US PATENT SUBCLASS 359 / 326
OPTICAL FREQUENCY CONVERTER

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

326OPTICAL FREQUENCY CONVERTER {5}
327  DF  .~> Raman type
328  DF  .~> Harmonic generator {1}
330  DF  .~> Parametric oscillator
331  DF  .~> Optical laser acoustic delay line type
332  DF  .~> Dielectric optical waveguide type

DEFINITION

Classification: 359/326

OPTICAL FREQUENCY CONVERTER:

(under the class definition) Subject matter wherein a nonlinear device alters the frequency of an applied traversing optical electromagnetic wave.

(1) Note. The frequencies here are quasi-optical (i.e., infrared through ultraviolet).

(2) Note. Such optical frequency devices include second harmonic generators and other types of frequency conversion devices such as downshifters, oscillators, mixers, etc.

(3) Note. A detailed optical frequency converter, per se, or such subject matter in combination with additional waveguide structure is classified in this class (359). However, the nominal recitation of any type of optical frequency converter together with additional waveguide structure is classified in Class 385, where such combination meets the class requirements.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

424, for a nonoptical parametric frequency converter. 327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

113+, for miscellaneous frequency control.