Optical fiber sensor for simultaneous measurement of strain and temperature

Xiaodan Jin; James S. Sirkis; Jae-Kang Chung

doi:10.1117/12.275764

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6 June 1997 Optical fiber sensor for simultaneous measurement of strain and temperature

Xiaodan Jin; James S. Sirkis; Jae-Kang Chung

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Proceedings Volume 3042, Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation; (1997) https://doi.org/10.1117/12.275764
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

Abstract

An optical fiber sensor for simultaneous measurement of axial strain and temperature is reported. This sensor configuration consists of an in-line fiber etalon cascaded with a in-fiber Bragg grating and demultiplexed using a variation of coherence division multiplexing. The strain/temperature sensor is demonstrated by bonding it to the surface of an aluminum cantilever beam and embedding it into a graphite/epoxy composite cantilever beams. They are found to agree with traditional strain and temperature sensors to within 5 (mu) (epsilon) and 0.5 degree(s)C, respectively for a sensor gage length of approximately 1.0 cm.

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Xiaodan Jin, James S. Sirkis, and Jae-Kang Chung "Optical fiber sensor for simultaneous measurement of strain and temperature", Proc. SPIE 3042, Smart Structures and Materials 1997: Smart Sensing, Processing, and Instrumentation, (6 June 1997); https://doi.org/10.1117/12.275764

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