Optical waveguides – With optical coupler – Particular coupling structure
Patent
1991-09-03
1993-02-09
Healy, Brian
Optical waveguides
With optical coupler
Particular coupling structure
385 11, 385 14, 385 16, 385130, 385131, G02B 610
Patent
active
051858304
ABSTRACT:
An optical control device such as an optical switch includes two waveguides formed in an electrooptical substrate. Two control electrodes are preferably formed respectively above the two waveguides through a buffer layer. The optical control device is further provided with additional electrodes formed where there is no waveguide therebelow. The additional electrodes are connected with either of the two control electrodes, so that there generates an electric field not only in the direction vertical to the surface of the substrate but in the direction parallel to the surface thereof.
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Healy Brian
NEC Corporation
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