Fiber Bragg grating inscription based on optical filamentation of UV femtosecond laser pulses

被引：13
|
作者：
Saliminia, Ali [1 ]
Vallee, Real [1 ]
机构：
[1] Univ Laval, COPL, Quebec City, PQ G1V 0A6, Canada
来源：
OPTICS COMMUNICATIONS | 2014年 / 324卷
基金：
加拿大创新基金会; 加拿大自然科学与工程研究理事会;
关键词：
Fiber Bragg gratings; Femtosecond lasers; Optical filamentation; Nonlinear absorption; PHOTONIC CRYSTAL FIBERS; FUSED-SILICA; PHASE-MASK; WAVE-GUIDES; PURE-SILICA; PROPAGATION; RADIATION; LIGHT; FABRICATION; GLASSES;
D O I：
10.1016/j.optcom.2014.03.068
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present the fabrication and characterization of strong first-order Bragg gratings operating around 1550 nm in standard telecom fibers (SMF-28) by use of 160 Is UV laser pulses at 266 nm and a Talbot interferometer. Bragg reflectivities exceeding 50 dB are achieved in both hydrogen-free and hydrogen-loaded fibers. In addition, Bragg wavelength tuning over the telecom C-band using a single phase mask is demonstrated. We also show that the formation of Bragg gratings, relying on a two-photon absorption process, is intimately accompanied by the optical filamentation process of UV Is laser pulses during nonlinear propagation in the fiber. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：245 / 251
页数：7
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