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熔融拉锥技术在光纤耦合传输中的应用
引用本文:彭博,张海涛,闫平,巩马理. 熔融拉锥技术在光纤耦合传输中的应用[J]. 激光技术, 2009, 33(5): 470-472. DOI: 10.3969/j.issn.1001-3806.2009.05.007
作者姓名:彭博  张海涛  闫平  巩马理
作者单位:1.清华大学 精密仪器与机械学系 光子与电子技术研究中心 摩擦学国家重点实验室 北京 100084
摘    要:为了实现光纤激光器和放大器系统中不同参量光纤的低损耦合,采用光纤拉锥方法来实现光纤连接。经过理论分析,在大数值孔径光纤传输到小数值孔径光纤时,采用光纤拉锥技术可以有效地提高传输功率。采用改造的大模光纤熔接机进行拉锥实验研究,精确控制拉锥时间、放电功率、步进量和步进速率可以获得不同的拉锥形状。采用光纤拉锥元件对标准单模光纤和大模场光纤进行耦合实验,得到纤芯内传输的耦合输出效率由之前的50%提高到85%,获得了低损连接效果。结果表明,熔融拉锥技术为不同光纤之间的耦合提供了一种简单实用的方式。

关 键 词:激光技术   光纤激光器   熔融拉锥技术   耦合效率
收稿时间:2008-12-03
修稿时间:2009-01-05

Fused taper technique for fiber coupling applications
PENG Bo,ZHANG Hai-tao,YAN Ping,GONG Ma-li. Fused taper technique for fiber coupling applications[J]. Laser Technology, 2009, 33(5): 470-472. DOI: 10.3969/j.issn.1001-3806.2009.05.007
Authors:PENG Bo  ZHANG Hai-tao  YAN Ping  GONG Ma-li
Abstract:In order to reduce coupling loss between different fibers in a fiber laser or amplifier, fused taper technique was applied to couple fibers. Based on theoretical analysis, when the laser signal transmitted from a large numerical aperture (NA) fiber into a small NA fiber, the transmitted power can be improved effectively with fused taper technique. In experiment, large-mode fiber fusion splicer was applied to taper fibers. Different tapered fibers can be achieved with precise control of arc-discharged time and power, stepped size and velocity. The transmitted efficiency was improved from 50% to 85% with much lower coupling loss for the coupling between a standard single-mode fiber and a large-mode fiber based on fused taper technique.. Fused taper technique offers a simple and practical method to couple different fibers.
Keywords:Laser technique  Fiber lasers  Fused taper technique  Coupling efficiency
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