Title

Polymer Optical Fiber for Large Strain Measurement Based on Multimode Interference

Abstract

This Letter reports a polymer optical fiber (POF) based large strain sensor based on the multimode interference (MMI) theory for the application of structural health monitoring. A section of POFs is sandwiched between two silica single mode fibers to construct a single-mode-multimode-single-mode structure that produces a MMI spectrum. The strain sensing mechanism of the device was investigated and experimentally verified. A large dynamic range of 2 x 104 µε (2%) and a detection limit of 33 µε have been demonstrated.

Department(s)

Electrical and Computer Engineering

Sponsor(s)

National Science Foundation (U.S.)

Comments

This work is supported by National Science Foundation under the contract CMMI-1200787.

Keywords and Phrases

Detection limits; Dynamic range; Large strains; Multi-mode interference; Strain sensing, Plastic optical fibers; Silica; Single mode fibers, Multimode fibers

International Standard Serial Number (ISSN)

0146-9592

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2012 Optical Society of America, All rights reserved.

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