TEMPORAL OPTICAL MODULATION WITHIN AN OPTICAL WAVEGUIDE:
(under the class definition) Subject matter wherein a device varies a property of light as a function of time only as it traverses the waveguide where such variation is in accordance with a varying signal which can be of any energy form.
(1) Note. Such properties of the traversing light include amplitude, frequency, phase, or polarization.
(2) Note. The variation can be imparted through elasto-optic, magneto-optic, acousto-optic, etc., interactions with the waveguide.
(3) Note. Elasto-optic modulation involves varying a property of a light wave propagating in an optical waveguide by a mechanical stressing applied thereto.
(4) Note. Magneto-optic modulation involves varying a property of a light wave propagating in an optical waveguide by a magnetic field applied thereto.
(5) Note. Acousto-optic modulation involves varying a property of a light wave propagating in an optical waveguide by a modulating sonic (acoustic) wave applied thereto.
(6) Note. The modulation must take place exclusively within the waveguide. Optical modulation occurring outside of a waveguide is classified in Class 359. SEE OR SEARCH THIS CLASS, SUBCLASS:
4+, for directional modulation within fiber optics.
SEE OR SEARCH CLASS
359, Optics: Systems (Including Communication) and Elements,
238+, for light wave temporal modulation outside of a waveguide.
