Direct UV written waveguides and Bragg gratings in doped planar silica using a 213nm laser
Direct UV written waveguides and Bragg gratings in doped planar silica using a 213nm laser
In this paper, the first demonstration of simultaneous UV written Bragg gratings and waveguides in germanium and boron‐doped planar silica is presented using a 5th harmonic solid‐state nanosecond laser operating at 213 nm wavelength. The fabrication of high‐quality gratings by using a high peak power density, yielding sufficient uniformity and without any surface damage is demonstrated. The photosensitivity of the doped silica layer is investigated by measuring the local effective refractive index of the optical modes. The written gratings are used to measure grating refractive index modulation, grating detuning bandwidth and the waveguide propagation loss with a minimum value of 0.28 ± 0.07 dB cm−1. This paper shows that this new generation of pulsed UV lasers is a promising alternative for conventional longer wavelength CW laser sources used in small spot direct grating writing in doped silica.
331-333
Ahmed, Qazi
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Gow, Paul C.
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Holmes, Christopher
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Mennea, Paolo
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Field, James
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Bannerman, Rex
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Smith, Devin H.
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Gawith, Corin
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Smith, Peter G.R.
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Gates, James C.
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2 April 2021
Ahmed, Qazi
2a627fc7-aca4-4380-85d8-90349bbf9e2b
Gow, Paul C.
193394b1-fe2d-41de-a9aa-6de7e5925b18
Holmes, Christopher
16306bb8-8a46-4fd7-bb19-a146758e5263
Mennea, Paolo
d994ba05-bcc1-4be3-8ba1-439fb1535a3f
Field, James
87ce1146-333d-489c-839d-b6f654049abc
Bannerman, Rex
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Smith, Devin H.
49156a41-41f1-4f1b-8ce3-ef6f894e190c
Gawith, Corin
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Smith, Peter G.R.
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Gates, James C.
b71e31a1-8caa-477e-8556-b64f6cae0dc2
Ahmed, Qazi, Gow, Paul C., Holmes, Christopher, Mennea, Paolo, Field, James, Bannerman, Rex, Smith, Devin H., Gawith, Corin, Smith, Peter G.R. and Gates, James C.
(2021)
Direct UV written waveguides and Bragg gratings in doped planar silica using a 213nm laser.
Electronics Letters, 57 (8), .
(doi:10.1049/ell2.12126).
Abstract
In this paper, the first demonstration of simultaneous UV written Bragg gratings and waveguides in germanium and boron‐doped planar silica is presented using a 5th harmonic solid‐state nanosecond laser operating at 213 nm wavelength. The fabrication of high‐quality gratings by using a high peak power density, yielding sufficient uniformity and without any surface damage is demonstrated. The photosensitivity of the doped silica layer is investigated by measuring the local effective refractive index of the optical modes. The written gratings are used to measure grating refractive index modulation, grating detuning bandwidth and the waveguide propagation loss with a minimum value of 0.28 ± 0.07 dB cm−1. This paper shows that this new generation of pulsed UV lasers is a promising alternative for conventional longer wavelength CW laser sources used in small spot direct grating writing in doped silica.
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Accepted/In Press date: 11 February 2021
e-pub ahead of print date: 2 March 2021
Published date: 2 April 2021
Identifiers
Local EPrints ID: 447140
URI: http://eprints.soton.ac.uk/id/eprint/447140
ISSN: 0013-5194
PURE UUID: 74f2ccc8-0a8d-44a9-bce4-6f104ccce9c8
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Date deposited: 04 Mar 2021 17:31
Last modified: 17 Mar 2024 03:28
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Author:
Qazi Ahmed
Author:
James Field
Author:
Devin H. Smith
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