Photonic-crystal and optical micro/nano fiber interferometric sensors

Joel Villatoro; Vittoria Finazzi; G. A. Cárdenas-Sevilla; Valerio Pruneri

doi:10.1117/12.868224

14 October 2010 Photonic-crystal and optical micro/nano fiber interferometric sensors

Joel Villatoro, Vittoria Finazzi, G. A. Cárdenas-Sevilla, Valerio Pruneri

Proceedings Volume 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2); 78390H (2010) https://doi.org/10.1117/12.868224
Event: Workshop on Specialty Optical Fibers and Their Applications (WSOF-10), 2010, Oaxaca, Mexico

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.

Citation Download Citation

Joel Villatoro, Vittoria Finazzi, G. A. Cárdenas-Sevilla, and Valerio Pruneri "Photonic-crystal and optical micro/nano fiber interferometric sensors", Proc. SPIE 7839, 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF-2), 78390H (14 October 2010); https://doi.org/10.1117/12.868224

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KEYWORDS

Interferometers

Microfluidics

Fiber optics sensors

Photonic crystal fibers

Sensors

Single mode fibers

Biosensing

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