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Simulation of A Low Loss Optical Modulator for Fabrication in Simox Material

Published online by Cambridge University Press:  25 February 2011

C K Tang ,
G T Reed ,
A J Walton  and
A G Rickman
C K Tang
Affiliation:
Department of Electronic & Electrical Engineering, University of Surrey, Guildford, Surrey, UK
G T Reed
Affiliation:
Department of Electronic & Electrical Engineering, University of Surrey, Guildford, Surrey, UK
A J Walton
Affiliation:
Department of Electronic & Electrical Engineering, University of Edinburgh, Edinburgh, UK
A G Rickman
Affiliation:
Departments of Electronic & Electrical Engineering and Physics, University of Surrey, Guildford, Surrey, UK
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Abstract

A novel phase modulator has been designed and analysed, assuming fabrication in a silicon-on-insulator material such as SIMOX. The proposed modulator is based upon a transverse p-i-n structure, utilising the plasma dispersion effect to produce the desired refractive index change in an optical rib waveguide. The device has been studied using the MEDICI two dimensional device simulation package to optimise the injected carrier interaction with the propagating optical mode. Whilst the device is designed to support a single optical mode, it measures several micrometers in cross sectional dimensions, thereby simplifying fabrication and allowing efficient coupling to other single mode devices such as optical fibers. Furthermore the device has an extremely high figure of merit, predicting over 200 degrees of induced phase shift per volt per mm. This implies a short active length together with a low power requirement.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 298: Symposium B – Silicon-Based Optoelectronic Materials , 1993 , 247
Copyright
Copyright © Materials Research Society 1993

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