DocumentCode
1093934
Title
Electrooptic gigahertz light-pipe modulator for CO2 laser wavelength
Author
Scholtz, Awad L. ; Leeb, Walter R. ; Bonek, Ernst
Author_Institution
Technische Universität Wien, Austria
Volume
18
Issue
6
fYear
1982
fDate
6/1/1982 12:00:00 AM
Firstpage
1021
Lastpage
1029
Abstract
We have built a traveling-wave electrooptic modulator for 10.6 μm where the optical beam propagates in a highly oversized waveguide. Three CdTe-crystals measuring 
mm3each are cascaded to yield an aspect ratio of 131. Velocity matching between optical and modulating waves and a line impedance of 100 Ω are achieved by proper choice of dielectric embedding and of electrode width. Measured characteristics are: optical transmission 96 percent, maximum input VSWR 1.25:1, half-wave voltage 450 V, and frequency response ±1.1 dB over a 0.006-1 GHz range.
mm3each are cascaded to yield an aspect ratio of 131. Velocity matching between optical and modulating waves and a line impedance of 100 Ω are achieved by proper choice of dielectric embedding and of electrode width. Measured characteristics are: optical transmission 96 percent, maximum input VSWR 1.25:1, half-wave voltage 450 V, and frequency response ±1.1 dB over a 0.006-1 GHz range.Keywords
Cadmium materials/devices; Carbon dioxide lasers; Electrooptic modulation; Optical strip waveguide components; Traveling-wave devices; Dielectric measurements; Electrodes; Electrooptic modulators; Electrooptical waveguides; Frequency measurement; Impedance; Optical beams; Optical modulation; Optical propagation; Optical waveguides;
fLanguage
English
Journal_Title
Quantum Electronics, IEEE Journal of
Publisher
ieee
ISSN
0018-9197
Type
jour
DOI
10.1109/JQE.1982.1071634
Filename
1071634
Link To Document