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10 August 2015 Simulation of optical microfiber for nonlinear strain sensing
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Proceedings Volume 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications; 962008 (2015) https://doi.org/10.1117/12.2193296
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China
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.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shi-han Tang "Simulation of optical microfiber for nonlinear strain sensing", Proc. SPIE 9620, 2015 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 962008 (10 August 2015); https://doi.org/10.1117/12.2193296
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