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 :
