DetailedDescription
–Optical Fiber structure, light propagation within the fiber, Snell’s
law,ray theory.
–Modes in a cylindrical waveguide, modes in an opticalfiber,
–Types of fiber, single mode, multi mode, step index, graded
index.
–Transmission characteristics: Attenuation in fiber due to
absorption,
scattering, bending etc, inter and intra modal dispersion of light
pulses.
–Optical sources: LASER and LED, working, type of sources,
optical transmitter, modulation andmultiplexing
–OpticalAmplifiers, types of amps, EDFA and its working.
–Optical detectors: photodiodes, working, type of detectors, APD,
optical
receiver, demodulation andde-multiplexing.
–Optical communication system performance characteristics,
SNR,WDM systems.