Tunable Chirped Fiber Bragg Grating Filter Based on Special Strain Function Modulation and Its Application in Fiber Sensor

Author

Dong, Bo ; Zhao, Qida ; Liu, Lihui ; Huang, Guiling ; Jin, Long ; Zhou, Jin ; Liao, Tongqing

Author_Institution

Inst. of Modern Opt., Nankai Univ., Tianjin

Volume

26

Issue

14

fYear

2008

fDate

7/15/2008 12:00:00 AM

Firstpage

2286

Lastpage

2290

Abstract

A novel technique for chirp control of a uniform fiber Bragg grating (FBG) based on the special strain function modulation is presented. A cylinder taper cantilever beam (CTCB) is specially designed and capable of providing special position-dependent strain function gradients along an originally uniform FBG, which allows tunable quasi-triangular and quasi-Gauss-gradient FBG filter. Furthermore, the feasibility of the tunable chirped FBG based on the strain function modulation as sensor is validated. This state-of-art technique is expected to be applied in fiber filter, FBG sensor and multiwavelength fiber laser.

Keywords

Bragg gratings; cantilevers; fibre optic sensors; optical fibre filters; optical modulation; FBG filter; chirp control; cylinder taper cantilever beam; fiber Bragg grating filter; fiber sensor; strain function gradients; strain function modulation; Bragg gratings; Capacitive sensors; Chirp modulation; Fiber gratings; Fiber lasers; Filters; Optical fiber sensors; Strain control; Structural beams; Tunable circuits and devices; Bandwidth; cylinder taper cantilever beam; fiber Bragg grating (FBG); filter;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2008.923243

Filename

4609984