A phase-shifted linearly chirped fiber Bragg grating with tunable bandwidth

被引：17
|
作者：
Ngo, NQ
Li, SY
Binh, LN
Tjin, SC
机构：
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Photon Res Ctr, Singapore 639798, Singapore
[2] Monash Univ, Dept Elect & Comp Syst Engn, Melbourne, Vic 3180, Australia
来源：
OPTICS COMMUNICATIONS | 2006年 / 260卷 / 02期
关键词：
phase shift; fiber Bragg grating; tunable filter; bandpass filter; optical filter;
D O I：
10.1016/j.optcom.2005.10.068
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate a new method to broaden and adjust the transmission bandwidth of a phase-shifted linearly chirped fiber Bragg grating (PS-LCFBG) after its fabrication. A movable thermal head is used to heat the PS-LCFBG at a small contact point. The original ultra-narrow transmission bandwidth of the PS-LCFBG can be broadened due to both the presence of the passband peak caused by the thermally-induced temporary phase shift and the passband caused by the thermally-induced local Bragg wavelength shift. The transmission bandwidth of the new passband peak can be adjusted by changing the position of the thermal head. The transmission bandwidth of the PS-LCFBG can be broadened from < 10 pm to 0.16 nm, and can be tuned from 0.16 to 1.05 nm. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：438 / 441
页数：4
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