(under subclass 189) Subject matter which further includes one or more transparent elongated structures (e.g., rods, fibers, or pipes) which are used to transmit light waves from one point to another within the confines of their outer surface by means of internal reflections or modal transmission.
(1) Note. An optical waveguide requires total internal reflection.
(2) Note. The combination of an optical receiver with an optical waveguide as defined in Class 385 is classified in this subclass (see Search Class Note for Class 385).
SEE OR SEARCH THIS CLASS, SUBCLASS:
193, for an optical receiver in combination with an optics element as classified in Class 359.
SEE OR SEARCH CLASS
250, Radiant Energy, 206, for photocell control that could be an optical communication type modulator.
324, Electricity: Measuring and Testing,
95, for measuring, testing, or sensing electricity, per se, with waveguide or long line.
385, Optical Waveguides, appropriate subclasses for optical waveguide structure, per se.
