDRs) is calculated. When the on-off gain of the C-band Raman amplifier is about 13 dB, the OSNRDRs is 45 dB.