首页
登录
注册
基于组合透镜与渐变折射率光纤改进激光器耦合效率的新方法
A novel method of improving coupling effiency of laser diode based on synthesized lens with graduaed index fiber
-
摘要: 提出一种利用组合透镜系统与渐变折射率光纤相结合改进激光器管芯到单模尾纤耦合性能的新方法．这种方法首先利用组合透镜系统对具有像散的激光器输出光束进行整形，然后采用渐变折射率光纤对整形后的光束进行聚焦处理，并将处理后的的光束耦合进入普通单模光纤．利用Jones矩阵理论分析表明，采用这种方法可以得到86％的功率耦合效率，1dB插入损耗对应的渐变折射率光纤长度、横向偏移和倾斜角容差分别为60um，30um和2．4°，且结构简单，便于操作，特别适合于大功率激射的激光模块到单模光纤的耦合．对于提高激光器输出功率，改善光束质量具有重要意义．Abstract: In this paper, a novel method of improving coupling effiency of laser diode to single mode fiber based on synthesized lens with graduaed index fiber is provided. The output beam with large astigmatism from laser diode is shaped and focused via synthesized lens and graduaed index fiber, and then couplied into single mode fiber. Analysis using Jones matrix theory indicates that the power coupler effect of 86% is obtained from output port of the single mode fiber. The tolerances for fiber length of graduaed index fiber, radial offset and tilt degree are 60 um, 30 um and 2.4 degree respectivily for 1 dB insert loss. This method can be used for improving the quality of optical beam and increasing output power for laser diode to single mode fiber with a large output optical power.
-
-
计量
- 文章访问数: 631
- HTML全文浏览数: 76
- PDF下载数: 0
- 施引文献: 0
下载: