Polymer Optical Fiber for Large Strain Measurement Based on Multimode Interference
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.
J. Huang et al., "Polymer Optical Fiber for Large Strain Measurement Based on Multimode Interference," Optics Letters, vol. 37, no. 20, pp. 4308-4310, Optical Society of America, Oct 2012.
The definitive version is available at http://dx.doi.org/10.1364/OL.37.004308
Electrical and Computer Engineering
National Science Foundation (U.S.)
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)
Article - Journal
© 2012 Optical Society of America, All rights reserved.