Direct femtosecond laser inscription of an IR fluorotellurite fiber Bragg grating

被引：13

作者：

Liu, Lutao ^{[1
,2
]}

Chen, Fengyi ^{[3
]}

Xiao, Xusheng ^{[1
,2
]}

Li, Xingyong ^{[3
]}

Wang, Ruohui ^{[3
]}

Liu, Chengzhen ^{[1
,2
]}

Guo, Haitao ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China

[2] Univ Chinese Acad Sci UCAS, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Northwest Univ, Sch Phys, Xian 710069, Shaanxi, Peoples R China

来源：

OPTICS LETTERS | 2021年 / 46卷 / 19期

基金：

中国国家自然科学基金;

关键词：

OPTICAL-FIBER; GLASSES;

D O I：

10.1364/OL.439290

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This study proposes a novel, to the best of our knowledge, development of fluorotellurite glass fiber Bragg gratings (FBGs). Shell-like morphology was achieved using a single femtosecond laser pulse illuminated through the fiber's polymer coating. Different FBG fabrication methods and parameters were systematically studied to optimize performance. The fluorotellurite FBG exhibited a high sensitivity to writing laser power and reflectivity saturation effect in repetitive writing. A low-insertion-loss fluorotellurite FBG with a reflectivity of over 99% and bandwidth of less than 1 nm was successfully inscribed. The flexible inscription methods can write an FBG at any wavelength in the fluorotellurite glass transparent window, and are applicable to infrared fiber lasers or sensors. (C) 2021 Optical Society of America

引用

页码：4832 / 4835

页数：4

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