Hemeixin Electronics Co.,Ltd.
Realistic Electronics & Telecommunication Engineering Interviews: 12 of 28 – Optical FIbre Communication, Network Synthesis, and Industrial Relations. For infinite number of professional interviews (Exactly as you experience in professional companies – Technical + HR), visit interview series covers graduate syllabus and the syllabus of Masters degree to a great extent. For example, the key topics like, Optical fiber Communications, Optical Spectral bands, Evolution of fiber optic system, Multiplexing Techniques, Structures of Optical fibers, Waveguiding of Optical fibers, Fabrication of Optical fibers, Optical laws and definitions, optical fiber modes and configurations, Mode theory, Step Index and Graded Index (GI) fibers ,single mode and graded index fibers, Signal Degradation in Optical Fibers, Attenuation, signal distortion in optical waveguides, pulse broadening in graded index fiber, Characteristics of Single Mode Fibers, Light emitting diode (LEDs)- structures, materials, Figure of merits, characteristics & Modulation. Laser Diodes -Modes & threshold conditions, Diode Rate equations, fiber-to-fiber joints, LED coupling to single mode fibers, fiber splicing, Optical fiber connectors, Preamplifier types, receiver performance and sensitivity, Eye diagrams, Coherent detection, Link power budget and rise time budget methods for design of optical link, BER calculation, Semiconductor optical Amplifier, EDFA, Raman Amplifier, Wideband Optical Amplifiers, Principles of WDM, DWDM, Telecommunications & broadband application, SONET/SDH, MUX, Analog & Digital broadband, optical switching, Optical couplers, Tunable sources and Filters ,optical MUX/DEMUX, Arrayed waveguide grating, optical add drop multiplexer (OADM), optical cirulators, attenuators, optical cross connects, wavelength converter, Mach-Zender Interferometer, Test Equipments, OTDR , Set ups for Measurement of Attenuation, Dispersion, NA and EYE pattern, Optical Fiber Communications, International Standards for optical transmission fibers, Optical Sources, Power Launching and Coupling, Photodetectors, figure of merits of detectors photodiode materials, photodetector noise, detector response time, Optical Receiver Operation, optical Transmission Systems, Optical Amplifiers, Advances in Optical Fiber Systems, Overview of Optical Components, Fiber Optical Measurements.