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Optical switches and optical switch components, namely, cross connects, optical add-drop multiplexers, control and data storage computers for optical switches, operating software for optical switches, fiber Bragg gratings, phase masks, gratings for lasers, sub-wavelength structures; power supplies for optical switches, optical fiber mounts, fiber alignment components, namely waveguides, fiber connectors and lens couplers; interference lithography tools comprised of a laser, optical fibers, optical bench, beam splitters, substrate stages, and rails, and parts therefore, used to generate sub-wavelength and sub-micron patterns on substrates