Characterization of the light scattered from type IIA phase gratings

David Pureur; Gilbert Martinelli; Pascal Bernage; Pierre Niay; Marc Douay; E. Delevaque

doi:10.1117/12.258965

20 November 1996 Characterization of the light scattered from type IIA phase gratings

David Pureur, Gilbert Martinelli, Pascal Bernage, Pierre Niay, Marc Douay, E. Delevaque

Proceedings Volume 2841, Doped Fiber Devices; (1996) https://doi.org/10.1117/12.258965
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Far-field properties of the optical power scattered from type IIA gratings photowritten within high NA germanosilicate fibers have been studied under various experimental conditions. First, the evolution of the out- coupling efficiency has been recorded in the course of the grating inscription. This revealed that the scattered power from fiber Bragg gratings sharply increased at the time of arrival of the type IIA photosensitivity. More, the out- coupling efficiency and the reflectivity of the type IIA grating seem to have a similar behavior under a thermal annealing process of the grating. It is then shown that the optical power detected in the far-field is scattered around a cone centered on the fiber axis, with a non-induced azimuthal distribution. The features of the observed pattern can be explained only if the UV induced index change, at the origin of he increase in the scattering efficiency, is non uniformly distributed in a plane perpendicular to the fiber axis.

Citation Download Citation

David Pureur, Gilbert Martinelli, Pascal Bernage, Pierre Niay, Marc Douay, and E. Delevaque "Characterization of the light scattered from type IIA phase gratings", Proc. SPIE 2841, Doped Fiber Devices, (20 November 1996); https://doi.org/10.1117/12.258965

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