【作者】 谭勇； 张喜和； 孙秀平；

【Author】 TAN Yong ZHANG Xi-he SUN Xiu-ping (Institute of Science,Changchun University of Science and Technology,Changchun 130022,China)

【机构】 长春理工大学理学院；

【摘要】 提出了光纤拉曼放大器中的后向自发拉曼散射噪声的数学描述及其机理,并从实验上得到了后向自发拉曼散射噪声的光谱,后向拉曼散射光在泵浦的入射处有最大的光强,而在信号光出射处光强很小,这对光纤传输信号是有利的。在信号的输出端,自发拉曼散射的光强只与泵浦输入强度有关,而与增益光纤长度无关。更多还原

【Abstract】 A mathematical description and its mechanics are presented for backward spontaneous Raman scatter noise in the fiber Raman amplifier.Its spectrum of backward spontaneous Raman scatter noise is obtained experimentally.It is obvious that spectral intensity of backward spontaneous Raman scatter noise is up to maximum at incident end of the fiber,to minimum at exit end.At the end of output,its intensity is only related to the pump input intensity,is not related to the length.更多还原