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Book Reviews – Free Space Optical Networks for Ultra-Broad Band Services

Free Space Optical Networks for Ultra-Broad Band ServicesThis book provides a comprehensive description of an optical communications technology known as free space optical a next-generation communications network that uses optical signals through the atmosphere instead of fiber, RF, or microwaves. This technology potentially offers more complex ultra bandwidth communication services simultaneously to multiple users and in a very short time, compared to fiber optic technology. This text presents established and new advancements drawn from the latest research and development in components, networking, operation, and practices.

This book describes the FSO network concepts in simple language. It provides comprehensive coverage in an easy-to-understand, progressive style that starts from the physics of the atmosphere and how it affects optical communications; continues with the design of a network node; and concludes with fiberless network applications from point-to-point to mesh topology. Important areas discussed include:

  • Propagation of light in the atmosphere and phenomena that affect light propagation
  • FSO transceiver design
  • Point-to-point FSO systems
  • Ring FSO systems
  • Mesh-FSO systems and integrating the Mesh-FSO with the public network
  • WDM Mesh-FSO
  • FSO network security
  • FSO-specific applications

To meet the needs of both academia and industry, key mathematical formulas are presented along with descriptions, while extensive mathematical analyses are minimized or avoided. Free Space Optical Networks for Ultra-Broad Band Services serves as an ideal text for network communication professionals who enter the free space optical communication field, graduate students majoring in optical communications, optical communication engineers, researchers, managers, and consultants.

