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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 4 — Feb. 15, 2014
  • pp: 861–864

Simple technique for integrating compact silicon devices within optical fibers

A. Micco, A. Ricciardi, G. Quero, A. Crescitelli, W. J. Bock, and A. Cusano  »View Author Affiliations


Optics Letters, Vol. 39, Issue 4, pp. 861-864 (2014)
http://dx.doi.org/10.1364/OL.39.000861


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Abstract

In this work, we present a simple fabrication process enabling the integration of a subwavelength amorphous silicon layer inside optical fibers by means of the arc discharge technique. To assess our method, we have fabricated a compact in-line Fabry–Perot interferometer consisting of a thin (<1μm) a-Si:H layer completely embedded within a standard single-mode optical fiber. The device exhibits low loss (1.3 dB) and high interference fringe visibility (80%) both in reflection and transmission, due to the high refractive index contrast between silica and a-Si:H. A high linear temperature sensitivity up to 106pm/°C is demonstrated in the range 120°C–400°C. The proposed interferometer is attractive for point monitoring applications as well as for ultrahigh-temperature sensing in harsh environments.

© 2014 Optical Society of America

OCIS Codes
(050.2230) Diffraction and gratings : Fabry-Perot
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.6780) Instrumentation, measurement, and metrology : Temperature
(220.0220) Optical design and fabrication : Optical design and fabrication

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: October 23, 2013
Revised Manuscript: December 18, 2013
Manuscript Accepted: January 1, 2014
Published: February 6, 2014

Citation
A. Micco, A. Ricciardi, G. Quero, A. Crescitelli, W. J. Bock, and A. Cusano, "Simple technique for integrating compact silicon devices within optical fibers," Opt. Lett. 39, 861-864 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-4-861

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