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Exploration of self-writing and photosensitivity in ion-exchanged waveguides

Exploration of self-writing and photosensitivity in ion-exchanged waveguides
Exploration of self-writing and photosensitivity in ion-exchanged waveguides
We have demonstrated that self-written channel waveguides can be formed reproducibly in K+-ion-exchanged Nd-doped Bk7 glass by making use of a photosensitive index change of ~6 x 10-5 induced by illumination at 457 nm. The guidance characteristics of these waveguides have been investigated from 457 to 1550 nm. Detailed experiments have been carried out by exploration of the self-writing process, and these are also used to investigate the photosensitivity of the material. We find that an intensity threshold exists below which photosensitivity does not occur. Numerical simulations of both the evolution and the guidance properties of the self-written waveguides provide excellent agreement with observations.
0740-3224
1317-1325
Ljungström, Ami M.
22b9d2ff-2a39-4539-bbcc-11de018828b8
Monro, Tanya M.
20e60474-c0f6-4c5e-af89-e8bd3c6fc43c
Ljungström, Ami M.
22b9d2ff-2a39-4539-bbcc-11de018828b8
Monro, Tanya M.
20e60474-c0f6-4c5e-af89-e8bd3c6fc43c

Ljungström, Ami M. and Monro, Tanya M. (2003) Exploration of self-writing and photosensitivity in ion-exchanged waveguides. Journal of the Optical Society of America B, 20 (6), 1317-1325. (doi:10.1364/JOSAB.20.001317).

Record type: Article

Abstract

We have demonstrated that self-written channel waveguides can be formed reproducibly in K+-ion-exchanged Nd-doped Bk7 glass by making use of a photosensitive index change of ~6 x 10-5 induced by illumination at 457 nm. The guidance characteristics of these waveguides have been investigated from 457 to 1550 nm. Detailed experiments have been carried out by exploration of the self-writing process, and these are also used to investigate the photosensitivity of the material. We find that an intensity threshold exists below which photosensitivity does not occur. Numerical simulations of both the evolution and the guidance properties of the self-written waveguides provide excellent agreement with observations.

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More information

Published date: 2003
Additional Information: See also: Erratum, Vol.20(12) pp.2576 doi:10.1364/JOSAB.20.002576

Identifiers

Local EPrints ID: 30227
URI: http://eprints.soton.ac.uk/id/eprint/30227
ISSN: 0740-3224
PURE UUID: 1c2a7ff4-a53a-46a6-81c9-e2d7a970e175

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Date deposited: 11 May 2006
Last modified: 08 Jan 2022 06:54

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Contributors

Author: Ami M. Ljungström
Author: Tanya M. Monro

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