Integrated optics Optical wave guides 43 Optoelectronic devices 43 Optical communications 17 Equipment and supplies 12 Design and construction 11 Integrated circuits 7 Telecommunication 7 Finite differences 6 Miniature electronic equipment 6 Optical MEMS 6 Photonics 6 Signal processing 6 Fiber optics 5 Materials 5 Digital techniques 4 Lenses 4 Microelectromechanical systems 4 Nanophotonics 4 Semiconductors 4 Switching circuits 4 Switching systems 4 Very high speed integrated circuits 4 Biotechnology 3 Diffraction gratings 3 Medical electronics 3 Microelectronic packaging 3 Optical properties 3 Silicon 3 Biosensors 2