Practical applications of extrinsic Fabry-Perot interferometric (EFPI) sensors

Kent A. Murphy

doi:10.1117/12.255384

25 October 1996 Practical applications of extrinsic Fabry-Perot interferometric (EFPI) sensors

Kent A. Murphy

Proceedings Volume 2839, Fiber Optic and Laser Sensors XIV; (1996) https://doi.org/10.1117/12.255384
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Fiber sensors have found numerous industrial, military and civil applications in the last decade. These sensors possess small size and high sensitivity, are immune to electromagnetic interference and can be easily modified for distributed or multi-parameter measurement. The extrinsic Fabry-Perot interferometric (EFPI) fiber optic sensor, though it retains all these advantages, still has a few limitations which have prevented its large scale commercialization as an effective strain gage. We discuss these limitations and report the status of manufacturing techniques. Recent progress in the development of extrinsic Fabry-Perot interferometric sensor is reported. Techniques for absolute measurement are demonstrated and adhesives and endface coatings for sensor fabrication are analyzed. Many different applications are presented along with discussions of packaging and attachment issue problems and solutions. The applications include high temperature, low temperature, and harsh environments such as Mach 6 wind tunnels and rock drills.

Citation Download Citation

Kent A. Murphy "Practical applications of extrinsic Fabry-Perot interferometric (EFPI) sensors", Proc. SPIE 2839, Fiber Optic and Laser Sensors XIV, (25 October 1996); https://doi.org/10.1117/12.255384

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