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EC643 Optical Networks 3-0-0; Credit: 3; Lectures- 42 PREREQUISITE Optical Fiber Communication Computer Networks COURSE OBJECTIVE To learn the fiber optical network components, variety of networking aspects, SONET/SDH and operational principles OF WDM. To acquire in-depth understanding of various optical networks technologies, systems, and related networks issues. To learn about Network management and access networks. To provide the understanding of photonic packet switching. COURSE CONTENT Unit-I: Introduction to Optical Networks Unit-II: Optical Components: Couplers, Isolators & Circulators, Multiplexers & Filters (Grating, Fiber Bragg Grating, Fabry-Perot Filters, Dielectric filters, Acousto-optic filter, etc.), Some Optical Amplifiers (Erbium-Doped Fiber Amplifiers, Raman Amplifiers, Semiconductor Optical Amplifiers), Switches (Large Optical Switches, Optical Switch Technologies, Large Electronic Switches), and Wavelength Converters (Opto-electronic Approach, Optical Gating, Interferometric Techniques, Wave-Mixing). Unit-III: Transmission System (Design of Physical Layer of Optical Network) System Model, Power Penalty (Transmitter & Receiver), Optical Amplifiers (Gain saturation and equalization in EDFAs, Amplifier cascading, Amplifier spacing penalty, Power Transients & Automatic Gain Control, Lasing Loops), Crosstalk (Intra-channel and Inter-channel Crosstalk, Crosstalk in Networks, Crosstalk Reduction, Cascaded Filters), Dispersion (Chromatic Dispersion Limits: NRZ & RZ Modulation, Dispersion Compensation, Polarization-Mode Dispersion (PMD)), Fiber Nonlinearities, Wavelength Stabilization. Unit-IV: Optical Network Architectures SONET / SDH (Multiplexing, VCAT & LCAS, Layers and Frame structures, SONET/SDH Physical Layer, Infrastructure elements), Optical Transport Network, Generic Framing Procedure, Ethernet (Frame structure, Switches, Physical layer, Carrier transport), Internet Protocol, Multi-Protocol Label Switching, Resilient Packet Ring. Unit-V: Wavelength Routing Networks WDM Network Elements (Optical-Line Terminals & Amplifiers, Optical Add/Drop Multiplexers, Optical Cross-connects), WDM Network Design (Cost Trade-Offs, Wavelength-Routing Network Design & Problems, Statistical Dimensioning Models) Unit-VI: Photonic Packet Switching and Access Network Optical Time Division Multiplexing (Bit & Packet Interleaving, Optical AND Gates), Synchronization, Header Processing, Buffering, Burst Switching, Testbeds and Access Networks. Unit-VII: Network Management And Survivability Control and Management (Network Management Functions, Configuration management, Performance & Fault management, Optical safety), Network Survivability (Protection in SONET / SDH and IP Networks, Optical layer Protection, Interworking between layers). TEXT BOOKS 1. Rajiv Ramaswami, Kumar N. Sivarajan, and Galen H. Sasaki, "Optical Networks: A Practical Perspective", Third Edition, Morgan Kaufmann Publishers Inc., 2010. REFERENCE BOOKS 1. Biswanath Mukherjee, “Optical WDM Networks”, Springer, 2006. 2. Siva Ram Moorthy and Mohan Gurusamy, “WDM Optical Networks : Concept, Design and Algorithms”, Prentice Hall of India, 2002. 3. John M. Senior, "Optical Fiber Communications" 3rd Edition, Prentice Hall, 2009 4. Paul Eliot Green, "Fiber Optic Networks", Prentice Hall, 1993. COURSE OUTCOMES Students would be able to – CO1: Get a basic understanding of physical properties of optical networks and protocols. CO2: Acquire a profound understanding of optical switching methods & networking techniques, etc. CO3: Define the main limitations and possibilities of the optical network technologies CO4: Design optical networks, taking both physical transmission properties and optical networking constraints into account. CO5: Explain the benefits of optical layer survivability and the main issues in management and control of optical networks