DocumentCode
1123205
Title
Voltage-controlled optical/RF phase shifter
Author
Soref, Richard A.
Author_Institution
USAF Rome Laboratories, Hanscom Air Force Base, MA, USA
Volume
3
Issue
5
fYear
1985
fDate
10/1/1985 12:00:00 AM
Firstpage
992
Lastpage
998
Abstract
A new fiber-optic device designed to steer the radiation beam of a phased-array antenna has been demonstrated. A radiofrequency (RF) signal at 125 MHz is generated via photomixing at the output of a single-mode fiber-optic interferometer. The phase of the electrical signal is shifted over several cycles in direct proportion to a voltage applied to an optical controller. The controller consists of a Pockels-type optical phase modulator located in one arm of the heterodyne interferometer. Rapid changes in RF phase are feasible. A miniature low-voltage version of the device, based upon integrated optics, is proposed.
Keywords
Optical fiber applications; Phased arrays; Optical control; Optical fiber devices; Optical interferometry; Optical mixing; Optical modulation; Phase shifters; RF signals; Radio frequency; Signal generators; Voltage;
fLanguage
English
Journal_Title
Lightwave Technology, Journal of
Publisher
ieee
ISSN
0733-8724
Type
jour
DOI
10.1109/JLT.1985.1074305
Filename
1074305
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