Femtosecond laser point-by-point Bragg grating inscription in BDK-doped step-index PMMA optical fibers

被引：15
作者：
Hu, Xuehao [1 ,2 ]
Chen, Zhen [1 ,2 ]
Cheng, Xin [3 ]
Min, Rui [4 ]
Qu, Hang [1 ,2 ]
Caucheteur, Christophe [5 ]
Tam, Hwa-Yaw [3 ]
机构：
[1] Shantou Univ, Coll Sci, Res Ctr Adv Opt & Photoelect, Dept Phys, Shantou 515063, Guangdong, Peoples R China
[2] Shantou Univ, Key Lab Intelligent Mfg Technol, MOE, Shantou 515063, Guangdong, Peoples R China
[3] Hong Kong Polytech Univ, Photon Res Ctr, Dept Elect Engn, Hong Kong, Peoples R China
[4] Beijing Normal Univ Zhuhai, Ctr Cognit & Neuroergon, State Key Lab Cognit Neurosci & Learning, Zhuhai 519087, Guangdong, Peoples R China
[5] Univ Mons, Dept Electromagnetism & Telecommun, Blvd Dolez 31, B-7000 Mons, Belgium
来源：
OPTICS LETTERS | 2022年 / 47卷 / 02期
基金：
中国国家自然科学基金;
关键词：
FABRICATION; EXCITATION; SILICA;
D O I：
10.1364/OL.450047
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, the inscription of 2-mm-long fiber Bragg gratings (FBGs) on benzyl dimethyl ketal (BDK)-doped poly(methyl methacrylate) (PMMA) optical fibers by means of a femtosecond laser and a point-by-point FBG inscription technique is reported. The highest reflectivity of approximately 99% is obtained with a pulse energy of 68.5 nJ, showing a large refractive index modulation amplitude of 7.2 x 10(-4). Afterwards, grating stabilities at room and higher temperatures of up to 80 degrees C are investigated. (C) 2022 Optica Publishing Group
引用
收藏
页码：249 / 252
页数：4
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