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Proceedings Paper

Fabrication of arc-induced long-period gratings in different silica fibers
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Paper Abstract

In this work, we report on recent results about the fabrication of Long Period Gratings (LPGs) in different single mode optical fibers, by means of Electric Arc Discharge (EAD) technique. In particular, the results are related to three optical fibers with different doping elements, i.e.: standard telecommunication Ge-doped SMF28, highly photosensitive B/Gecodoped PS1250/1500, and P-doped P-SM-5 fibers. EAD leads to a point-by-point LPG inscription, due to localized tapering of the transversal size of the core and cladding regions along the fiber, and to changes of the silica refractive index due to the stress relaxation induced by local hot spots. Here, we take into consideration both standard and unconventional silica fibers and the aim of the work is to identify an appropriate “recipe” for each fiber, for manufacturing LPGs with strong and narrow attenuation bands (depth higher than 25 dB) and trivial power losses (<0.5 dB). Indeed, a proper combination of arc power and duration, as well as fiber tension, allows for the appropriate core and cladding modulation and thus for the desired LPGs spectral features. The sensitivity characteristics towards surrounding refractive index (SRI) and temperature changes of these LPGs are also investigated, highlighting the effects of different kind of doping.

Paper Details

Date Published: 16 May 2017
PDF: 6 pages
Proc. SPIE 10231, Optical Sensors 2017, 102312N (16 May 2017); doi: 10.1117/12.2267904
Show Author Affiliations
Rajeev Ranjan, Univ. degli Studi di Napoli Parthenope (Italy)
Flavio Esposito, Univ. degli Studi di Napoli Parthenope (Italy)
Stefania Campopiano, Univ. degli Studi di Napoli Parthenope (Italy)
Agostino Iadicicco, Univ. degli Studi di Napoli Parthenope (Italy)

Published in SPIE Proceedings Vol. 10231:
Optical Sensors 2017
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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