Optical Fiber Communication | Department of Electrical Engineering

Optical Fiber Communication

Course Summary

Basics of optical fiber communication system including signal propagation through optical fibers, fiber impairments, components, devices and optical fiber communication system design.

Course Aims

The proposed course aims to expose the students to the basics of optical fiber communication system including signal propagation through optical fibers, fiber impairments, components, devices and optical fiber communication system design.

Learning Outcomes

On successful completion of the course, students will be able to:
1. Be familiar with Optical Fiber Communication System and its parameters including single and multimode fibers, fiber couplers, connectors etc..
2. Demonstrate basic fiber handling skills, including cleaving and splicing.
3. Understand and measure properties of optical sources, detectors and receivers.
4. Design, construct and test a basic optical fiber communication link/system.
5. Write a good technical report and clear and informative presentation.
13. Curriculum Content

Module 1:
Overview of optical communication, other forms of communication systems, Introduction to vector nature of light, Propagation of light, Ray model and wave model. Optical fiber: Types, Structure and wave guiding fundamentals, Optical fiber modes and analysis, Step and Graded Index Fibers.

Module 2:
Signal degradation in Optical fiber due to dispersion and attenuation

Module 3:
Optical Sources: Basic light emission mechanism in semiconductors, LED and Lasers, Optical Detectors: Basic light absorption concepts in semiconductors, photodiodes, p-i-n detectors, detector responsivity, noise, Optical Receivers.

Module 4:
(a) Optical Power Launching and Coupling: Lensing Scheme for coupling improvement, Fiber-to-Fiber Joints, Splicing Techniques, Optical fiber connectors.
Optical modulation & Receiver Operation: Analog & Digital modulation, Fundamental receiver operation and performance calculation, Preamplifier design, Analog receivers, heterodyne receiver. Transmission link analysis, Point to point links, Introduction to coherent optical communication & applications of optical fibers.

(b) Optical fiber system fundamentals: BER measurements, quantum limit, loss and dispersion limits. Optical Switches – coupled mode analysis of directional couplers and electro-optic switches.

Module 5:
Basics of Optical amplifiers, nonlinear effects in optical fiber links, Optical amplifiers and soliton based Communication.

Teaching and Learning Strategy

a) Lectures will incorporate brief hand-outs, quizzes along with white board / black board and multimedia teaching methods. Additionally, students will be motivated for working in groups on problems related to the course.
b) Laboratories will be used for demonstration of different optical fiber communication components and their working and troubleshooting.
c) Blackboard will be used to share e-books and other class material, and to enable online discussions.

Teaching and Learning Strategy Class Hours Out-of-Class Hours
Lectures 42- hours 80- hours
Laboratories 20- hours 20- hours


Assessment Strategy

Formative Assessment:
a) Assignments 10%
b) Quizzes 05%
c) Mini project / Lab 25%
d) Midterm Exam 25%
Summary Assessment
a) Final Exam and/or project 35%
16. Mapping of Learning Outcomes to Assessment Strategy

Assessment Scheme
Type of Assessment Description Percentage
Lab / Projects 25%
Quizzes 10%
Midterm Exam 25%
F Final Exam 35%
Total 100%


Books / References-
• G. Keiser, Optical Fiber Communications, TMH.
• A. Ghatak & K. Thygarajan, Introduction to Fiber Optics, Cambridge.
• J. Gowar, Optical Communication Systems, PHI.
• J.M. Senior, Optical Fibre Communications: Principles & Practice, PHI

Course Code: 
Course Credits: 
Course Level: