Optical Fiber Com-2

AIMS

To provide the students with an opportunity to develop knowledge, skill and attitude in the area of optical fiber communication with special emphasis on:
• LASER
• Optical detector
• Fiber optic Sensors
• Optical Amplification
• Integrated Optics
• Optical Communication systems
• Measurement Techniques
• Optical fiber Network and its Application & future Development.

SHORT DESCRIPTION

LASER; Optical detector; Fiber optic sensors; Optical amplification; Integrated optics and optical fiber communication systems; Measurement techniques on optical fiber; Optical fiber network; Application and future development of optical fiber.

DETAIL DESCRIPTION

Theory:

1 Understand the features of LASER.
1.1 Define the basic concepts of LASER (LASER operation).
1.2 Define the optical feedback and LASER oscillation.
1.3 Mention different types of LASER.
1.4 Describe the construction of semiconductor LASER diode.
1.5 Describe the emission pattern of LASER.
1.6 Describe the characteristics of LASER.
1.7 Define the modulation response of LASER.
1.8 Describe the basic concept of frequency and mid-infrared LASER.
1.9 Describe the process of fiber LASER coupling.

2 Understand the concept of optical detector.
2.1 Mention the important requirements for optical detector.
2.2 Describe the optical detection principles.
2.3 Mention different types of optical detector.
2.4 Describe the operation of PIN photo detector.
2.5 Describe the operation of avalanche photo diode.
2.6 Mention the benefits and drawbacks of the avalanche photo diode.
2.7 Describe the operation of photo conductive detectors.
2.8 Describe the basic concept of mid-infrared photodiodes.

3 Understand the features of fiber optic sensors.
3.1 Define the basic concepts of fiber optic sensors.
3.2 Mention different types of fiber optic sensors.
3.3 Describe the basic principles of operation of intensity modulated, Liquid level type hybrid, internal effect intensity modulated, phase diffraction grating and interferometric sensors.
3.4 Describe the basic operation of fiber fabry parot (FFP) fiber optic sensor.
3.5 Describe the principles of electric field and voltage sensor.
3.6 Describe the principle of magnetic field and current sensor.
3.7 Mention the basic concept of chemical sensor.

4 Understand the concept of optical amplification.
4.1 Describe the basic concepts of optical amplifiers.
4.2 Describe the principles of operation of semiconductor LASER amplifiers.
4.3 Describe the performance characteristics of Optical Amplification.
4.4 Describe the principles of operation of fiber amplifiers.

5 Understand the concept of optical communication system.
5.1 Mention different types of optical transmitter.
5.2 Describe the operation of typical optical transmitter circuit (LED and LASER drive).
5.3 Describe the operation of analog and digital LASER transmitter.
5.4 Describe the flow chart of analog and digital LASER transmitter.
5.5 Describe the operation of high performance optical receiver and flow chart for design.
5.6 Describe the basic concept of fiber based modems.
5.7 Describe the basic principles of optical multiplexer and DE multiplexer; Wavelength division Multiplexers (WDM); Optical TDM (OTDM)
5.8 Describe the basic concept of optical switches.

6 Understand the concepts of optical fiber communication systems.
6.1 Mention the essential characteristics of long haul communication system.
6.2 Describe the generalized coherent optical fiber system.
6.3 Explain the basic Principle of different types of Detection (Heterodyne, Homodyne).
6.4 Describe the Techniques for endless Polarization control.

7 Understand the measurement techniques on optical fiber.
7.1 List different fiber parameters after the fabrication and characterization of the fiber.
7.2 Describe the fiber attenuation measurement techniques by optical time domain reflectometer.
7.3 Describe the fiber dispersion losses measurement techniques.
7.4 Describe the refractive index measurement techniques.
7.5 Describe the fiber cut off wave length measurement techniques.
7.6 Describe the fiber diameter measurement techniques.

8 Understand the optical fiber network.
8.1 Define optical fiber network.
8.2 Identify the elements of optical fiber network.
8.3 Mention various types of optical fiber network.
8.4 Describe local area network of optical fiber network.
8.5 Describe synchronous optical network.
8.6 Describe fiber distributed data interface (FDDI).
8.7 Describe industrial network of optical fiber.

9 Understand the application and future development of optical fiber.
9.1 Mention the application optical fiber in public network.
9.2 Mention the military application of optical fiber.
9.3 Mention the industrial application of optical fiber.
9.4 Identify the computer application of optical fiber.
9.5 Describe the future of optical fiber communication.

Practical:

1 Study the construction and operation of different types of LASER.
2 Study the operation of PIN detector.
3 Study the operation of Photo Conductive Detector.
4 Study the operation of Infrared Photo diode.
5 Study the operation of voltage and current sensor.
6 Study the operation of semiconductor LASER amplifiers.
7 Study the operation of optical Receiver device.
8 Study the operation of opto electronic repeater chips.
9 Study the techniques of wavelength Multiplexing .
10 Study the operation of Fiber based MODEMs.
11 Study the operation of Optical Switch.
12 Measure the fiber Attenuation.
13 Measure the fiber Dispersion losses.
14 Measure the Refractive index of fiber.
15 Measure the fiber cut of Wavelength.

REFERENCE BOOKS
1. Optical Fiber Communications Principles and Practice
 John M Senior
2. Optical Fiber and Fiber Optic Communication System
 Subir kumar Sarker

3. Fiber Optic Technology – Manbaer & Scheiner

4. Fiber Optic Communication System – G.P. Agarwal

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