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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Resonant wavelength control of a 1.3um microcavity by intracavity steam oxidation

Macaluso, R. and Robert, F. and Bryce, A.C. and Calvez, S. and Dawson, M.D. (2003) Resonant wavelength control of a 1.3um microcavity by intracavity steam oxidation. Semiconductor Science and Technology, 18 (2). L12-L15. ISSN 0268-1242

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Abstract

We report a multi-wavelength passive filter working in the 1.3 μm range, fabricated by a post-growth technique based on the combined lateral-vertical steam oxidation of AlGaAs layers within a microcavity. Wafers are photolithographically patterned and etched through the top to create mesa structures which are oxidized from both edges, and control of resonant wavelength is achieved through mesa width, thickness and compositional control of intracavity layers to be oxidized, and oxidation conditions. Microreflectivity measurements of the processed devices show that in this wavelength range it is possible using this approach to control the resonant wavelength over a range of about 52 nm.