Optical Communications

Course Information
TitleΟπτικές Επικοινωνίες / Optical Communications
SchoolElectrical and Computer Engineering
Cycle / Level1st / Undergraduate
Teaching PeriodSpring
CoordinatorEmmanouil Kriezis
Course ID600001045

Programme of Study: Electrical and Computer Engineering

Registered students: 66
OrientationAttendance TypeSemesterYearECTS
ELECTRICAL ENERGYElective Courses846

Class Information
Academic Year2022 – 2023
Class PeriodSpring
Faculty Instructors
Weekly Hours5
Class ID
Course Type 2021
Specialization / Direction
Course Type 2016-2020
  • Scientific Area
Course Type 2011-2015
Specific Foundation / Core
Mode of Delivery
  • Face to face
  • Distance learning
Language of Instruction
  • Greek (Instruction, Examination)
  • English (Examination)
General Prerequisites
Elements of electromagnetic wave propagation, electronics, signals & systems and digital communications
Learning Outcomes
1. Understanding light guidance in planar waveguides and optical fibers and feels confidence with mode calculations in such guides. 2. Detailed analysis of dispersion mechanisms and pulse propagation in single-mode fibers. 3. General understanding of semiconductor optical sources technology, with emphasis on laser-diodes. 4. Photodiodes and optical receiver basics, including noise sources and fundamental limitations. 5. IM/DD (OOK) systems: system-level performance, BER, SNR, etc. Multiplexing techniques.
General Competences
  • Apply knowledge in practice
  • Work autonomously
Course Content (Syllabus)
Evolution of optical communication systems overview. Optical waveguides and optical fibers: characteristics, ray theory and wave theory, guided modes, mode classification. Special types of fibers. Slab waveguides and planar optical waveguides. Transmission in optical fibers: Attenuation mechanisms. Classification of dispersion mechanisms, material dispersion and waveguide dispersion. Transmission equation in single-mode fibers. Transmission of Gaussian pulses when subjected to GVD & TOD, transmission of arbitrary shape pulses, effect of source finite spectral width. Limitation in maximum bit-rate due to dispersion. Light sources: Laser basic principles, light emission in semiconductors, laser diodes (LD), types of LD (Fabry-Perot, Edge Emitting, VCSEL), operation characteristics, modulation. Light Emitting Diodes (LED). Coupling with fibers. Optical detectors: PIN photodiodes and avalanche photodiodes. Direct detection optical receiver: noise sources (thermal, quantum and dark current noise), quantum limit, signal-to-noise ration (SNR), typical receivers, receiver sensitivity, factors that restrict receiver sensitivity. Optical communication systems: Intensity Modulation / Direct Detection (IM/DD) systems, basic architectures, design restrictions, multiplexing techniques (Optical Time Division Multiplexing OTDM, Wavelength Division Multiplexing WDM). Coherent optical communication systems (BPSK, QPSK).
optical fibers, transmission of optical signals, laser, laser diodes, photodiodes, optical receivers, optical communication systems
Educational Material Types
  • Notes
  • Slide presentations
  • Book
Use of Information and Communication Technologies
Use of ICT
  • Use of ICT in Course Teaching
  • Use of ICT in Communication with Students
  • Use of ICT in Student Assessment
Course Organization
Laboratory Work150.5
Student Assessment
Written Examination (180 min). Assessment of optional project.
Student Assessment methods
  • Written Exam with Multiple Choice Questions (Formative, Summative)
  • Written Exam with Short Answer Questions (Formative, Summative)
  • Written Exam with Extended Answer Questions (Formative, Summative)
  • Written Assignment (Formative, Summative)
  • Written Exam with Problem Solving (Formative, Summative)
Course Bibliography (Eudoxus)
1. Συστήματα Επικοινωνιών με Οπτικές Ίνες Κωδικός Βιβλίου στον Εύδοξο: 18548902 Έκδοση: 4η Έκδοση/2011 Συγγραφείς: Agrawal Govind P. ISBN: 978-960-418-336-4 Τύπος: Σύγγραμμα Διαθέτης (Εκδότης): ΕΚΔΟΣΕΙΣ Α. ΤΖΙΟΛΑ & ΥΙΟΙ Α.Ε
Additional bibliography for study
Υπάρχουν διαθέσιμες σημειώσεις του διδάσκοντα, οι οποίες διανέμονται σε ηλεκτρονική μoρφή: Κριεζής Εμμανουήλ Ε., Οπτικές Επικοινωνίες, σελίδες 175.
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