A TUNABLE, COHERENT LIGHT SOURCE EMITTING OR PRODUCING FAR-INFRARED PHOTONS AND EQUIPMENT RELATED THERETO, NAMELY SCANNABLE FAHRY PEROT ETALONS, SCANNING GRATING MONOCHROMATORS, AND INTERFEROMETERS, NOT FOR USE IN THE MEDICAL FIELD

fiber optic communication hardware, namely optical signal dispersion compensators, optical signal regenerators, fiber optic Internet protocol router and software for use in the operation of fiber optic communications networks