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Proceedings Paper

Nonlithographic fabrication of microstructured fiber Bragg grating evanescent wave sensors
Author(s): D. Paladino; A. Iadicicco; S. Campopiano; A. Cutolo; A. Cusano
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Paper Abstract

This work is devoted to present and demonstrate a novel approach for the fabrication of micro-structured fiber Bragg gratings (MSFBGs). The MSFBG consists in a localized stripping of the cladding layer in a well defined region in the middle of the grating. The introduction of a perturbation along the grating leads to the formation of a defect state in the FBG spectral response that is tunable through the surrounding medium refractive index. Here, a two steps MSFBG fabrication technique, based on arc-discharge technique as fiber pre-treatment and maskless wet chemical etching to sensitize FBG to external refractive index, is proposed. Compared to the lithographic fabrication approach, previously proposed by the same authors and based on laser micromachining tool, this new simple and lowcost technique overcomes some technological drawbacks related to the presence of a mask and consequent undercutting etching. Furthermore, we experimentally demonstrate the potentiality of the presented approach to realize reliable MSFBGs enabling the prototyping of advanced photonics devices based on this technology.

Paper Details

Date Published: 28 April 2008
PDF: 10 pages
Proc. SPIE 7003, Optical Sensors 2008, 70031Z (28 April 2008); doi: 10.1117/12.781409
Show Author Affiliations
D. Paladino, Univ. of Sannio (Italy)
A. Iadicicco, Univ. of Naples Parthenope (Italy)
S. Campopiano, Univ. of Naples Parthenope (Italy)
A. Cutolo, Univ. of Sannio (Italy)
A. Cusano, Univ. of Sannio (Italy)


Published in SPIE Proceedings Vol. 7003:
Optical Sensors 2008
Francis Berghmans; Anna Grazia Mignani; Antonello Cutolo; Patrick P. Meyrueis; Thomas P. Pearsall, Editor(s)

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