Title :
Optical beamsteering using integrated optical modulators
Author :
Jackson, S.M. ; Reed, G.T. ; Tang, C.K. ; Evans, A.G.R. ; Clark, J. ; Aveyard, C. ; Namavar, F.
Author_Institution :
Dept. of Electron. & Electr. Eng., Surrey Univ., Guildford, UK
fDate :
12/1/1997 12:00:00 AM
Abstract :
A device has been designed and fabricated to demonstrate the principle of using the interference pattern of a number of coherent optical sources to form and steer an optical beam. Steering of the beam can be accomplished by varying the relative phase of the constituent sources. The effect of relative source phase variation and source separation variation has beers considered and optimized using a multiple source interference model. In this case the constituent sources are the outputs of integrated optical waveguides, excited by a common optical source to maintain relative coherence. In order to demonstrate the principle of beamsteering, a device with two constituent sources (waveguides) has been fabricated, and the resultant output interference pattern has been laterally translated by varying the phase of the output of one waveguide with respect to the other, via a novel optical phase modulator
Keywords :
integrated optics; laser accessories; laser beams; light coherence; light sources; optical design techniques; optical fabrication; optical modulation; optical waveguides; phase modulation; coherent optical source; integrated optical modulators; integrated optical waveguides; interference pattern; multiple source interference model; optical beam formation; optical beamsteering; optical phase modulator; relative coherence; relative source phase variation; resultant output interference pattern; source separation variation; Coherence; Integrated optics; Interference; Optical beams; Optical design; Optical devices; Optical modulation; Optical waveguides; Phase modulation; Source separation;
Journal_Title :
Lightwave Technology, Journal of
