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Universal method to determine the thermo-optic coefficient of optical waveguide layer materials using a dual slab waveguide.

Cross, G. H. and Cassidy, D. J. (2007) 'Universal method to determine the thermo-optic coefficient of optical waveguide layer materials using a dual slab waveguide.', Applied physics letters., 91 (14). p. 141914.

Abstract

A dual slab waveguide device method for determining the thermo-optic coefficient of waveguide layer materials is demonstrated. Temperature change-induced optical path length imbalance between two single slab waveguide modes provides the primary mechanism for detection. The waveguide mode output field phase change differences are encoded in shifts in the far field interference pattern. To illustrate the method, the thermo-optic coefficients of two In1−xGaxAsyP1−y quaternary alloys, 1.3Q and 1.15Q, are measured at a wavelength of 1.55 µm and at a center temperature of 25.2 °C. Their ratio is in excellent agreement with previous work, in accordance with optical dispersion models.

Item Type:Article
Full text:PDF - Published Version (115Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1063/1.2795340
Publisher statement:Copyright (2007) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. Cross, G. H. and Cassidy, D. J. (2007) 'Universal method to determine the thermo-optic coefficient of optical waveguide layer materials using a dual slab waveguide.', Applied physics letters., 91 (14). p. 141914. and may be found at http://dx.doi.org/10.1063/1.2795340
Record Created:18 Jan 2008
Last Modified:27 Apr 2011 10:59

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