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Journal of Microwaves, Optoelectronics and Electromagnetic Applications

versão On-line ISSN 2179-1074

Resumo

PATERNO, Aleksander Sade; OLIVEIRA, Valmir de  e  KALINOWSKI, Hypolito J.. Automated photosensitivity enhancement in optical fiber tapers. J. Microw. Optoelectron. Electromagn. Appl. [online]. 2011, vol.10, n.1, pp.24-32. ISSN 2179-1074.  https://doi.org/10.1590/S2179-10742011000100003.

An alternative technique that uses a flame-brush at high temperature to enhance UV light photosensitivity in an optical fiber is described. An extreme low-cost air aspirated propane-butane mini-torch is used, which produces a lower temperature flame than the one in the flame-brush original technique. It is shown that this change in the previous technique is also capable of improving photosensitivity and allowing the fiber Bragg grating imprinting process to be accelerated. Since the flame-brush photosensitivity enhancement process is designed to operate in an automated fiber taper rig, the process was evaluated in optical fiber tapers with different diameters. In this case, changes in photosensitivity are observed in the tapers in addition to the intrinsic photosensitivity occurring in the pristine fiber without being tapered.

Palavras-chave : Fiber Bragg gratings; optical fiber taper; photosensitivity; flame-brush technique.

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