Optics 142 Fiber optics 81 Nonlinear optics 81 Optical communications 81 Physics 70 Light & paraphotic phenomena (Optics); Physics 58 Lasers 52 Photonics 51 Dissertations, Academic (Ph.D) 37 Quantum optics 37 Thin films 35 Optoelectronics 32 Optical fiber communication 31 Thesis (Ph.D)-Physics 31 Optoelectronic devices 29 Optical instruments 28 Optical fibers 27 Optical properties 27 Optical materials 26 Light 25 Nanotechnology 24 Nanostructured materials 22 Integrated optics 21 Soil Science and Agricultural Chemistry 20 Chemistry 19 Physical optics 19 Semiconductors 19 Agronomy 18 Crystal optics 18 Electric properties 17