DocumentCode :
1106765
Title :
Single-mode optical waveguides and phase modulators in the InP material system
Author :
Donnelly, J.P. ; Demeo, N.L. ; Leonberger, F.J. ; Groves, S.H. ; Vohl, P. ; O´Donnell, F.J.
Author_Institution :
Massachusetts Institute of Technology, Lexington, MA, USA
Volume :
21
Issue :
8
fYear :
1985
fDate :
8/1/1985 12:00:00 AM
Firstpage :
1147
Lastpage :
1151
Abstract :
The characteristics of several different single-mode optical waveguides in the InP material system are discussed. Slab-coupled rib waveguides in GaInAsP ( 
m) epitaxial layers grown on InP have shown propagation losses as low as 1.7 cm-1at 1.3 μm and 2.7 cm-1at 1.15 μm. Oxide-confined InP rib guides fabricated using a lateral overgrowth technique have losses of about 1.5 cm-1at 1.15 μm. Three-guide couplers have been made by fabricating three parallel oxide-confined guides in close proximity. InP p+-n-n+ guides capable of modulating TE-polarized radiation have been fabricated using epitaxial techniques and Be-ion implantation. By measuring the phase difference between the TE-like and TM-like modes as a function of applied voltage, an estimate of the r41 electrooptic coefficient in InP at 1.3 μm that is in good agreement with a previously reported value was obtained. Guides of this type should find use as the active components in InP switches and interferometers.
m) epitaxial layers grown on InP have shown propagation losses as low as 1.7 cm-1at 1.3 μm and 2.7 cm-1at 1.15 μm. Oxide-confined InP rib guides fabricated using a lateral overgrowth technique have losses of about 1.5 cm-1at 1.15 μm. Three-guide couplers have been made by fabricating three parallel oxide-confined guides in close proximity. InP p+-n-n+ guides capable of modulating TE-polarized radiation have been fabricated using epitaxial techniques and Be-ion implantation. By measuring the phase difference between the TE-like and TM-like modes as a function of applied voltage, an estimate of the rKeywords :
Indium materials/devices; Optical polarization; Optical strip waveguides; Phase modulation; Couplers; Epitaxial layers; Indium phosphide; Optical interferometry; Optical materials; Optical modulation; Optical waveguides; Phase measurement; Phase modulation; Propagation losses;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1985.1072804
Filename :
1072804
Link To Document :
