Course
UndergraduateSemester
ElectivesSubject Code
AV472Subject Title
Opto‐Electronics and Fiber Optics CommunicationSyllabus
Review of P-N junction characteristics – semiconductor-heterojunction-LEDs (spontaneous emission-LED structure-surface emitting-Edge emitting-Injection efficiency-recombination efficiency-LED characteristics-spectral response-modulation-Bandwidth. Laser diodes-Basic principle-condition for gain-Laser action-population inversion-stimulated emission-Injection faster diode-structure temperature effects-modulation-comparison between LED and ILDs. Optical detectors principle-absorption coefficient-detector characteristics-Quantum efficiency-responsivity-response time-bias voltage-Noise in detectors P-N junction-photo diode-B.W-Noise-photo transistor.
Optical Fiber-structure-propagation-wave equation-phase and group velocity-transmission characteristics-attenuation-absorption-scattering losses-dispersion-fiber bend losses-source coupling, splices and connectors-wavelength division multiplexing. Optical fiber system-system design consideration-fiber-source limitations-pre-amplifier-equalization-Fiber optic link analysis-typical link design.
Text Books
- Gerd Keiser, Optical Fiber Communications, 3rd Edition, McGraw Hill Publications, 2000.
References
- Pallab Bhattacharya, Semiconductor Opto electronics Devices, Pearson Education
- John M Senior Optical fibre Communication Systems‐Principles and practice, PHI.
- John Gower, Optical communication Systems, PHI.
Course Outcomes (COs):
CO1: Understand the electronic and optoelectronic properties of semiconductors, operation of PN diode, various light absorption and emission mechanisms in semiconductors
CO2: Study the basic operating principle of LED, semiconductor lasers, heterojunction lasers, quantum well lasers, VCSEL, DFB and DBR lasers, photodetectors, solar cells.
CO3: Understand total internal reflection, Snell's law, understanding construction and light guiding mechanisms in waveguides [optical fibers and planar waveguides].
CO4: Design an optical communication link and test it and understand different types of optical fibres, loss and dispersion mechanisms.