UNIVERSITY OF MADRAS
B.Sc. DEGREE COURSE IN ELECTRONICS SCIENCE
SEMESTER SYSTEM WITH CREDITS
(Effective from the Academic Year 2003-2004)

Semester VI - Paper XV - Opto - Electronics

Duration: 4 hrs
Maximum Marks: 100
Credits: 4

Unit-1

Optical Processes in Semiconductors : Electron- hole Pair formation and recombination- band to band recombination- absorption in semiconductors- exciton absorption - donor-acceptor and impurity band absorption- absorption in quantum wells - radiation in semiconductors-Luminescence from quantum wells- time resolved photo luminescence.

Unit-2

Semiconductor Junctions : The hetrojunction- LED structure - heterojunction LED - Edge emitting LED- I-V Characteristics -Spectral and frequency response.

Unit-3

Photodetectors: Junction photo diodes- PTN-APD- Photo transistor- modulated barrier photo diode - Schottky barrier - MSM photo diode- multicavity Photo diodes - Basic Principles of Solar cells.

Unit-4

Switching Devices and Opto-electronic ICs : Electro optic modulators - Optical switching and logic devices - application of OEIC' S- materials and processing for OEIC'S - Integrated transmitters and receivers - guided wave devices.

Unit-5

Fiber Optic Communication Optical fibre - Characteristics and fundamental parameters - Propagating modes - low loss fibres - transmission distance with optical fibres - examples of optical transmission techniques - instrumentation and control with optical fibres.

Books for study and reference