Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Ultraviolet-enhanced photosensitivity in cerium-doped aluminosilicate fibers and glasses through high-pressure hydrogen loading

Not Accessible

Your library or personal account may give you access

Abstract

We have studied the photosensitivity of both hydrogen-loaded and unloaded Ce3+-doped aluminosilicate fibers. Refractive-index changes as great as 1.5×10-3 have been achieved in the treated samples. The thermal stability of gratings appears to depend not on whether the fiber is treated but rather on the UV cumulative fluence used for the inscription. The change in refractive index follows a power law dependence on exposure time and does not saturate for exposure times as long as 2 h. In contrast, the changes in the absorption spectra saturate after a few seconds of exposure time. This observation and others that we report show that the color-center model does not fully explain the refractive-index change. As is observed in germanosilicate fibers, exposure of the hydrogen-loaded fiber to UV light increases the hydroxyl content according to a power law dependence as a function of time. This shows that enhancement of the fiber’s photosensitivity is strongly related to hydrogen-assisted bond breaking within the glass network. Microscopic inspections of gratings written in the cores of hydrogen-loaded preforms have shown corrugations embedded in a valley. The depth of the valley and the heights of the corrugations are more important in the hydrogen-loaded sample than in the case of an unloaded preform. This difference is closely correlated with the enhancement of the fiber’s photosensitivity.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Analysis of color-center-related contribution to Bragg grating formation in Ge:SiO2 fiber based on a local Kramers–Kronig transformation of excess loss spectra

Bruno Leconte, Wen-Xiang Xie, Marc Douay, Pascal Bernage, Pierre Niay, Jean François Bayon, Eric Delevaque, and Hubert Poignant
Appl. Opt. 36(24) 5923-5930 (1997)

Photosensitivity and stress changes of Ge-free Bi-Al doped silica optical fibers under ArF excimer laser irradiation

Christian Ban, Hans G. Limberger, Valery Mashinsky, and Evgeny Dianov
Opt. Express 19(27) 26859-26865 (2011)

Index structure of fiber Bragg gratings in Ge–SiO2 fibers

Tsung-Ein Tsai, Glen M. Williams, and E. Joseph Friebele
Opt. Lett. 22(4) 224-226 (1997)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


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