Efficient coupling from semiconductor lasers into single-mode fibers with tapered hemispherical ends.
Efficient coupling from semiconductor lasers into single-mode fibers with tapered hemispherical ends.
复制标题
从半导体激光器到具有锥形半球形端部的单模光纤的有效耦合。
DOI：
10.1364/ao.19.002578
复制
发表时间：
1980
期刊：
影响因子：
1.9
通讯作者：
N. Tokoyo
中科院分区：
文献类型：
--
作者：
H. Kuwahara;M. Sasaki;N. Tokoyo
描述了从 1.3 微米范围内的半导体激光器到具有锥形半球形端部的单模光纤（TH 光纤）的有效耦合。 TH 光纤耦合可实现超过 35% 的耦合效率。端半球的最佳半径约为 20 微米，通过在电弧放电中拉伸光纤获得良好的重复性。结果发现，TH 光纤耦合由于反射光引起的激光特性变化远小于平端耦合。制造了使用 TH 光纤耦合的稳定耦合模块以供系统使用。
An efficient coupling from semiconductor lasers in the 1.3-microm range into single-mode fibers with tapered hemispherical ends (TH fiber) is described. Coupling efficiency of more than 35% is attainable with TH fiber coupling. Optimum radius of the end hemisphere is ~20 microm and is obtained with good reproducibility by drawing the fiber in an arc discharge. It was found that changes in laser characteristics due to reflected light are far less for TH fiber coupling than for flat-end coupling. Stable coupling modules using TH fiber coupling were fabricated for system use.