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EE 164 - Topics
- Light Sources
- Overview - photodiodes, laser (gas / semiconductor)…. comparison on performance -
linearity, noise, response, power, reliability…etc.
- LED - structure, material, quantum effect, modulation, transient, bandwidth, power….etc.
- Laser Diodes
- Optical Fibers
- Step Index Fiber - dispersions, modes (leaky, hybrid, transverse, linearly-polarized…),
structure, properties
- Graded Index Fiber
- Comparison on Single Mode Step Index and Multimode Graded Index Fiber - EM fields,
power flow, dispersions, cost / Performance, Non-linearity
- Couplers and Connectors
- Splices (mechanical, fusion) - performance, reliability, alignment, surface finish…etc.
- Connectors - Lens-coupled, Butt-coupled (Tube, Sleeve, Eccentric, Tapered, Rod, Bushing,
Four-pin, Ferrule…)
- Couplers - Star, Directional, Performance (Loss, Mismatch, Alignment..)
- Power Launching
- Source to Fiber Coupling - Single Mode vs. Multimode, methods, efficiency….
- Transmitter vs. Receiver, Source Pattern, Wavelength dependence, comparison
- Source Coupling Losses - Reflection, Mismatch, Packing Fraction, Numerical Aperture….
- Light Detectors
- PN, Pin Photodiodes - principles, structures, performance (response time, noise, gain,
efficiency)...
- Avalanche Photodiodes
- Phototransistors
- Modulation
- Analog - AM, IM, FM, PM, PL, ASK, OOK….. circuits, comparison with other modulation
schemes
- Digital - AM/IM, PPM, PDM, FSK, PSK, DPSK,
- Multilevel Modulations - N-PSK, N-QAM, N-4QSK, N-4Q-QAM, WD-FSK & Phase Noise
- Multiplexing
- Time Division (TDM)
- Frequency & Wavelength Division (FDM / WDM)
- Comparison of TDM, WDM & SDM (Space Division) - physical structure, cost, performance
- Noise
- Signal-to-Noise Ratio
- Noise & Error Rate
- Thermal & Shot Noise - What? How? Magnitude? Minimize?
- Intensity & Competition Noise
- Partition Noise
- Modal Noise
- Signal Degradation
- Attenuation - absorption, scattering, radiation, fiber
- Distortion - delay, material, waveguide & intermodal dispersion
- Pulse broadening in Graded-Index Waveguides and Mode Coupling
- Receivers
- Single Branch vs. Balanced Receiver
- Polarization vs. Phase Diversity Receiver
- Heterodyne Reveiver
- System Considerations
- Analog
- Digital
- Repeaters
- Muliterminal Network
- WDM Systems - frequency stabilization, crosstalk
- FDM Systems - channel interference, non-linear effect in propagation
- SCM (Sub-Carrier Multiplexing) Systems
- Power Budget & Distribution Systems - components considerations
- Components
- Amplifier
- Switches
- Filter
- Isolators
- Integrated Optics
- Overview - state-of-the art technology
- Components - waveguide, coupler, detector, laser
- Modulators