Fiber probe microcavities for refractive index and temperature discrimination

Ricardo M. André; Stephen C. Warren-Smith; Martin Becker; Jan Dellith; Manfred Rothhardt; M. I. Zibaii; H. Latifi; Manuel B. Marques; Hartmut Bartelt; Orlando Frazão

doi:10.1117/12.2236009

30 May 2016 Fiber probe microcavities for refractive index and temperature discrimination

Ricardo M. André, Stephen C. Warren-Smith, Martin Becker, Jan Dellith, Manfred Rothhardt, M. I. Zibaii, H. Latifi, Manuel B. Marques, Hartmut Bartelt, Orlando Frazão

Author Affiliations +

Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 991616 (2016) https://doi.org/10.1117/12.2236009
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland

Abstract

Fiber probe structures composed of two physical microcavities were created using focused ion beam technology. These structures have a tip-like shape as they were milled in preciously etched tapered fiber tips. The microprobes are then characterized for temperature and refractive index sensing using a signal filtering technique to discriminate signals from distinct microcavities. Using fast Fourier transforms combined with band-pass filters, it is possible to reconstruct the spectra of each cavity independently and thus measure their individual spectral shifts.

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Ricardo M. André, Stephen C. Warren-Smith, Martin Becker, Jan Dellith, Manfred Rothhardt, M. I. Zibaii, H. Latifi, Manuel B. Marques, Hartmut Bartelt, and Orlando Frazão "Fiber probe microcavities for refractive index and temperature discrimination", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 991616 (30 May 2016); https://doi.org/10.1117/12.2236009

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