JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• 1. To know the basic geometric structures of Optical fibres, Light laws, Soliton pulses, modes of operation and losses in fibres.
• 2. To know the physical principles of optical sources, optical detectors and WDM.
• 3. To understand and design the analog and digital optical links, the noise effects and error control techniques.
• 4. To understand the working of various optical components and optical networks.

Course Outcomes

By the end of this course the student will be able to:

• 1. Analyze and design the optical links for different applications.
• 2. Know the working of WDM systems and various optical components for different applications.
• 3. Choose the optical networks for various applications.

UNIT - I

Optical Fibers: Structures, waveguiding and Fabrication: Nature of Light, Basic optical laws and definitions, Single mode fibers, Graded index fiber structure, Attenuation, Signal Dispersion in fibers. Optical Sources- LEDs, Laser Diodes, Line Coding.

UNIT - II

Photo detectors: Photo detector Noise, Detector Response Time, Avalanche Multiplication Noise. Optical Receiver Operation: Fundamental receiver operation, Digital receiver performance, Eye diagrams. WDM Concepts and Components: Passive optical Couplers, Isolators and Circulators

UNIT - III

Digital Links: Point to point links, power penalties, error control, Coherent detection, Differential Quadrature Phase Shift Keying. Analog Links: Carrier to noise ration, Multichannel Transmission Techniques, RF over Fiber, Radio over fiber links, Microwave Photonics.

UNIT - IV

Optical Networks: Network Concepts, Network Topologies, SONET/SDH, High speed lightwave links, Optical add/ Drop Multiplexing, Optical Switching, WDM Network, Passive Optical Networks, IP Over DWDM, Optical Ethernet, Mitigation of Transmission Impairments

UNIT - V

Performance Measurement and Monitoring: Measurement standards, Basic Test Equipment, Optical power measurement, Optical fiber characterization, Eye diagram tests, optical time domain reflectometer, optical performance monitoring, optical fiber system performance measurements.

TEXT BOOKS:

• 1. Gerd Keiser, “Optical Fiber Communications”, 5th Edition, Mc Graw Hill.
• 2. Rajeev Ramaswamy and Kumar N Sivarajan, “Optical Networks: A Practical Perspective”, 2nd Ed., 2004, Elsevier Morgan Kaufmann Publishers (An imprint of Elsevier).

REFERENCE BOOKS:

• 1. John. M. Senior, “Optical Fiber Communications: Principles and Practice”, 2nd Ed, 2000, PE.
• 2. Harold Kolimbris, “Fiber Optic Communication”, 2nd Ed, 2004, PEI
• 3. Uyless Black, “Optical Networks: Third Generation Transport Systems”, 2nd Ed, 2009, PEI
• 4. Govind Agarwal, “Optical Fiber Communications”, 2nd Ed, 2004, TMH.
• 5. S. C. Gupta, “Optical Fiber Communications and its Applications”, 2004, PHI M.TECH.- I YEAR- I SEMESTER ELECTRONICS AND COMMUNICATION ENGINEERING