Abstract
An asymmetric fiber (Fabry-Pérot, F-P) interferometric cavity with the good linearity and wide dynamic range was successfully designed based on the optical thin film characteristic matrix theory; by adjusting the material of two different thin metallic layers, the asymmetric fiber F-P interferometric cavity was fabricated by depositing the multi-layer thin films on the optical fiber’s end face. The asymmetric F-P cavity has the extensive potential application. In this paper, the demodulation method for the wavelength shift of the fiber Bragg grating (FBG) sensor based on the F-P cavity is demonstrated, and a theoretical formula is obtained. And the experimental results coincide well with the computational results obtained from the theoretical model.
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Chen, H., Liang, Y. Analysis of the tunable asymmetric fiber F-P cavity for fiber strain sensor edge-filter demodulation. Photonic Sens 4, 338–343 (2014). https://doi.org/10.1007/s13320-014-0158-3
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DOI: https://doi.org/10.1007/s13320-014-0158-3