Proposal and experimental verification of Bragg wavelength distribution measurement within a long-length FBG by synthesis of optical coherence function

In this paper, a sensor system for measuring continuous Bragg wavelength distribution in a long-length fiber Bragg grating is newly proposed, using synthesis of optical coherence function (SOCF), which is one of the spatial resolving techniques used for reflectometry. Experimental results are also r...

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Bibliographic Details
Published inOptics express Vol. 16; no. 11; pp. 7881 - 7887
Main Authors Hotate, Kazuo, Kajiwara, Koji
Format Journal Article
LanguageEnglish
Published United States 26.05.2008
Subjects
Computer Simulation
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Fiber Optic Technology - instrumentation
Fiber Optic Technology - methods
Interferometry - instrumentation
Interferometry - methods
Models, Theoretical
Refractometry - instrumentation
Refractometry - methods
Tomography, Optical Coherence - instrumentation
Tomography, Optical Coherence - methods
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Summary:In this paper, a sensor system for measuring continuous Bragg wavelength distribution in a long-length fiber Bragg grating is newly proposed, using synthesis of optical coherence function (SOCF), which is one of the spatial resolving techniques used for reflectometry. Experimental results are also reported. In the process of synthesizing optical coherence function, it is found that an apodization scheme is necessary to obtain the reflection spectrum of local section in a long-length FBG around the coherence peak. As a verification of this method, the detection of local Bragg wavelength shift due to temperature change within a short section in a long-length FBG is demonstrated experimentally.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.16.007881