A DFB-FL Wavelength Shift Interrogating Scheme Based on C2H2 Absorption Spectrum

Author

Song, Fujun ; Chang, Jun ; Wei, Yubin ; Wang, Qingpu ; Huang, Qingjie ; Kong, Delong ; Wang, Zongliang

Author_Institution

Sch. of Inf. Sci. & Eng., Shandong Univ., Jinan, China

fYear

2011

fDate

16-18 May 2011

Firstpage

1

Lastpage

4

Abstract

A Distributed feedback fiber laser (DFB-FL) wavelength shift interrogation scheme based on C₂H₂ absorption spectrum is demonstrated in this paper, the interrogation scheme takes advantage of the transformation the wavelength shift to intensity change of the light by gas absorption spectrum. Interrogation the wavelength shifting of the DFB-FL by C₂H₂ absorption line around 1535nm is taken as example. The theory, structure of the systems, resolution analysis is presented in detail. Because gas absorption spectrum is stable, the system based on this interrogation scheme has high precision and stability; it has good prospects in DFB-FL sensor wavelength interrogation system.

Keywords

distributed feedback lasers; fibre lasers; organic compounds; spectral line shift; spectrochemical analysis; spectroscopic light sources; C₂H₂ absorption line; DFB-FL; absorption spectrum; distributed feedback fiber laser; gas absorption spectrum; resolution analysis; wavelength shift interrogating scheme; Absorption; Distributed feedback devices; Fiber lasers; Laser feedback; Optical fiber communication; Optical fiber polarization; Optical fiber sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronics (SOPO), 2011 Symposium on

Conference_Location

Wuhan

ISSN

2156-8464

Print_ISBN

978-1-4244-6555-2

Type

conf

DOI

10.1109/SOPO.2011.5780619

Filename

5780619