Coaxial cables, data transmission cables, power cables, super conductor electrical cables, optical fiber cables and electrical cables for use in telecommunications applications; electrical conductors, electrical cable junctions and replacement parts therefor for submarine and terrestrial use; fiber optic light and image conduits; telecommunications systems comprised of any one or a combination of the following-- optical signal generators, optical signal regenerators, optical signal receivers, optical signal transmitters, optical signal distributors, optical signal converters, optical signal multiplexing and demultiplexing, optical amplifiers, optical repeaters, optical filters, optical fibers and replacement parts thereof; wavelength division multiplexing optical telecommunications systems comprised of any one or a combination of the following-- optical signal generators, optical signal regenerators, optical signal receivers, optical signal transmitters, optical signal distributors, optical signal converters, optical signal multiplexing and demultiplexing, optical amplifiers, optical repeaters, optical filters, optical fibers and replacement parts thereof; video, voice and data transmission systems comprised of any one or a combination of the following-- optical signal generators, optical signal regenerators, optical signal receivers, optical signal transmitters, optical signal distributors, optical signal converters, optical signal multiplexing and demultiplexing, optical amplifiers, optical repeaters, optical filters, optical fibers and replacement parts thereof; systems for interactive services distribution comprised of any one or a combination of the following-- optical signal generators, optical signal regenerators, optical signal receivers, optical signal transmitters, optical signal distributors, optical signal converters, optical signal multiplexing and demultiplexing, optical amplifiers, optical repeaters, optical filters, optical fibers and replacement parts thereof; transmitters, receivers and transmission distribution systems comprised of any one or a combination of the following-- optical signal generators, optical signal regenerators, optical signal receivers, optical signal transmitters, optical signal distributors, optical signal converters, optical signal multiplexing and demultiplexing, optical amplifiers, optical repeaters, optical filters, optical fibers and replacement parts thereof for use in converting electrical signals to optical signals and vice versa; optic networks comprised of any one or a combination of the following-- optical cables, optical transmitting stations, optical receiving stations, optical intermediate stations for dividing, multiplexing, selecting, adding, and extracting signals, and replacement parts therefor; optical signal generators, optical signal receivers, optical signal transmitters, optical signal regenerators, optical signal amplifiers, optical signal couplers, optical signal switches, optical fibers and replacement parts therefor; cable television transmitters, cable television distribution networks comprised of any one or a combination of the following-- optical signal generators, optical signal regenerators, optical signal receivers, optical signal transmitters, optical signal distributors, optical signal converters, optical signal multiplexing and demultiplexing, optical amplifiers, optical repeaters, optical filters, optical fibers and replacement parts thereof; cable television signal modulators, cable television signal amplifiers, cable television receivers, and replacement parts therefor; optical wave guide devices on a planar optical substrate, namely, optical signal splitters, optical signal modulators, optical signal filters, lasers not for medical use, multiplexers and replacement parts therefor, optical signal amplifiers and replacement parts therefor, and optical signal modulators and replacement parts therefor