Fiber Bragg grating sensor interrogation system using a CCD side detection method with Superimposed blazed gratings

Author

Zhou, K. ; Simpson, A.G. ; Chen, X. ; Zhang, L. ; Bennion, I.

Author_Institution

Photonics Res. Group, Aston Univ., Birmingham, UK

Volume

16

Issue

6

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

1549

Lastpage

1551

Abstract

We present, for the first time to our knowledge, experimental evidence showing that superimposed blazed fiber Bragg gratings may be fabricated and used to extend the dynamic range of a grating-based spectrometer. Blazed gratings of 4° and 8° were superimposed in germanosilicate fiber by ultraviolet inscription and used in conjunction with a coated charged-coupled device array to interrogate a wavelength-division-multiplexing sensor array. We show that the system can be used to monitor strain and temperature sensors simultaneously with an employable bandwidth which is extendable to 70 nm.

Keywords

Bragg gratings; CCD image sensors; fibre optic sensors; optical communication equipment; optical fabrication; spectrometers; strain sensors; temperature sensors; wavelength division multiplexing; CCD side detection method; coated charged-coupled device array; fabrication; fiber Bragg grating sensor; germanosilicate fiber; grating-based spectrometer; strain monitoring; superimposed blazed gratings; temperature sensors; ultraviolet inscription; wavelength-division-multiplexing sensor array; Bragg gratings; Charge coupled devices; Dynamic range; Fiber gratings; Optical fiber devices; Optical fiber sensors; Sensor arrays; Sensor systems; Spectroscopy; Temperature sensors;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.826769

Filename

1300661