Optical: systems and elements – Optical modulator – Light wave directional modulation
Patent
1996-11-26
1998-03-03
Font, Frank G.
Optical: systems and elements
Optical modulator
Light wave directional modulation
359308, G00F 133
Patent
active
057241791
ABSTRACT:
In an acousto-optic filter, a channel type optical waveguide is fabricated on a substrate. First and second surface acoustic wave transducers are mounted on the optical waveguide, respectively, in correspondence with input and output terminals thereof to transduce first and second surface acoustic waves. First and second polarization converters respectively convert only a specific wavelength component of first linearly polarized light excited at the input terminal of the optical waveguide through interaction of the first surface acoustic wave into second linearly polarized light perpendicular to the first linearly polarized light, and only a specific wavelength component of second linearly polarized light obtained by conversion of the first polarization converter through interaction of the second surface acoustic wave generated by the second surface acoustic wave transducer into first linearly polarized light. The first polarization converter has a first interacting region where the first surface acoustic wave and the first linearly polarized light interact. The second polarization converter has a second interacting region, having a length different from the first interacting region, where the second surface acoustic wave and the second linearly polarized light interact.
REFERENCES:
patent: 5329397 (1994-07-01), Chang
patent: 5400171 (1995-03-01), Song
patent: 5452314 (1995-09-01), Aronson
patent: 5455877 (1995-10-01), Baran et al.
"Two Stage Integrated-Optic Acoustically Tunable Optical Filter with Enhanced Sidelobe Suppression", Electronics Letters vol. 25, No. 6, pp. 398-399, Mar. 1989.
Font Frank G.
NEC Corporation
Smith Zandra V.
LandOfFree
Acousto-optic filter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acousto-optic filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acousto-optic filter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2254057