Wavelength division multiplexing Optical communications 68 Fiber optics 29 Code division multiple access 11 Multiplexing 11 TCP/IP (Computer network protocol) 8 Computer networks 6 Optical amplifiers 6 Wireless LANs 6 Wireless communication systems 6 Optical fiber communication 5 Orthogonalization methods 4 Silicon 4 Technological innovations 4 Light 3 Optical communication 3 Optoelectronic devices 3 Routers (Computer networks) 3 Wavelength 3 Communication 2 Design and construction 2 Metropolitan area networks (Computer networks) 2 Microwave optics 2 Packet switching (Data transmission) 2 Passive optical networks 2 Photonics 2 Quality control 2 Telecommunication systems 2 Digital techniques 1 Fault location (Engineering) 1