OPTICAL FIBER COMMUNICATION BY V S BAGAD PDF

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Optical Fiber Communications. Block diagram of optical fiber communication system, Advantages of optical fiber communication.

Optical Fiber Waveguides : Structure of optical waveguide, Light propagation in optical fiber using ray theory, Acceptance angle, Numerical aperture, Skew rays, Wave theory for optical propagation, Modes in a planar and cylindrical guide, Mode volume, Single mode fibers, Cut-off wavelength, Mode field diameter, Effective refractive index and group and mode delay factor for single mode fiber.

Transmission Characteristics of Optical Fiber : Attenuation in optical fibers, Intrinsic and extrinsic absorption, Linear and nonlinear scattering losses, Fiber bend losses. Dispersion and pulse broadening, Intramodal and intermodal dispersion for step and graded index fibers, Modal noise, Overall fiber dispersion for multimode and monomode fiber, Dispersion shifted fibers, Modal birefringence and polarization maintaining fibers.

Optical Sources : Basic concepts Einstein relations and population inversion optical feedback and threshold conditions, Direct and indirect band gap semiconductors, Spontaneous and stimulated emission in p-n junction, Threshold current density, Heterojunction and DH structure, Semiconductor injection lasers structure and characteristics of injection laser.

Optical Detectors : Requirement for photo detections p-n photodiode, Characteristics of photo detections, p-i-n and avalanche photodiodes, Phototransistors and photoconductors. Optical Fiber Communication Systems : Principal components of an optical fiber communication system, Source laminations, Optical transmitter circuits, LED and laser drive circuits, Optical receiver block diagram, Simple circuits for pre-amplifier, Automatic gain control and equalization, Regenerative repeater, BER of optical receiver, Channel losses, ISI penalty and optical power budgeting for digital optical fiber system, Line coding, Analog systems, Direct intercity and sub carrier intensity modulation using AM, FM and PM.

Block diagram and detection principle of coherent optical fiber system. Review Questions. Important Formulae 5 Design Guidelines. Points to Remember 7. Optical Fiber Communications V. Optical Communications V.

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Optical Fiber Communications. Overview of Optical Fiber CommunicationAdvantages of optical fiber communication, Basic principles, Fiber modes and configuration, Step index and graded index structures, Fiber materials, Fiber fabrication, Mechanical properties of fibers, Fiber optic cables. Signal Degradation in Optical FibersAttenuation, Signal distrotion in optical waveguides, Pulse broadening in graded index waveguides, Mode coupling, Design optimization of single mode fibers. Optical Sources and DetectorsBasic characteristics of light sources for communication, LED sources and laser diodes sources, Hetero junction structure, Physical principles of photo diodes, PIN photodiodes and avalanche photo diode, Response. Power Launching and CouplingSource to fiber power launching, Lensing schemes for coupling improvement, Fiber to fiber joints, LED coupling to single mode fibers, Fiber splicing, Optical fiber connectors. Optical Receiver OperationFundaments receiver operation, Digital receiver performance calculation, Preamplifier types, Analog receiver. Analog Systems Overview of analog links, Carrier to noise ratio, Multichannel transmission techniques.

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Optical Communications. Overview of optical fiber communication - Historical development, The general system, Advantages of optical fiber communications. Optical fiber waveguides- Introduction, Ray theory transmission, Total internal reflection, Acceptance angle, Numerical aperture, Skew rays. Single mode fibers- Cut-off wavelength, Mode field diameter, Effective refractive index. 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, Waveguide dispersion, Polarization mode dispersion, Intermodal dispersion.

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Optical Fiber Communications. Block diagram of optical fiber communication system, Advantages of optical fiber communication. Optical Fiber Waveguides : Structure of optical waveguide, Light propagation in optical fiber using ray theory, Acceptance angle, Numerical aperture, Skew rays, Wave theory for optical propagation, Modes in a planar and cylindrical guide, Mode volume, Single mode fibers, Cut-off wavelength, Mode field diameter, Effective refractive index and group and mode delay factor for single mode fiber. Transmission Characteristics of Optical Fiber : Attenuation in optical fibers, Intrinsic and extrinsic absorption, Linear and nonlinear scattering losses, Fiber bend losses. Dispersion and pulse broadening, Intramodal and intermodal dispersion for step and graded index fibers, Modal noise, Overall fiber dispersion for multimode and monomode fiber, Dispersion shifted fibers, Modal birefringence and polarization maintaining fibers. Optical Sources : Basic concepts Einstein relations and population inversion optical feedback and threshold conditions, Direct and indirect band gap semiconductors, Spontaneous and stimulated emission in p-n junction, Threshold current density, Heterojunction and DH structure, Semiconductor injection lasers structure and characteristics of injection laser. Optical Detectors : Requirement for photo detections p-n photodiode, Characteristics of photo detections, p-i-n and avalanche photodiodes, Phototransistors and photoconductors.

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