FIBER OPTICAL COMMUNICATIONS
COURSE OBJECTIVES:
I. To realize the significance of optical fiber communications.
2. To understand the construction and characteristics of optical fiber cable.
3. To develop the knowledge of optical signal sources and power launching.
4. To identify and understand the operation of various optical detectors.
S. To under the design of optical systems and WDM.
UNIT!
OVERVIEW OF OPTICAL FIBER COMMUNICATION: Introduction, The general Optical Fiber
communication system, advantages of optical fiber communications. Optical fiber wave guides-
Introduction, Ray theory transmission, Total Internal Reflection, Acceptance angle, Numerical
Aperture, Skew rays. Cylindrical fibers- Modes
Fiber materials, Fiber fabrication techniques, fiber optic cables, Classification of Optical Fibers:
Single mode fibers, Graded Index fibers.
UNITII
SIGNAL DISTORTION IN OPTICAL FIBERS: Attenuation, Absorption, Scattering and Bending losses, Core
and Cladding losses. Information capacity determination, Group delay, Types of Dispersion -
Material dispersion, Wave-guide dispersion, Polarization mode dispersion, lntermodal dispersion,
pulse broadening.
Optical fiber Connectors- Connector types, Single mode fiber connectors, Connector return loss.
Introduction to Optical Fibers splicing
UNITIII
OPTICAL SOURCES: Intrinsic and extrinsic material-direct and indirect band gaps-LEO-LED structures-
surface emitting LEO-Edge emitting LED-quantum efficiency and LED power-light source materials-
modulation of LED.
COURSE OBJECTIVES:
I. To realize the significance of optical fiber communications.
2. To understand the construction and characteristics of optical fiber cable.
3. To develop the knowledge of optical signal sources and power launching.
4. To identify and understand the operation of various optical detectors.
S. To under the design of optical systems and WDM.
UNIT!
OVERVIEW OF OPTICAL FIBER COMMUNICATION: Introduction, The general Optical Fiber
communication system, advantages of optical fiber communications. Optical fiber wave guides-
Introduction, Ray theory transmission, Total Internal Reflection, Acceptance angle, Numerical
Aperture, Skew rays. Cylindrical fibers- Modes
Fiber materials, Fiber fabrication techniques, fiber optic cables, Classification of Optical Fibers:
Single mode fibers, Graded Index fibers.
UNITII
SIGNAL DISTORTION IN OPTICAL FIBERS: Attenuation, Absorption, Scattering and Bending losses, Core
and Cladding losses. Information capacity determination, Group delay, Types of Dispersion -
Material dispersion, Wave-guide dispersion, Polarization mode dispersion, lntermodal dispersion,
pulse broadening.
Optical fiber Connectors- Connector types, Single mode fiber connectors, Connector return loss.
Introduction to Optical Fibers splicing
UNITIII
OPTICAL SOURCES: Intrinsic and extrinsic material-direct and indirect band gaps-LEO-LED structures-
surface emitting LEO-Edge emitting LED-quantum efficiency and LED power-light source materials-
modulation of LED.
