Cost-Effective Fiber Multiplexing System Based on Low Coherence Interferometers and Application to Temperature Measurement
Based on the low-coherence interferometric principles, a cost-effective all-fiber Mach-Zehnder multiplexing system is proposed and demonstrated. The system consists of two interferometers: sensing interferometer and demodulation interferometer. By scanning an optical tunable delay line back and fort...
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Veröffentlicht in: | Photonic sensors (Berlin) 2016-12, Vol.6 (4), p.318-323 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Based on the low-coherence interferometric principles, a cost-effective all-fiber Mach-Zehnder multiplexing system is proposed and demonstrated. The system consists of two interferometers: sensing interferometer and demodulation interferometer. By scanning an optical tunable delay line back and forth constantly with a stable speed, sensing fibers with different optical paths can be temporal interrogated. The system is experimentally proved to have a high performance with a good stability and low system noises. The multiplexing capacity of the system is also investigated. An experiment of measuring the surrounding temperature is carried out. A sensitivity of 12 gm/℃ is achieved within the range of 20 ℃ to 80 ℃. This low cost fiber multiplexing system has a potential application in the remote monitoring of temperature and strain in building structures, such as bridges and towers. |
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ISSN: | 1674-9251 2190-7439 |
DOI: | 10.1007/s13320-016-0344-6 |