Photonic Sensors, Volume. 5, Issue 3, 224(2015)
Dispersion Effects of High-Order-Mode Fiber on Temperature and Axial Strain Discrimination
A new approach utilizing effects of dispersion in the high-order-mode fibers (HOMFs) to effectively discriminate changes in environmental temperature and axial strain is proposed and experimentally demonstrated. Experimental characterization of a HOMF-based fiber modal interferometer with a sandwich fiber structure exhibits excellent agreements with numerical simulation results. A Fourier transform method of interferometry in the spatial frequency domain is adopted to distinguish mode coupling between different core-guided modes. Distinct phase sensitivities of multiple dispersion peaks are extracted by employing a novel phase demodulation scheme to realize dual-parameter sensing.
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Yanping XU, Ping LU, Jia SONG, Ping LU, Liang CHEN, Xiaoyi BAO, and Xiaopeng DONG. Dispersion Effects of High-Order-Mode Fiber on Temperature and Axial Strain Discrimination[J]. Photonic Sensors, 2015, 5(3): 224
Category: Regular
Received: Mar. 3, 2015
Accepted: May. 22, 2015
Published Online: Oct. 22, 2015
The Author Email: LU Ping (plu@uottawa.ca)