Polymer optical fiber for large strain measurement based on multimode interference
Date of Original Version
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 × 104 με (2%) and a detection limit of 33 με have been demonstrated. © 2012 Optical Society of America.
Huang, Jie, Xinwei Lan, Hanzheng Wang, Lei Yuan, Tao Wei, Zhan Gao, and Hai Xiao. "Polymer optical fiber for large strain measurement based on multimode interference." Optics Letters 37, 20 (2012): 4308-4310. doi:10.1364/OL.37.004308.