Naruse H, Tateda M
Access Network Service Systems Laboratory, NTT, 1-7-1 Hanabatake, Tsukuba, Ibaraki 305-0805, Japan.
Appl Opt. 1999 Nov 1;38(31):6516-21. doi: 10.1364/ao.38.006516.
We theoretically analyze the relation between the pulse width of light launched into an optical fiber and the resultant power spectrum of spontaneous Brillouin backscattered light. Through this analysis, we determine numerically that the bandwidth of the Brillouin backscattered light becomes wider, and thus the measurement accuracy in determining the peak-power frequency degrades in approximately inverse proportion to the launched pulse width. Experimental results with various pulse widths are in good agreement with the derived theoretical results.
我们从理论上分析了注入光纤的光脉冲宽度与自发布里渊背向散射光的功率谱之间的关系。通过该分析，我们数值确定了布里渊背向散射光的带宽变宽，因此在确定峰值功率频率时的测量精度大约与注入脉冲宽度成反比下降。各种脉冲宽度的实验结果与推导的理论结果吻合良好。
