Models for the radiation-induced attenuation in pure silica optical fibers: spectral dependencies and absorption band kinetics

Paul Borgermans; Benoit Brichard; Marc C. Decreton

doi:10.1117/12.454377

28 January 2002 Models for the radiation-induced attenuation in pure silica optical fibers: spectral dependencies and absorption band kinetics

Paul Borgermans, Benoit Brichard, Marc C. Decreton

Author Affiliations +

Proceedings Volume 4547, Photonics for Space and Radiation Environments II; (2002) https://doi.org/10.1117/12.454377
Event: International Symposium on Remote Sensing, 2001, Toulouse, France

Abstract

Over the past years, various attempts have been made to accurately model the radiation response of the optical attenuation in optical fibres for nuclear environments. In this paper we present the results of a study on pure silica fibres where both the spectral and kinetic behaviour are explored during and after irradiation in spent fuel gamma facilities. Basic first- and second-order kinetic models are considered, as they provide insight into fundamental dependencies on temperature and dose-rate. Other popular models, like the power-law and stretched exponential forms of the basic kinetic paradigms, are investigated with emphasis on the spectral dependence of the constituting parameters. Since the radiation induced attenuation is in general the sum of contributions from different absorption bands, related to underlying radiation induced defects, the spectral dependencies are also tackled by Gaussian resolution. With this method, the recorded absorption spectra in the range from 450 to 1600 nm are decomposed into individual absorption bands, with fixed positions and widths in the photon-energy domain for the course of the experiments. The resulting amplitudes from the non-linear estimation process are then evaluated with respect to the same models used as for the radiation induced attenuation at single wavelengths.

Citation Download Citation

Paul Borgermans, Benoit Brichard, and Marc C. Decreton "Models for the radiation-induced attenuation in pure silica optical fibers: spectral dependencies and absorption band kinetics", Proc. SPIE 4547, Photonics for Space and Radiation Environments II, (28 January 2002); https://doi.org/10.1117/12.454377

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available