.~.~ Electrodes on or near the coupling region {1}
41
.~.~.~ Directional coupler
DEFINITION
Classification: 385/41
Directional coupler:
(under subclass 40) Subject matter wherein interconnected optical paths of a coupler are externally activated to enable input on a first optical path to be coupled only to a second optical path for optical beam transmission, and a received optical beam on a third optical path is coupled only to the first optical path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
42, for directional couplers which do not require an external electrical field stimulus for their operation.
