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Modelling of the effects of thermal gradients on optical propagation in polymer multimode tapered waveguides in optical backplanes

Rashed, A.M.; Selviah, D.R.; (2004) Modelling of the effects of thermal gradients on optical propagation in polymer multimode tapered waveguides in optical backplanes. Photonics North 2004: Software and Modelling in Optics , 5579 (1 & 2) pp. 359-366. Green open access

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Abstract

Finite difference beam propagation modelling (FD-BPM) calculates the effect of thermal gradients in an optical backplane on the optical field propagation in a polymer multimode linearly tapered waveguide. Compared to straight waveguides, tapered entrances offer improved power coupling for a wide range of optical source lateral offset misalignments. However, surface temperature gradients of 0.5 degrees C/um across the taper were found to degrade this benefit due to the thermo-optic effect of the polymer. Higher surface temperature gradients improve power coupling in two discrete ranges of lateral source offset but the original tolerance to a wide range of source offsets is not recovered.

Type: Article
Title: Modelling of the effects of thermal gradients on optical propagation in polymer multimode tapered waveguides in optical backplanes
ISBN: 0277-786X
Open access status: An open access version is available from UCL Discovery
Language: English
Keywords: Polymer multimode tapered waveguide, optical backplane, thermal gradient, FD-BPM, source misalignment
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/2963
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