JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY ANANTAPUR
B. Tech IV-ISem. (ECE)
(15A04701) OPTICAL FIBRE COMMUNICATION
Course Objectives:
The course gives an account of optical Communication starting with the basic
of fiber optics.
To give clear understanding of various components such as Optical fibers,
Photo detectors, connectors, coupling devices and optical amplifiers
Knowledge of various components used in optical networks.
Knowledge about Various topologies used to construct an optical networks.
Course Outcomes:
Analyze the performance of both digital and analog optical fiber systems
Calculate the system bandwidth, noise, probability of error and maximum
usable bit rate of a digital fiber system
Calculate the system link loss, distortion and dynamic range of an RF
photonic link
To perform characteristics of fiber sources and detectors, design as well as
conduct experiment in software and hardware, and analyze the results to
provide valid conclusions.
UNIT-I
Introduction to Optical Fibers: Evolution of fiber optic system- Element of an Optical
Fiber Transmission link- Ray Optics-Optical Fiber Modes and Configurations –Mode
theory of Circular Wave guides- Overview of Modes-Key Modal concepts- Linearly
Polarized Modes –Single Mode Fibers-Graded Index fiber structure.
UNIT-II
Signal Degradation Optical Fibers: Attenuation – Absorption losses, Scattering
losses, Bending Losses, Core and Cladding losses, Signal Distortion in Optical Wave
guides - Information Capacity determination –Group Delay- Material Dispersion, Wave
guide Dispersion, Signal distortion in SM fibers-Polarization Mode dispersion,
Intermodal dispersion, Pulse Broadening in GI fibers-Mode Coupling –Design
Optimization of SM fibers-RI profile and cut-off wavelength.
UNIT-III
Fiber Optical Sources and Coupling : Direct and indirect Band gap materials-LED
structures –Light source materials –Quantum efficiency and LED power, Modulation of
a LED, lasers Diodes-Modes and Threshold condition –Rate equations –External
Quantum efficiency –Resonant frequencies –Temperature effects, Introduction to
Quantum laser, source-to-fiber Power Launching, Lensing schemes, Fiber –to- Fiber
joints, Fiber splicing.
UNIT-IV
Fiber Optical Receivers : PIN and APD diodes –Photo detector noise, SNR, Detector
Response time, Avalanche Multiplication Noise –Comparison of Photo detectors –
Fundamental Receiver Operation – preamplifiers, Error Sources –Receiver
Configuration –Probability of Error – Quantum Limit.
UNIT-V
System Design and Applications: Design of Analog Systems: system specification,
power budget, bandwidth budget.
Design of Digital Systems: system specification, rise time budget, power budget,
Receiver sensitivity.
Text Books:
1. Gerd Keiser, “Optical Fiber Communication” McGraw –Hill International,
Singapore, 3rd ed., 2000.
2. J.Senior, “Optical Communication, Principles and Practice”, Prentice Hall of India,
1994.
References:
1. Max Ming-Kang Liu, “Principles and Applications of Optical Communications”,
TMH, 2010.
2. S.C.Gupta, “Text book on optical fiber communication and its applications”, PHI,
2005.
3. Satish Kumar, “Fundamentals of Optical Fiber communications”, PHI, 2009.
OFC PDF 👇👇(all subjects will be uploaded shortly)
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