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Proceedings Paper

Simulation of optical microfiber for nonlinear strain sensing
Author(s): Shi-han Tang
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Paper Abstract

We investigate the performance of a fiber-optic strain sensor based on the nonlinear process Four-Wave Mixing. This simple device of only a microfiber has the merits of easy coupling, low loss and relatively pure mode to be applied in the fiber network. And microfiber-structure renders the sensor with small size and relatively large nonlinear coefficient. The strain-induced shift of both the signal and idler peaks are large enough to be detected. According to calculated results in this paper, the shift range increases with the decease of the microfiber’s diameter and the increase of strain on the fiber until a critical value. We presented the trends in a figure, and found the maximum shift is at 59.51 nm when we adjusted the diameter within strain of 30mε, and the high strain sensitivity of 2 pm/με is achieved when we set the pumping wavelength at 1550nm, peak power at 100 W. This strain sensor has high sensitivity, light and portable performance which has wide applications, such as mechanical detection or fault diagnosis in auto, aircraft, navigation. Moreover, large strain-induced shift could be applies to a number of wavelength selected devices, for example, a tunable laser or a wavelength-tuning entangled photon source which is significant in quantum information process.

Paper Details

Date Published: 10 August 2015
PDF: 7 pages
Proc. SPIE 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 962008 (10 August 2015); doi: 10.1117/12.2193296
Show Author Affiliations
Shi-han Tang, Nanjing Univ. (China)

Published in SPIE Proceedings Vol. 9620:
2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Xuping Zhang; David Erickson; Xudong Fan; Zhongping Chen, Editor(s)

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