Acousto-optic devices
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United States of America Patent
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Feb 22, 2011
Grant Date -
Nov 19, 2009
app pub date -
May 10, 2007
filing date -
May 30, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An acousto-optic module is provided, including a number of partially coupled optical resonators distributed within a dielectric medium and at least one acoustic transducer mounted on a surface of the dielectric medium for injecting an acoustic wave into the optical resonators so as to diffract light passing therethrough by means of Bragg diffraction. This acousto-optic module has been applied in particular to an improved tuneable optical filter in which an acoustic shear wave is generated and which travels through the acousto-optic module in a direction substantially parallel with a polarized light signal passing therethrough. The acousto-optic module is also applied to an improved optical frequency shifter.
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