Optical communications Fiber optics 56 Computer networks 16 Wireless communication systems 15 Telecommunication 12 Equipment and supplies 9 Data transmission systems 6 Optical fibers 6 Integrated optics 5 Lasers 5 Optoelectronic devices 5 Photonics 5 Multiplexing 4 Optical amplifiers 4 Optical detectors 4 Optoelectronics 4 Switching systems 4 Telecommunication systems 4 Wavelength division multiplexing 4 Wireless Internet 4 Laser communication systems 3 Routers (Computer networks) 3 Broadband communication systems 2 Design and construction 2 High performance computing 2 Integrated circuits 2 Microwave communication systems 2 Mobile communication systems 2 Nonlinear optics 2 Packet switching (Data transmission) 2