1. Refractive index sensing setup based on a taper and an intrinsic micro Fabry-Perot interferometer
- Author
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E. Gallegos-Arellano, M. Cano-Contreras, Everardo Vargas-Rodriguez, Roberto Rojas-Laguna, R. I. Mata-Chavez, A. D. Guzman-Chavez, Daniel Jauregui-Vazquez, and Miguel Torres-Cisneros
- Subjects
Materials science ,business.industry ,Resolution (electron density) ,Bending ,Curvature ,Atomic and Molecular Physics, and Optics ,Interferometry ,Wavelength ,Optics ,Optoelectronics ,business ,Sensitivity (electronics) ,Refractive index ,Fabry–Pérot interferometer - Abstract
In this work, a refractive index sensor setup based on a biconically tapered fiber (BTF) concatenated to an intrinsic all-fiber micro Fabry-Perot interferometer (MFPI) is presented. Here, the power of the MFPI spectral fringes decreases as the refractive index interacts with theevanescent field of the BTF segment. Furthermore, it is demonstrated that the RI sensitivity can be enhanced by bending the BTF segment.Finally, it is shown that by using this sensing arrangement, at ~1.53 µm wavelength, it is possible to detect refractive index changeswithin the measurement range of 1.3 to 1.7 RIU, with a sensitivity of 39.92 dB/RIU and a RI resolution of 2.5 x 10^-3 RIU with a curvature of C = 18.02 m^-1.
- Published
- 2015
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