US PATENT SUBCLASS 385 / 16
.~ Switch (i.e., switching from one terminal to another, not modulation)

Current as of: June, 1999
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385 /   HD   OPTICAL WAVEGUIDES

15  DF  WITH OPTICAL COUPLER {8}
16.~ Switch (i.e., switching from one terminal to another, not modulation) {6}
17  DF  .~.~> Matrix switch (i.e., M X N, where M and N are 3 or more)
18  DF  .~.~> Reflective-type switch
19  DF  .~.~> Stationary waveguides with movable opaque element
20  DF  .~.~> Multiple pole multiple throw {1}
22  DF  .~.~> Single pole multiple throw (relay switch)
23  DF  .~.~> Single pole single throw

DEFINITION

Classification: 385/16

Switch (i.e., switching from one terminal to another, not modulation):

(under subclass 15) Subject matter wherein the output of an optical waveguide is selectively coupled to the input of a different optical waveguide.

(1) Note. These couplings are not necessarily physically connected.

(2) Note. This subclass is for switching without any specifically mentioned computation or modulation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

41, and 42, for directional couplers which could be employed as switches and subclasses 4+ for directional optical modulation in waveguides (e.g., for scanning).

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers, appropriate subclasses for electrical switches. 310, Electrical Generator or Motor Structure,

310+, for piezoelectric elements and devices.

348, Television,

197, for optical scanning with fiber optics.

359, Optics: Systems (Including Communication) and Elements,

115+, for an optical multiplex communication system which may include an optical waveguide and switch; subclasses 107+ for switching utilized in optical compu-tation; and subclass 618 for light divid-ing and combining arrangements utiliz-ing single channel to/from plural chan-nels.