9 DIFFRACTIVE OPTICS; MICRO-OPTICS; SILICON BENCH SYSTEMS, NAMELY PASSIVE OPTICAL COMPONENTS (FILTERS, REFRACTIVE LENSES, DIFFRACTIVE LENSES, BEAM SPLITTERS, MIRRORS, ETALONS, AND GRATINGS) AND ELECTRO-OPTICAL COMPONENTS )PHOTODETECTORS AND LIGHT EMITTERS); AND INTEGRATED MICRO-OPTICAL SYSTEMS, NAMELY MICRO-OPTICS (FILTERS, REFRACTIVE LENSES, DIFFRACTIVE LENSES, BEAM SPLITTERS, MIRRORS, ETALONS, AND GRATINGS) AND ELECTRO-OPTIC ELEMENTS (PHOTODETECTORS AND LIGHT EMITTERS) FOR, NAMELY, DATA TRANSMISSION, IMAGE DISPLAY, IMAGING, DATA STORAGE, BAR CODE SCANNING, ILLUMINATION, WAVELENGTH LOCKING, OPTICAL MULTIPLEXING, AND FIBER COUPLING