Interferometric full optical fiber sensor for simultaneously measuring temperature and strain based on FP-MZ structure
The invention discloses an interferometric full optical fiber sensor for simultaneously measuring the temperature and the strain based on an FP-MZ structure. The end faces of single-mode optical fibers are corroded by adopting 40 percent hydrofluoric acid to obtain an optical fiber FP structure; tai...
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Main Authors | , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
29.06.2018
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses an interferometric full optical fiber sensor for simultaneously measuring the temperature and the strain based on an FP-MZ structure. The end faces of single-mode optical fibers are corroded by adopting 40 percent hydrofluoric acid to obtain an optical fiber FP structure; tail fibers of the optical fiber FP are subjected to fusion welding by using a taper waist expansion fusion welding technology to obtain an optical fiber MZ interference structure; a sensor for simultaneously measuring the temperature and the strain is produced, temperature and strain sensing characteristics are tested and analyzed, and a mathematical model between the temperature and the strain of the system and wavelengths of a reflection spectrum and projection spectrum is established; the change of dual parameters, namely external temperature and strain can be simultaneously monitored by a sensing coefficient matrix of the system. The sensor has the advantages of simple structure, low production cost, good measuri |
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Bibliography: | Application Number: CN201711430659 |