Acousto-optic devices having an acoustic attenuator structure
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United States of America Patent
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Feb 27, 2001
Grant Date -
N/A
app pub date -
Jan 28, 2000
filing date -
Jul 31, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed is an acousto-optic device having a number of acoustic attenuating structures and a method to limit the parasitic effects of a surface acoustic wave. The structures include any combination of the following: surrounding the acousto-optic conversion region with acoustic absorber, placing acoustic absorber near to the transducer(s), placing a strip of acoustic absorber between optical waveguides formed in the device, shaping one or more ends of acoustic waveguides formed in the device to absorb energy from the transducer(s), and/or extending the acoustic waveguides to further limit irradiation of unguided acoustic waves.
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