Title :
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
fDate :
5/1/2008 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.920028
