Photoinduced modifications in fiber gratings inscribed directly by infrared femtosecond irradiation

Abstract

The structure of fiber Bragg gratings inscribed pointby-point by an infrared femtosecond laser is studied by quantitative phase microscopy. Results show that these gratings present a central region with a depressed refractive index surrounded by an outer corona with increased refractive index. The refractive index profile suggests the presence of microvoids embedded in a region of the core. © 2006 IEEE.

Publication DOI: https://doi.org/10.1109/LPT.2006.884883
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Uncontrolled Keywords: femtosecond microfabrication,fiber Bragg gratings (FBGs),Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Full Text Link: http://ieeexplo ... rnumber=1715396
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2006-11-01
Authors: Martínez, Amós
Dubov, Mykhaylo ( 0000-0002-6764-683X)
Khrushchev, Igor
Bennion, Ian

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