Syllabus of GTU Optical Communication 6th Sem EC

Syllabus of GTU Optical Communication 6th Sem EC


Electronics &Communication Engineering



Subject Name: Optical Communication

Subject Code: 161005


1. Overview of Optical fiber Communications :

Electromagnetic spectrum, Optical Spectral bands, Evolution of fiber optic

system, Multiplexing Techniques, Elements of an optical fiber

transmission link with the functional description of each block, WDM

concepts, transmission widows, advantages of optical fiber link over

conventional copper systems, applications of fiber optic transmission



2. Optical fibers : Structures, Waveguiding and Fabrication :

Optical laws and definitions, optical fiber modes and configurations, Mode

theory, Step Index and Graded Index (GI) fibers ,single mode and graded

index fibers, Derivation for numerical aperture, V number and modes

supported by step index fiber, mode field ,Numerical aperture and modes

supported by GI fibers, fiber materials, linearly Polarized modes fiber

fabrication techniques, and mechanical properties of fibers, fiber optic



3. Signal Degradation in Optical Fibers :

Attenuation, signal distortion in optical waveguides, pulse broadening in

graded index fiber, Characteristics of Single Mode Fibers, mode coupling,

International Standards for optical transmission fibers.


4. Optical Sources :

Semiconductor Physics background, Light emitting diode (LEDs)-

structures, materials, Figure of merits, characteristics & Modulation. Laser

Diodes -Modes & threshold conditions, Diode Rate equations, resonant

frequencies, structures, characteristics and figure of merits, single mode

lasers, Modulation of laser diodes, Spectral width , temperature effects,

and Light source linearity.


5. Power Launching and Coupling :

Source to fiber power launching, Lensing schemes, fiber-to-fiber joints,

LED coupling to single mode fibers, fiber splicing, Optical fiber connectors.


6. Photodetectors :

Principles of operation, types, characteristics, figure of merits of detectors

photodiode materials, photodetector noise, detector response time,

temperature effects on gain, comparison of photodetectors.


7. Optical Receiver Operation :

Receiver operation, Preamplifier types, receiver performance and

sensitivity, Eye diagrams, Coherent detection, Specification of receivers.


8. Transmission Systems :

Point –to-point link –system considerations, Link power budget and rise

time budget methods for design of optical link, BER calculation


9. Optical Amplifiers :

Semiconductor optical Amplifier, EDFA, Raman Amplifier, Wideband

Optical Amplifiers


10. Advances in Optical Fiber Systems :

Principles of WDM, DWDM, Telecommunications & broadband application,

SONET/SDH, MUX, Analog & Digital broadband, optical switching.


11. Overview of Optical Components :

Optical couplers, Tunable sources and Filters ,optical MUX/DEMUX,

Arrayed waveguide grating, optical add drop multiplexer (OADM), optical

cirulators, attenuators, optical cross connects, wavelength converter,

Mach-Zender Interferometer,


12. Fiber Optical Measurements :

Test Equipments, OTDR , Set ups for Measurement of Attenuation,

Dispersion, NA and EYE pattern .


Text Book:

1. Optical Fiber Communications by Gerd Keiser, 4th Edition (Mc Graw Hill)


Reference Books:

1. Optical Fiber Communication by John M. Senior (PHI/Pearson)

2. Fiber optical communication Technology by Djafar Mymbaev & Lowell L,

Scheiner. (Pearson)

3. Fiber optic Communication Systems by G. Agrawal (John Wiley and sons)List of


Suggested Practical Assignments:

1. Setting -up of Analog/ Digital Optical communication Link

2. Measurement of attenuation characteristics of an optical fiber

3. Measurement of NA of a multimode fiber

4. Measurement of Mode field diameter of a single mode fiber.

5. Measurement of Dispersion of optical fiber

6. Performance of PAM on fiber optic link

7. Performance of PWM on fiber optic link

8. Performance of PPM on fiber optic link

9. Measurement of attenuation with OTDR

10. Measurement of emission wavelength of LED/LASER source

11. Measurement of Data quality with EYE PATTERN

12. Preparation of optical fiber end and practices on splicing/connectorization.

13. Performance of TDM on fiber optic link

14. Setting -up of voice link on Optical communication Link.

15. Performing Experiments on the VI characteristics of the optical Sources.

16. Performing Experiments on the characteristics of the optical detectors.

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