EXALIGHT

Telecommunication machines and apparatus, namely, optical transmitters and optical receivers; digital coherent transceivers, optical modulators, integrated optical circuits and semi-conductor chips, optical amplifiers, optical couplers, optical switches, optical gratings, optical drivers; laser chips, pump and signal combiners, pump lasers, interferometers, fiber laser mirror gratings, fiber Bragg gratings, cladding power strippers, frequency taps and splitters, photo detectors, optical isolators, optical attenuators, optical modulators, optical circulators, optical polarizers, optical filters, waveguides for optical transport systems, wavelength division multiplexers, optical add and drop multiplexers; electronic machines, apparatus, namely, coherent optical subassembly and their parts, for digital coherent transport systems