Polarisation dependent optical modulation using the plasma effect in a GaAs-GaAlAs quantum well waveguide

H. K. Tsang; I. H. White

doi:10.1016/0030-4018(90)90219-J

Polarisation dependent optical modulation using the plasma effect in a GaAs-GaAlAs quantum well waveguide

H. K. Tsang, I. H. White

Vice Chancellor's Office

University of Cambridge

Research output: Contribution to journal › Article › peer-review

Abstract

Separately confined double quantum well AlGaAs-GaAs ridge waveguides have been operated as optical modulators using the plasma effect at a wavelength of 1.15 μm. We report on the observation of a polarisation dependence in the plasma effect caused by the quantum confinement in the TM direction. Interferometric measurements on devices with current confinement cross-sectional areas of 0.1 μm² yield phase modulation coefficients of 1.2°/mA for the TE polarisation and 0.3°/mA for the TM polarisation.

Original language	English
Pages (from-to)	365-369
Number of pages	5
Journal	Optics Communications
Volume	74
Issue number	6
DOIs	https://doi.org/10.1016/0030-4018(90)90219-J
Publication status	Published - 15 Jan 1990

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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title = "Polarisation dependent optical modulation using the plasma effect in a GaAs-GaAlAs quantum well waveguide",

abstract = "Separately confined double quantum well AlGaAs-GaAs ridge waveguides have been operated as optical modulators using the plasma effect at a wavelength of 1.15 μm. We report on the observation of a polarisation dependence in the plasma effect caused by the quantum confinement in the TM direction. Interferometric measurements on devices with current confinement cross-sectional areas of 0.1 μm2 yield phase modulation coefficients of 1.2°/mA for the TE polarisation and 0.3°/mA for the TM polarisation.",

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year = "1990",

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AU - White, I. H.

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N2 - Separately confined double quantum well AlGaAs-GaAs ridge waveguides have been operated as optical modulators using the plasma effect at a wavelength of 1.15 μm. We report on the observation of a polarisation dependence in the plasma effect caused by the quantum confinement in the TM direction. Interferometric measurements on devices with current confinement cross-sectional areas of 0.1 μm2 yield phase modulation coefficients of 1.2°/mA for the TE polarisation and 0.3°/mA for the TM polarisation.

AB - Separately confined double quantum well AlGaAs-GaAs ridge waveguides have been operated as optical modulators using the plasma effect at a wavelength of 1.15 μm. We report on the observation of a polarisation dependence in the plasma effect caused by the quantum confinement in the TM direction. Interferometric measurements on devices with current confinement cross-sectional areas of 0.1 μm2 yield phase modulation coefficients of 1.2°/mA for the TE polarisation and 0.3°/mA for the TM polarisation.

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U2 - 10.1016/0030-4018(90)90219-J

DO - 10.1016/0030-4018(90)90219-J

M3 - Article

AN - SCOPUS:0025209042

SN - 0030-4018

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EP - 369

JO - Optics Communications

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IS - 6

ER -

Polarisation dependent optical modulation using the plasma effect in a GaAs-GaAlAs quantum well waveguide

Abstract

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