Fiber optics Lasers 28 Optical communications 20 Optical fiber detectors 18 Optical fibers 16 Erbium 13 Photonics 12 Optical amplifiers 11 Optical wave guides 7 Laser pulses, Ultrashort 6 Materials 6 Thulium 6 Design and construction 5 Nonlinear optics 5 Optical fiber communication 5 Testing 5 Absorption 4 Structure 4 Brillouin scattering 3 Crystal optics 3 Doped semiconductors 3 Equipment and supplies 3 Nanoparticles 3 Optical properties 3 Photonic crystals 3 Resonators 3 Telecommunication 3 Wavelength division multiplexing 3 Zinc oxide thin films 3 Control 2