Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper CM3_1

Demonstration of negative refractive index photosensitivity mechanism in a phosphate glass optical fibre using 248nm, 500fs laser radiation

Not Accessible

Your library or personal account may give you access

Abstract

Several studies have been presented on the photosensitivity and index engineering of phosphate glasses using high intensity ultraviolet [1, 2] lasers. These studies are of particular interest due to the increased number of applications of rare-earth codoped phosphate glasses in the development of high efficiency planar and fibre active components. We present results on the Bragg grating recording behavior and photosensitivity of an all-phosphate glass rare earth doped optical fibre, utilizing 248nm, 500fs laser radiation. In the grating inscription results presented, non-monotonic refractive index changes with respect to accumulated energy density are observed. This unique behavior resembles that of the Type IIA photosensitivity mechanism that usually occurs during grating recording in high-Ge doped silicate glass optical fibres using deep ultraviolet laser sources; however, never been observed before in grating recording in soft glasses, including phosphate glass fibres. Moreover, the origin of the negative refractive index changes induced, is investigated utilizing Knoop micro-hardness (HK) measurements, performed in irradiated and side-polished fibres [3]. The Bragg grating inscription was performed using a 248nm, 500-fs KrF excimer-dye laser system, at a 10Hz repetition rate. The experimental set-up used for grating recording was a double phase mask interferometer, being described elsewhere [4]. A single mode phosphate glass, Er/Yb codoped phosphate glass optical fibre, manufactured by INO-Canada, was exposed. The concentration of the rare earth dopants in the fibre are 0.90wt% for Er, and 7.0wt% for Yb.

© 2011 Optical Society of America

PDF Article
More Like This
Photosensitivity of Er/Yb-codoped Schott IOG1 phosphate glass using 248nm, 500fs laser radiation

Irini Michelakaki, Michalis Livitzis, and Stavros Pissadakis
CJ_22 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2007

Photosensitivity and Grating Recording in All-silica Standard and Microstructured Optical Fibres using 248nm, fs and ps Laser Radiation

Stavros Pissadakis, Georgios D. Tsibidis, and Michalis Livitziis
CM7_4 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2009

Inscription of Thermally Durable Type IIA Gratings in B/Ge-codoped Optical Fibres Using 248nm, 500fs Radiation

George Violakis, Maria Konstantaki, and Stavros Pissadakis
CTuY6 Conference on Lasers and Electro-Optics (CLEO:S&I) 2006

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved