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本文叙述了一个测量1.06—1.6微米波长范围的损耗和色散的万用纤维光学测量系统。光源是一台由锁模并 Q 调的1.06微米 Nd:YAG 激光器泵浦的硅纤维喇曼激光器。在低耗单模硅纤维中,在1.1——1.6微米波长范围内产生亚毫微秒多重斯托克脉冲。已证明用这台近红外纤维喇曼激光器能显示单模和多模纤维试样的各种传输特性。在硅纤维损耗最小和材料色散最小的波长范围测得了损耗谱、模间色散和模内色散的数据。
This article describes a universal fiber optical measurement system for measuring loss and dispersion in the 1.06-1.6 micron wavelength range. The light source is a silicon fiber Raman laser pumped by a mode-locked and Q-switched 1.06-micron Nd: YAG laser. In low-power single-mode silicon fibers, sub-nanosecond multi-Stokes pulses are generated in the 1.1--1.6 micron wavelength range. This near infrared fiber Raman laser has been demonstrated to show the various transmission characteristics of single and multimode fiber samples. The data of loss spectrum, mode dispersion and in-mold dispersion were measured in the wavelength range where the loss of silicon fiber is the smallest and the dispersion of material is the smallest.