Telecommunication 154 Optical communications 144 Microwaves, RF Engineering and Optical Communications 135 Fiber optics 115 Optics 109 Lasers 93 Optical materials 63 Optical properties 60 Communications Engineering, Networks 54 Electronic Circuits and Systems 54 Electronic circuits 54 Lantern slides 51 Signal processing 51 Design and construction 45 Electronics 42 Photonics 42 Motion pictures 41 Wireless communication systems 41 Motion picture industry 40 Optical instruments 40 Lantern projection 39 Electronics and Microelectronics, Instrumentation 38 Optoelectronic devices 37 Materials 34 Optical Materials 34 Signal, Speech and Image Processing 34 History 32 Industrial applications 32 Nonlinear Optics 32 Data processing 31