Abstract

A microcavity extrinsic Fabry-Perot interferometric (EFPI) fiber-optic sensor is presented for measurement of strain. The EFPI sensor is fabricated by micromachining a cavity on the tip of a standard single-mode fiber with a femtosecond (fs) laser and is then self-enclosed by fusion splicing another piece of single-mode fiber. The fs-laser-based fabrication makes the sensor thermally stable to sustain temperatures as high as 800°C. The sensor exhibits linear performance for a range up to 3700 µε and a low temperature sensitivity of only 0.59 pm/°C through 800°C.

Department(s)

Electrical and Computer Engineering

Sponsor(s)

National Science Foundation (U.S.)

Comments

The authors acknowledge the support of National Science Foundation project under grant CMMI-1200787.

Keywords and Phrases

Fabry-Perot; Femtosecond (fs) laser; Femtosecond-laser; Low temperature sensitivity; Optical fiber sensor; Standard single mode fibers; Strain analysis; Thermally stable; Composite micromechanics; Fabry-Perot interferometers; High temperature applications; Interferometry; Microcavities; Micromachining; Single mode fibers; Temperature; Sensors; Extrinsic Fabry-Perot interferometric

International Standard Serial Number (ISSN)

0091-3286

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2014 The Authors, All rights reserved.

Creative Commons Licensing

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

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