Optoelectronic components for use in telecommunications, voice and data transmission applications, namely, semi-conductor lasers, laser wave guides, semi-conductor laser wave guides, [ laser beam splitters, optic couplers, ] optical sensors; [ optical polarizing beam splitters; ] laser diode transmitters, [ pump laser diodes, ] semi-conductor light emitters, laser wave guides for guiding laser beams [, filters for filtering laser beams ]