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
收藏
页码：5053 / 5057
页数：5
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