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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 2 — Jan. 19, 2009
  • pp: 1042–1054

Not-lithographic fabrication of micro-structured fiber Bragg gratings evanescent wave sensors

Domenico Paladino, Agostino Iadicicco, Stefania Campopiano, and Andrea Cusano  »View Author Affiliations

Optics Express, Vol. 17, Issue 2, pp. 1042-1054 (2009)

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This work is devoted to present and to demonstrate a novel approach for the fabrication of micro-structured fiber Bragg gratings (MSFBGs) to be employed as technological platform for advanced opto-chemical sensors. Basically, the MSFBG consists in a localized SRI sensitization of the grating by deep cladding stripping. The introduction of a perturbation or defect along the grating leads to the formation of a defect state inside the FBG spectral response that is tunable through the surrounding medium refractive index. While its spectral features for sensing and communication applications have been widely described and commented elsewhere, here a simple fabrication procedure is presented as suitable technological assessment enabling cost effective and simple MSFBG production. It relies on a two steps technique based on arc-discharge procedure as fiber pre-treatment and mask-less wet chemical etching to locally sensitize the FBG to external refractive index. The new, simple and low-cost approach overcomes some technological drawbacks related to previous fabrication techniques adopting patterned masking procedures during the etching process. This work demonstrates the effectiveness of the proposed method reporting a detailed description of single and two defects MSFBG fabrication.

© 2009 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.3990) Optical devices : Micro-optical devices
(350.2660) Other areas of optics : Fusion

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: September 15, 2008
Revised Manuscript: October 31, 2008
Manuscript Accepted: November 3, 2008
Published: January 15, 2009

Domenico Paladino, Agostino Iadicicco, Stefania Campopiano, and Andrea Cusano, "Not-lithographic fabrication of micro-structured fiber Bragg gratings evanescent wave sensors," Opt. Express 17, 1042-1054 (2009)

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