(under subclass 333) Subject matter wherein amplification is produced within the optical fiber by the interaction of externally applied energy and a unique property of the fiber (e.g., lasing material).
(1) Note. The details of an optical amplifier within an optical waveguide or combination with additional external waveguide structure are classified in this subclass.
(2) Note. Optical waveguides or fibers having the amplification performed within the waveguide of fiber are classified in this subclass.
(3) Note. Class 385 contains patents claiming optical modulation within the fiber but optical amplification (subclasses 333+) or frequency translation (subclasses 326+) within the fiber are specifically excluded from Class 385, unless the amplifier or frequency translator are only nominally set forth.
SEE OR SEARCH THIS CLASS, SUBCLASS:
332, for optical waveguides which produce frequency translation.
SEE OR SEARCH CLASS
385, Optical Waveguides, 1+, for temporal modulation performed within the optical waveguides and subclasses 4+ for directional modulation performed within the optical waveguide.
