2K6 EC 802: OPTICAL COMMUNICATION
Module I (14 hours)
Introduction to: The Electromagnetic Spectrum- Fiber Optic Communication System, Benefits and disadvantages Fiber Optics Transmission through Optical Fiber, Types of Fiber. Solution to Maxwell’s equation in circularly symmetric step indexed optical fiber. Concept of single mode and multi mode fibers-V number-linearly polarized modes. Attenuation mechanism in single and multi mode optical fibers. Dispersion: dispersion shifted and dispersion flattened fibers polarization maintaining fibers. Basics of optical couplers, build out attenuators and optical switches
Module—II (12hours)
Optical Sources: Basic principle of LED and, LASER – structure- quantum efficiency -characteristics material used concept of line width, Distributed feedback (DFB) laser. Detectors: PIN -Avalanche Photodiode: – material used, working principle and characteristics Photo detector-responsivity-sensitivity- noise – response time- structure of detectors- receiver units.
Module –III(13 hours)
Coherent optical systems. Methods of modulation, Heterodyne and Homodyne systems, Noise in coherent systems Multichannel coherent systems. Intensity modulated direct detection systems. Detected signals and shot noise-ISI and equalization. Performance degradation due to fiber dispersion and non-linear effects in fiber propagation.
Module –IV(13 hours)
Optical amplifiers: semiconductors and rare earth doped fiber amplifiers-Raman amplifier-Brillouin amplifier-principle of operation-amplifier noise. Optical TDM, SCM, WDM and Hybrid multiplexing methods. Optical networks:- SONET/ SDH, DWDM, Optical CDMA, FDDI, performance of various systems.
Text books
1. Leonid Kazovsky, Sergio Benedetto and Alan Willner: `Optical Fiber Communication Systems’ , Artech House, 1996.
2. John Senior: `Optical Fiber Communications’, Second Edition, PHI, 1992
3. Silvello Betti, Giancarlo De Marchis and Eugenio Iannone : `Coherent Optical Communications Systems’, John Wiley, 1995.
4. G.P.Agrawal : `Nonlinear Fiber Optics’, Second edition, Academic Press, 2000.
5. Gerd Keiser: Optical Fibre Communications (3rd Ed.), McGraw Hill, 2000.
References
1. Fibre optic communication technology: Djafer K Mynbaev, Pearson Education.
2. Electronic communication: Dennis Roddy & John coolen, PHI. .
3. Optical communication system: John Gower, PHI
4. Fibre optics in telecommunication: Sharma, Mc Graw Hill
5. Optical fibre and fibre optic communication: Subir Kumar Sarkar, S Chand & co. Ltd
6. Optical communication: M Mukund Rao , Universities press.
7. Fiber Optic Communication: Palais, Pearson Education.