Pulse-width modulation using an acousto-optic modulator

Author

McNeill, Mark D. ; Poon, Ting-chung ; Moore, Daniel

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

fYear

1994

fDate

20-22 Mar 1994

Firstpage

485

Lastpage

489

Abstract

The authors show how an acousto-optic modulator operating in the first Bragg regime can be configured to produce pulse-width modulated (PWM) signals. Specifically, a hybrid optical bistable operating as a threshold device is used to produce pulses whose width is proportional to the input signal´s amplitude. In addition, background information outlining the principles of acoustooptic interaction is included to provide sufficient understanding of Bragg cells. Both theoretical and experimental results are presented

Keywords

acousto-optical devices; acousto-optical effects; light diffraction; optical bistability; pulse width modulation; Bragg cells; PWM signals; acousto-optic modulator; acoustooptic interaction; first Bragg regime; hybrid optical bistable; input signal amplitude; pulse-width modulation; threshold device; Acoustic diffraction; Laboratories; Optical bistability; Optical diffraction; Optical modulation; Optical pulses; Optical refraction; Pulse modulation; Pulse width modulation; Space vector pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

System Theory, 1994., Proceedings of the 26th Southeastern Symposium on

Conference_Location

Athens, OH

ISSN

0094-2898

Print_ISBN

0-8186-5320-5

Type

conf

DOI

10.1109/SSST.1994.287828

Filename

287828