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Proceedings Paper

Photonic-crystal and optical micro/nano fiber interferometric sensors
Author(s): Joel Villatoro; Vittoria Finazzi; G. A. Cárdenas-Sevilla; Valerio Pruneri
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Paper Abstract

We report on mode interferometers built with photonic crystal fibers (PCFs) and optical micro/nano fibers (MNFs). This type of mode interferometers exploit the beating between two modes, are very compact and highly stable over time for which they are suitable for a myriad of sensing applications. Moreover, their fabrication is simple since it can be carried out by means of cleaving and splicing or tapering techniques. The transmission spectrum of these interferometers typically exhibits truly sinusoidal interference patterns which simplifies their analysis. PCF-based mode interferometers may have niche applications since they are capable of operating at extreme temperatures (up to 1000ºC). To make these interferometers functional and competitive, our group has placed emphasis on the design of the PCF microstructure, minimizing the insertion losses, and on the elaboration of ad-hoc packaging for both harsh environment and biosensing applications. MNF-based interferometers, on the other hand, are extremely compact, require minimal amount of sample and can be combined with microfluidics for which they may be adequate for refractometric or biosensing applications. Adequate protection of the MNFs and ad-hoc microfluidics are being implemented to make MNF interferometers practical.

Paper Details

Date Published: 14 October 2010
PDF: 4 pages
Proc. SPIE 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2), 78390H (14 October 2010); doi: 10.1117/12.868224
Show Author Affiliations
Joel Villatoro, ICFO-Institut de Ciències Fotòniques (Spain)
Vittoria Finazzi, ICFO-Institut de Ciències Fotòniques (Spain)
G. A. Cárdenas-Sevilla, ICFO-Institut de Ciències Fotòniques (Spain)
Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Valerio Pruneri, ICFO-Institut de Ciències Fotòniques (Spain)
Institució Catalana de Recerca i Estudis Avançats (Spain)

Published in SPIE Proceedings Vol. 7839:
2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2)
Juan Hernández-Cordero; Ismael Torres-Gómez; Alexis Méndez, Editor(s)

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