Gratings in indium oxide film overlayers on ion-exchanged waveguides by excimer laser micromachining
Gratings in indium oxide film overlayers on ion-exchanged waveguides by excimer laser micromachining
Relief Bragg gratings were imprinted by 248nm interferometric excimer laser ablation on potassium ion-exchanged channel waveguides in BK-7 glass overlaid with a thin high-index InOx film. Using five pulses of energy density 60mJ/cm2, a spectral transmittance notch of depth 66% and Δλ < 0.1nm was obtained at 1547nm in the TE polarisation for a waveguide having a nominal width of 8µm and a 135nm thick InOx overlayer. In waveguides coated with 100nm InOx, with widths increasing from 3µm to 8µm, the reflection wavelength shifted by 0.12nm/µm and the reflectivity increased monotonically.
Integrated optics, Waveguides, Gratings, Optical filters, Micromachining
694-696
Pissadakis, S.
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Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Zervas, M.N.
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Wilkinson, J.S.
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Kiriakidis, G.
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2 February 2001
Pissadakis, S.
a91c54e0-3b8d-479f-b44e-e678bc34a277
Reekie, L.
ec314137-6924-44ad-86a4-ff3f9a67c1b5
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Wilkinson, J.S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Kiriakidis, G.
20ecc498-cfab-40d6-b506-10d4dba09422
Pissadakis, S., Reekie, L., Zervas, M.N., Wilkinson, J.S. and Kiriakidis, G.
(2001)
Gratings in indium oxide film overlayers on ion-exchanged waveguides by excimer laser micromachining.
Applied Physics Letters, 78 (6), .
(doi:10.1063/1.1345836).
Abstract
Relief Bragg gratings were imprinted by 248nm interferometric excimer laser ablation on potassium ion-exchanged channel waveguides in BK-7 glass overlaid with a thin high-index InOx film. Using five pulses of energy density 60mJ/cm2, a spectral transmittance notch of depth 66% and Δλ < 0.1nm was obtained at 1547nm in the TE polarisation for a waveguide having a nominal width of 8µm and a 135nm thick InOx overlayer. In waveguides coated with 100nm InOx, with widths increasing from 3µm to 8µm, the reflection wavelength shifted by 0.12nm/µm and the reflectivity increased monotonically.
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Published date: 2 February 2001
Keywords:
Integrated optics, Waveguides, Gratings, Optical filters, Micromachining
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 260371
URI: http://eprints.soton.ac.uk/id/eprint/260371
ISSN: 0003-6951
PURE UUID: 0503e4e4-c03d-4b16-b3b1-66dead6f543d
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Date deposited: 26 Jan 2005
Last modified: 15 Mar 2024 02:42
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Author:
S. Pissadakis
Author:
L. Reekie
Author:
M.N. Zervas
Author:
G. Kiriakidis
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