Mode-field adaptor between large-mode-area fiber and single-mode fiber based on fiber tapering and thermally expanded core technique

被引：20

作者：

Zhou, Xuanfeng ^{[1
]}

Chen, Zilun ^{[1
]}

Zhou, Hang ^{[1
]}

Hou, Jing ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

APPLIED OPTICS | 2014年 / 53卷 / 22期

关键词：

WAVE OUTPUT POWER; AMPLIFIER; LASER; KW;

D O I：

10.1364/AO.53.005053

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a method to fabricate a mode-field adaptor (MFA) for a large-mode-area (LMA) fiber and single-mode fibers (SMFs) based on fiber tapering and the thermally expanded core (TEC) technique. Through adiabatically tapering a LMA fiber by an oxygen-hydrogen flame, the mode-field diameter is decreased effectively with nearly no extra loss, which makes it possible to realize mode-field adaptation between the LMA fiber and SMFs. Both numerical calculation and experimental results show it is workable to realize fundamental mode propagation in LMA fiber and get a low insertion loss by this method. For a LMA fiber (d = 25 m, NA = 0.06) and a SMF (d = 4 m, NA = 0.2), a low loss with less than 0.4 dB has been obtained both in the forward and backward directions experimentally. (C) 2014 Optical Society of America

引用

页码：5053 / 5057

页数：5

共 50 条

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