A Proposal of Temperature Sensing Using a Thin-Film Bandpass Filter and Dual-Wavelength Push–Pull Reflectometry

Author

Onoda, Seiichi ; Tsukamoto, Nobuo ; Ogino, Mineo ; Yamashita, Kiichi ; Yumoto, Osamu ; Inoue, Keiichi ; Komatsu, Yasutoshi

Author_Institution

Watanabe, Inc., Saitama

Volume

20

Issue

9

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

688

Lastpage

690

Abstract

A new temperature sensing system, which utilizes a thin-film bandpass filter deposited on an optical fiber end face and dual-wavelength push-pull reflectometry, is proposed. The system has the following advantages over the fiber Bragg grating sensor: it can observe the temperature in a localized small area and it gets rid of microcrack growth caused by stripping of cover coating from a fiber. The feasibility of the system has been verified by simulation.

Keywords

Bragg gratings; band-pass filters; fibre optic sensors; optical filters; temperature measurement; temperature sensors; cover coating; dual-wavelength push-pull reflectometry; fiber Bragg grating sensor; microcrack growth; optical fiber end face; optical fiber measurement; optical filters; pseudonoise coding; temperature measurement; temperature sensing; thin-film bandpass filter; Band pass filters; Coatings; Optical fibers; Optical films; Proposals; Reflectometry; Sensor systems; Sputtering; Temperature sensors; Transistors; Correlators; optical fiber measurement; optical filters; pseudonoise coding; reflectometry; temperature measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2008.920028

Filename

4479622