Title :
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
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;
Conference_Titel :
System Theory, 1994., Proceedings of the 26th Southeastern Symposium on
Conference_Location :
Athens, OH
Print_ISBN :
0-8186-5320-5
DOI :
10.1109/SSST.1994.287828
