Apparatus for transmission of communication; Optical fiber cables; Optical cables; Telecommunication cables; Optical receivers; Electronic and optical communications instruments and components, namely, optical transceivers; Semi-conductors; Radio receivers and transmitters; Fibre optic couplings; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches includin...