Optical waveguides – Directional optical modulation within an optical waveguide – Acousto-optic
Reexamination Certificate
2005-09-27
2005-09-27
Epps, Georgia (Department: 2873)
Optical waveguides
Directional optical modulation within an optical waveguide
Acousto-optic
C385S027000, C385S028000
Reexamination Certificate
active
06950566
ABSTRACT:
A method to reduce optical intensity modulation is described that involves generating a spiraling wave onto an acoustic-optic interaction portion of an optical fiber within an acousto-optic filter in order to create reflected waves that are orthogonal with respect to waves that are originally launched onto the interaction portion. A transducer is described having a first section and a second section. The first and second sections each have a polling direction along a first axis. The transducer also has a third section and a fourth section. The third and fourth sections each have a polling direction along a second axis. The third and fourth sections are each between the first and second sections. An acousto-optic filter having a horn with an elliptical cross section coupled to a transducer is also described. A transducer for an excitation element capable of launching spiraling acoustic waves is described.
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Hwang In-Kag
Kim Hyo-Sang
Rhy Hee-Yeal
Sorin Wayne Victor
Yun Seok-Hyun
Blakely , Sokoloff, Taylor & Zafman LLP
Epps Georgia
Hasan M.
Novera Optics, Inc.
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