Presentation | 2009-03-06 Improvement in Measurement Accuracy and Speed of Distributed Sensing in a Long-length FBG Koji KAJIWARA, Kazuo HOTATE, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | A new sensor system for measuring the Bragg wavelength distribution in a long-length fiber Bragg grating was proposed recently. It is based on the technique called synthesis of optical coherence function (SOCF) which is one of the techniques for reflectometry. By measuring the Bragg-wavelength distribution in the grating, it is possible to know the strain or temperature distribution. In the process of evaluating the performance of the sensing system, it is found that the reflectivity of the FBGs needs to be lower for realizing the distributed sensor with sufficient accuracy by the simulation. In this paper, the relation between the reflectivity and the measurement accuracy is verified by the experiment. Besides, a measurement speed is an important factor for the health-monitoring technique. We also demonstrate the measurement of local reflection spectrum with 1-kHz sampling rate for one position. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Fiber Bragg Grating / Distributed Sensor / Synthesis of Optical Coherence Function |
Paper # | OFT2008-94,OPE2008-194 |
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Conference Information | |
Committee | OFT |
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Conference Date | 2009/2/27(1days) |
Place (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Optical Fiber Technology (OFT) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Improvement in Measurement Accuracy and Speed of Distributed Sensing in a Long-length FBG |
Sub Title (in English) | |
Keyword(1) | Fiber Bragg Grating |
Keyword(2) | Distributed Sensor |
Keyword(3) | Synthesis of Optical Coherence Function |
1st Author's Name | Koji KAJIWARA |
1st Author's Affiliation | Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo() |
2nd Author's Name | Kazuo HOTATE |
2nd Author's Affiliation | Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo |
Date | 2009-03-06 |
Paper # | OFT2008-94,OPE2008-194 |
Volume (vol) | vol.108 |
Number (no) | 450 |
Page | pp.pp.- |
#Pages | 6 |
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