1.1 Introduction
1.2 Laser Beam Characteristics
1.2.1 Wavelength
1.2.2 Beam Profi le and Modes
1.2.3 Beam Divergence
1.2.4 Rayleigh Range
1.2.5 Near-Field and Far-Field Distribution
1.2.6 Peak Wavelength
1.2.7 Degree of Coherence
1.2.8 Photometric Terms
1.2.9 Radiometric Terms
1.2.10 Beam Power and Intensity
1.2.11 The Decibel Unit
1.2.12 Laser Safety
1.2.13 Classifi cation of Lasers
1.3 Atmospheric Layers
1.4 Atmospheric Effects on Optical Signals
1.4.1 Refractive Index of Air
1.4.2 Atmospheric Electricity
1.4.3 Atmospheric Tide
1.4.4 Defi nitions Parts Per Million by Volume (PPMV) Visibility
1.4.5 Absorption and Attenuation
1.4.6 Fog
1.4.7 Smog
1.4.8 Rain
1.4.9 Snow
1.4.10 Solar Interference
1.4.11 Scattering Rayleigh Scattering Mie Scattering Geometric Scattering
1.4.12 Scintillation
1.4.13 Wind and Beam Wander
1.5 Coding for Atmospheric Optical Propagation
2.1 Introduction
2.2 Light Sources
2.2.1 Laser Classifi cation Based on Reach
2.2.2 Parameters of Laser Sources
2.2.3 Light Emitting Diodes
2.2.4 LASERs Fabry-Perot Semiconductor Lasers Bragg Lasers VCSEL Lasers Titanium-doped Sapphire Lasers Laser Comparison
2.3 Modulators
2.3.1 The Amplitude Modulation
2.4 Photodetectors and Receivers
2.4.1 Cut-off Wavelength
2.4.2 Photodetector Parameters
2.4.3 The PIN Photodiode
2.4.4 The APD Photodiode
2.4.5 Photodetector Figure of Merit
2.4.6 Silicon and InGaAS Photodetectors Silicon-based Photodetectors InGaAs-based Photodetectors Ge-based Photodetectors Selecting a Photodetector
2.5 Optical Amplifi cation
2.5.1 Optical Amplifi er Characteristics
2.5.2 Semiconductor Optical Amplifi ers
2.5.3 Optical Fiber Amplifi ers
2.5.4 Erbium Doped Fiber Amplifi ers
2.6 Optical Signal to Noise Ratio
2.6.1 Signal Quality
2.6.2 Signal Quality Monitoring Methods
2.7 Acquisition, Pointing and Tracking
2.7.1 Acquisition
2.7.2 Pointing
2.7.3 Tracking
2.7.4 Corner Cube Refl ectors
2.8 Adaptive and Active Optics
2.8.1 Methods for Adaptive Optics and Active Optics
2.8.2 The Reference Star
2.9 Laser Safety
2.10 Node Housing and Mounting
3.1 Introduction
3.2 Simple PtP Design
3.2.1 Simple PtP Transceiver Design
3.2.2 Effect of Wind on LoS
3.2.3 Simple PtP Power Budget Estimation
3.2.4 Modeling Atmospheric Loss
3.3 Point-to-Point with Transponder Nodes
3.3.1 PtP Transceiver Design with Add-Drop
3.3.2 Power Budget for PtP with Add-Drop Nodes
3.4 Hybrid FSO and RF
3.5 FSO Point-to-Multipoint
3.6 FSO Point-to-Mobile
4.1 Introduction
4.2 Ring Topologies and Service Protection
4.3 Ring Nodes with Add-Drop
4.4 Concatenated Rings
4.5 Ring to Network Connectivity
5.1 Introduction
5.2 FSO Nodes for Mesh Topology
5.2.1 Parameters Pertinent to FSO Mesh Topology
5.2.2 Mesh-FSO Node Design
5.2.3 Mesh-FSO Network Protection
5.2.4 Mesh-FSO Scalability
5.3 Hybrid Mesh-FSO with RF
5.4 Hybrid FSO-Fiber Networks
6.1 Introduction
6.2 Light Attributes
6.3 Optical Media
6.3.1 Homogeneous and Heterogeneous Media
6.3.2 Isotropy and Anisotropy
6.3.3 Propagation of Light in Transparent Dielectric Medium Phase Velocity Group Velocity
6.4 Interaction of Light with Matter
6.4.1 Refl ection and Refraction—Snell’s Law
6.4.2 Polarization of Light and Matter Polarization Vector Transverse Wave Circular, Elliptical and Linear Polarization
6.5 Medium Birefringence
6.6 DWDM and CWDM Optical Channels
6.6.1 The DWDM Grid
6.6.2 The CWDM Grid
6.7 WDM FSO Links
6.8 WDM Mesh FSO Networks
6.8.1 Mesh Network Engineering
6.8.2 Link Alignment
6.8.3 Mesh-Network Optimization
6.9 Service Protection in Mesh-FSO Networks
6.9.1 Link Degradation
6.9.2 Link Hard Failures
6.9.3 Degradation of a Cluster of Nodes
6.10 WDM Mesh-FSO versus EM-Wireless
7.1 Introduction
7.2 The Ethernet Protocol
7.2.1 Gigabit Ethernet
7.2.2 10 Gigabit Ethernet
7.3 The TCP/IP Protocol
7.3.1 The Transmission Control Protocol
7.3.2 The User Datagram Protocol
7.3.3 The Real Time Transport Protocol
7.3.4 The Internet Protocol
7.4 The ATM Protocol
7.5 Wireless Protocols
7.5.1 Wi-Fi
7.5.2 WiMAX
7.5.3 Comparison of WiMAX with Wi-Fi
7.5.4 LTE
7.5.5 Comparison of LTE with WiMAX
7.6 The Next Generation SONET/SDH Protocol
7.6.1 The Legacy SONET/SDH
7.6.2 SONET Frames
7.6.3 Virtual Tributaries and Tributary Units
7.6.4 STS-N Frames Concatenation Scrambling Maintenance
7.7 Next Generation SONET/SDH Networks
7.7.1 Next Generation Ring Networks
7.7.2 Next Generation Mesh Networks Next Generation Mesh Networks: Protection Next Generation Mesh Networks: Traffi c Management Next Generation Mesh Networks: Wavelength Management Next Generation Mesh Networks: Network Management Next Generation Mesh Networks: Service Restoration
7.8 Next Generation Protocols
7.8.1 Concatenation in NG-S Contiguous Concatenation Virtual Concatenation
7.9 The GMPLS Protocol
7.9.1 Before GMPLS: MPLS
7.9.2 The GMPLS
7.10 The GFP Protocol
7.10.1 GFP Header, Error Control and Synchronization
7.10.2 GFP Frame Structure
7.10.3 GFP-F and GFP-T Modes
7.11 The LCAS Protocol
7.12 The LAPS Protocol
7.13 Any Protocol over SONET/SDH
7.13.1 EXAMPLE 1: IP over LAPS over NG-S
7.13.2 EXAMPLE 2: Any Payload over LAPS over Next NG-S over WDM
8.1 Introduction
8.2 Cryptography
8.3 Security Levels
8.4 Security Layers
8.4.1 Security on the Information Layer
8.4.2 Security on the MAC/Network Layer
8.4.3 Security on the Link Layer
8.4.4 FSO-WLAN Security
8.5 FSO Inherent Security Features
8.5.1 FSO Beam Overspill
8.5.2 Beam Tapping
8.5.3 FSO Cable Tapping
8.6 Conclusion
9.1 Introduction
9.2 FSO Networks for Highway Assisted Communications
9.3 Mesh-FSO in Disaster Areas
9.4 Visual Light Communication
9.5 Conclusion

Book Reviews – Free Space Optical Networks for Ultra-Broad Band Services

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