DocumentCode :
843842
Title :
Multichannel /spl plusmn/ 1.1-kV arbitrary waveform generator for beam steering using ferroelectric device
Author :
Muhammad, Fikri ; Chandramani, Premanand ; Ekman, Jeremy ; Kiamilev, Fouad ; Scrymgeour, David ; Gopalan, Venkatraman ; Moore, Eric ; Weiler, Margaret
Author_Institution :
Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE, USA
Volume :
14
Issue :
11
fYear :
2002
Firstpage :
1605
Lastpage :
1607
Abstract :
Ferroelectric devices are one of the options available for beam steering. Applying an electric field to a ferroelectric beam deflector controls the direction of the light that propagates through the device. Currently, these devices require relatively high-driving voltages. In this paper, we present an arbitrary waveform generator designed to provide the driving voltages needed. It has five independent output channels, each capable of producing an arbitrary /spl plusmn/ 1.1-kV signal at up to 10 kHz, with 10 mA of drive current. Our design can achieve a total deflection angle of 62.5/spl deg/ with a five-stage ferroelectric beam deflector. It has been tested driving a two-stage LiTaO/sub 3/ ferroelectric beam deflector achieving a total deflection angle of 25/spl deg/. With 16-bit resolution, the driver accurately controls the propagation path of the beam from the first-stage deflector to the second-stage deflector for further deflection. No commercial equipment is available to drive multistage ferroelectric beam-deflector devices. Our design provides a low-cost and compact solution that can be readily adapted for application and device specific requirements.
Keywords :
beam steering; driver circuits; electro-optical deflectors; ferroelectric devices; ferroelectric materials; field programmable gate arrays; lithium compounds; waveform generators; 1.1 kV; 10 mA; LiTaO/sub 3/; LiTaO/sub 3/ ferroelectric beam deflector; arbitrary waveform generator; beam steering; compact solution; deflection angle; drive current; driving voltages; electric field; ferroelectric beam deflector; ferroelectric device; five-stage ferroelectric beam deflector; high-driving voltages; independent output channels; light direction; multichannel kV arbitrary waveform generator; multistage ferroelectric beam-deflector devices; propagation path; second-stage deflector; total deflection angle; two-stage ferroelectric beam deflector; Aerospace electronics; Beam steering; Crystals; Ferroelectric materials; Lighting control; Optical propagation; Optical refraction; Signal generators; Very large scale integration; Voltage;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2002.803906
Filename :
1042017
Link To Document :
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