Optical Waveguides In GaAlAs/GaAs And GalnAs/InP Multiquantum Well Structures

1990 ◽  
Author(s):  
B L. Weiss ◽  
A C. Wismayer ◽  
N J. Whitehead ◽  
W P. Gillin
Keyword(s):  
Optical Waveguides ◽  
Multiquantum Well

Optical Waveguides in GaAs/AlGaAs MQW Structures Formed by Silicon Induced Quantum Well Mixing

1989 ◽  
Vol 152 ◽  
Author(s):  
A. C. Wismayer ◽  
B. L. Weiss ◽  
J. S. Roberts
Keyword(s):  
Quantum Well ◽  
Annealing Time ◽  
Optical Waveguides ◽  
Propagation Loss ◽  
Mode Propagation ◽  
Furnace Annealing ◽  
Te Mode ◽  
Multiquantum Well

ABSTRACTSi implantation followed by furnace annealing has been used to produce the mixing of GaAs/AlGaAs multiquantum well (MQW) structures grown by MOVPE. Masked implants have been used to fabricate stripe optical waveguides. Results are presented here for the effect of the ion dose and the annealing time and it is shown that complete mixing occurs for a 1015 cm−2 dose of 500 keV Si+ after annealing at 750 °C for two hours. Waveguides fabricated using this process showed a minimum TE mode propagation loss of 33 dB cm−1 at a wavelength of 1.15 μm.

TEM characterization of proton-exchanged LiNbO3 optical waveguides

1986 ◽  
Vol 44 ◽  
pp. 480-481
Author(s):  
W. E. Lee
Keyword(s):  
Refractive Index ◽  
Benzoic Acid ◽  
Optical Waveguides ◽  
Total Internal Reflection ◽  
Index Of Refraction ◽  
Optical Measurements ◽  
Lithium Ions ◽  
Wide Channel ◽  
Tem Characterization

An optical waveguide consists of a several-micron wide channel with a slightly different index of refraction than the host substrate; light can be trapped in the channel by total internal reflection.Optical waveguides can be formed from single-crystal LiNbO3 using the proton exhange technique. In this technique, polished specimens are masked with polycrystal1ine chromium in such a way as to leave 3-13 μm wide channels. These are held in benzoic acid at 249°C for 5 minutes allowing protons to exchange for lithium ions within the channels causing an increase in the refractive index of the channel and creating the waveguide. Unfortunately, optical measurements often reveal a loss in waveguiding ability up to several weeks after exchange.

Intrinsic mode theory of tapered optical waveguides

1985 ◽  
Vol 132 (6) ◽  
pp. 314 ◽  
Author(s):  
J.M. Arnold ◽  
A. Belghoraf ◽  
A. Dendane
Keyword(s):  
Optical Waveguides ◽  
Mode Theory

Ray analysis of W-type slab optical waveguides with core distortions

1975 ◽  
Vol 11 (22) ◽  
pp. 534
Author(s):  
Shojiro Kawakami ◽  
Shigeo Nishida
Keyword(s):  
Optical Waveguides

Waisted-rib optical waveguides in GaAs

1980 ◽  
Vol 16 (11) ◽  
pp. 440 ◽  
Author(s):  
D.N. MacFadyen ◽  
C.R. Stanley ◽  
C.D.W. Wilkinson
Keyword(s):  
Optical Waveguides

InGaAsP/InP multiquantum-well structure grown by MOCVD

1985 ◽  
Vol 21 (4) ◽  
pp. 164 ◽  
Author(s):  
M. Morisaki ◽  
M. Ogura ◽  
N. Hase ◽  
T. Kajiwara
Keyword(s):  
Multiquantum Well
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