7 November 2012 SnO2 based optical fiber refractometers
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84216B (2012); doi: 10.1117/12.975021
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
In this work, the fabrication and characterization of refractometers based on lossy mode resonances (LMR) is presented. Tin dioxide (SnO2) films deposited on optical fibers are used as the LMR supporting coatings. These resonances shift to the red as a function of the external refractive index, enabling the fabrication of robust and highly reproducible wavelength-based optical fiber refractometers. The obtained SnO2-based refractometer shows an average sensitivity of 7198 nm/refractive index unit (RIU) in the range 1.333-1.420 RIU.
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P. Sánchez, C. R. Zamarreño, M. Hernaez, I. Del Villar, I. R. Matias, F. J. Arregui, "SnO2 based optical fiber refractometers", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216B (7 November 2012); doi: 10.1117/12.975021; https://doi.org/10.1117/12.975021

Optical fibers

Optical coatings

Refractive index

Scanning electron microscopy

Thin film coatings



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