Light propagation, optical modulation, and beam steering in waveguides with quantum well voltage tunable claddings
作者:
Alex Harwit,
R. Fernandez,
D. K. Kinell,
W. D. Eades,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 66,
issue 5
页码: 541-543
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.114006
出版商: AIP
数据来源: AIP
摘要:
We present results on devices fabricated in a waveguide system utilizing a voltage tunable quantum well cladding layer. A (GaAs/AlGaAs) beam steering device produced an angular shift of 2.4° under an applied voltage of 20 V. It is shown numerically that electro‐optic modulators fabricated in such a material configuration can have simultaneously improved contrast ratios and insertion losses if the ratio of light propagating in the cladding and in the core regions can be controlled. A proof of concept device is demonstrated in which an electric field is used to change the distribution of light propagating in the waveguide. ©1995 American Institute of Physics.
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