74561018
Aug 15, 1994
Nov 28, 1995
fiber optic components, namely splitters, combiners, couplers, tap/drop-offs, star couplers, multi/demultiplexers, wavelength division multi/demultiplexers, frequency division multi/demultiplexers, thermo-optic switches, optical interconnects, interferometers, optical delay lines, optical signal processors, arrayed waveguide gratings, filters, ring resonators, waveguide optical amplifiers, optical printed circuit boards and planer waveguides
Electrical and Scientific Apparatus