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Gratings in indium oxide film overlayers on ion-exchanged waveguides by excimer laser micromachining

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), pp. 694-696. (doi:10.1063/1.1345836).

Record type: Article


Relief Bragg gratings were imprinted by 248nm interferometric excimer laser ablation on potassium ion-exchanged channel waveguides in BK-7 glass overlaid with athin high-index InOx film. Using five pulses of energy density 60mJ/cm2, a spectral transmittance notch of depth 66% and Delta.lambda < 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: February 2001
Keywords: Integrated optics, Waveguides, Gratings, Optical filters, Micromachining
Organisations: Optoelectronics Research Centre


Local EPrints ID: 260371
ISSN: 0003-6951
PURE UUID: 0503e4e4-c03d-4b16-b3b1-66dead6f543d
ORCID for J.S. Wilkinson: ORCID iD

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Date deposited: 26 Jan 2005
Last modified: 18 Jul 2017 09:13

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Author: S. Pissadakis
Author: L. Reekie
Author: M.N. Zervas
Author: J.S. Wilkinson ORCID iD
Author: G. Kiriakidis

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