Unit 1 Optical Fiber Waveguide 1.1 Optical fiber waveguide

10 lecture hours

• 1.1.1 Ray propagation in step index fiber
• 1.1.2 Numerical Aperture and acceptance angel
• 1.1.3 Skew rays and Meridional rays
• 1.1.4 Optical signal as a EM wave with mode concept
• 1.1.5 V-number & normalized frequency. 1.2 Types of Optical Fiber: 1.2.1 Step Index and Graded Index
• 1.2.2 Single Mode and Multi-Mode
• 1.2.3 Cut off wavelength. 1.3 Attenuation: 1.3.1 Absorption losses: intrinsic and extrinsic
• 1.3.2 Linear scattering losses: Rayleigh and Mie, 1.3.3 Fiber bend losses: micro and macro. 1.4 Dispersion: 1.4.1 Intermodal Dispersion in Multi-mode Step Index fiber
• 1.4.2 Intra-modal (Chromatic) Dispersion: material and Wave guide dispersion
• 1.5 General configuration of Fiber optic communication system

Unit 2 Optical Fiber

10 lecture hours

• Cables & Connections 2.1Fiber Fabrication 2.1.1 Fiber Materials
• 2.1.2 Double crucible method. 2.1.3 Vapor deposition methods: MCVD, VAD, 2.1.4 Fiber drawing process. 2.2Fiber Optic Cables: 2.2.1 Needs of cabling. 2.2.2 Fiber Cables: Slotted core
• loose tube and multi-fiber ribbon. 2.3Connection losses: Program Name: Diploma Engineering Level: Diploma Branch: Electronics and Communication Engineering Subject Code : DI04011021 Subject Name : Optical Communication 2.3.1 Extrinsic Parameters: Fresnel reflection
• Misalignment, and other factors
• 2.3.2 Intrinsic Parameters: NA mismatch
• diameter mismatch
• 2.3.3 Fiber end preparation for loss minimization. 2.4Splices: 2.4.1 Fusions Splices
• 2.4.2 Mechanical splices: Capillary
• Loose tube
• spring groove and elastomeric splices. 2.5 Fiber optic connector’s types as per TIA, IEC and ANSI standards. 2.6 SOP for Fiber cable laying

Unit 3 Optical Sources and Detectors

12 lecture hours

• 3.1 Basic concepts of Absorption and Emission in semiconductor. 3.2 Characteristic of ideal optical source. 3.3 Construction and Operating Principle of LED. 3.4Concept of Heterojunctions LED structure: 3.4.1 SLED
• 3.4.2 EELED. 3.5 Construction and Operating Principles of Semiconductor LASER Diode. 3.6 Quantum efficiency and Responsivity. 3.7 Photo diodes 3.7.1 p-n photodiode
• 3.7.3 Avalanche photodiode. 3.8 Coupling between fiber and Source/ detector: 3.8.1 Source to fiber
• 3.8.2 Fiber to detector. 3.9 LED driver circuit (digital) 3.10 LASER driver circuit (digital). 3.11 Optical receiver block diagram. 3.12 Regenerative repeater

Unit 4 Optical Components 4.1 Optical components

• types and functions 4.1.1 Optical Coupler
• 6 14% Program Name: Diploma Engineering Level: Diploma Branch: Electronics and Communication Engineering Subject Code : DI04011021 Subject Name : Optical Communication 4.1.2 Optical switches
• 4.1.3 Beam splitter
• 4.1.4 Optical multiplexer and demultiplexer. 4.1.5 Optical wavelength converter. 4.1.6 Isolators. 4.2 Concept of Bragg grating. 4.3 Optical Amplifiers: 4.3.1 Semiconductor Optical Amplifiers
• 4.4 Raman amplifier

Unit 5 Optical parameter measurement and applications of WDM 5.1 Fiber parameters measurement

7 lecture hours

• 5.1.2 Numerical Aperture
• 5.1.3 Inter modal dispersion
• 5.1.4 Refractive Index profile. 5.2Optical power meter. 5.3 Optical time domain reflectometer. 5.4 WDM & DWDM. 5.5 SONET/SDH
• FTTP. 5.6 E-waste Management of Optical waste