Photosensitive lead germanate glass waveguides grown by pulsed laser deposition
Photosensitive lead germanate glass waveguides grown by pulsed laser deposition
Photosensitivity in (predominantly) germanium doped fibres and planar waveguide structures is the subject of intense current interest. Permanent refractive index gratings, written using UV light from either pulsed or C.W. laser sources, can be produced by interferometric exposure, yielding Δ(n) values ranging from 10-5 to 10-3. Additional techniques such as hydrogen loading, or flame brushing, can further increase this value to ~10-2.
In this paper, we report our studies of planar waveguides of lead germanate glass, grown by Pulsed Laser Deposition. The films are grown under various partial pressures of oxygen, and show distinct and systematic differences in colour, waveguide loss and photosensitivity. We interpret our results in the context of induced oxygen vacancies produced during the growth.
Mailis, S.
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Riziotis, C.
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Wang, J.
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Taylor, E.R.
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Anderson, A.A.
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Barrington, S.J.
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Eason, R.W.
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Mailis, S.
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Riziotis, C.
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Wang, J.
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Taylor, E.R.
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Anderson, A.A.
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Barrington, S.J.
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Eason, R.W.
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Mailis, S., Riziotis, C., Wang, J., Taylor, E.R., Anderson, A.A., Barrington, S.J. and Eason, R.W.
(1998)
Photosensitive lead germanate glass waveguides grown by pulsed laser deposition.
Conference on Lasers and Electro-Optics/Europe '98, Glasgow, United Kingdom.
13 - 18 Sep 1998.
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Conference or Workshop Item
(Paper)
Abstract
Photosensitivity in (predominantly) germanium doped fibres and planar waveguide structures is the subject of intense current interest. Permanent refractive index gratings, written using UV light from either pulsed or C.W. laser sources, can be produced by interferometric exposure, yielding Δ(n) values ranging from 10-5 to 10-3. Additional techniques such as hydrogen loading, or flame brushing, can further increase this value to ~10-2.
In this paper, we report our studies of planar waveguides of lead germanate glass, grown by Pulsed Laser Deposition. The films are grown under various partial pressures of oxygen, and show distinct and systematic differences in colour, waveguide loss and photosensitivity. We interpret our results in the context of induced oxygen vacancies produced during the growth.
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- Author's Original
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e-pub ahead of print date: 1998
Venue - Dates:
Conference on Lasers and Electro-Optics/Europe '98, Glasgow, United Kingdom, 1998-09-13 - 1998-09-18
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 76662
URI: http://eprints.soton.ac.uk/id/eprint/76662
PURE UUID: 42230e7a-0506-4719-bdd5-cabd6819b370
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:33
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Contributors
Author:
S. Mailis
Author:
C. Riziotis
Author:
J. Wang
Author:
E.R. Taylor
Author:
A.A. Anderson
Author:
S.J. Barrington
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