Page 308 - Optical Switching And Networking Handbook
P. 308
14_200023_Index 1/17/01 10:09 AM Page 293
Index 293
DWDM (Dense Wave Division E
Multiplexing), 25, 110, 114
advantages with future upgrades, 232–233 economics of optical networks, 220
applications ECSA (Exchange Carriers Standards
ISPs, 218 Association), SONET standards, 54
long distance carriers, 165 EDFAs (Erbium-Doped Fiber
bandwidth advantages for cable, 227 Amplifiers), 121
capacities, 116 EIA (Electronics Industry Association), wire
wavelength, 112 specifications, 31
composite optical signal, 120 equipment damage to cable, 50
cost efficiency, 230–231 example of fiberoptic usage, 20–21
costs, 219, 225
EDFAs (Erbium-Doped Fiber
Amplifiers), 121 F
filtration, 121
Fast Ethernet, 30
flexibility, 207
Fax over IP, 242
future developments, 120, 247–248
FDDI (Fiber Distributed Data Interface),
ITU-compliant vendors, 171
data rates, 29
matching bandwidth demand to
FDM (Frequency Division Multiplexing), 106
infrastructure, 161
differences from WDM, 109
metropolitan networks
fiberoptics usage example, 21
dynamic OADMs, 133–134
FFTH (Fiber to The Home), 13
ring interconnections, 134
fiberoptics
MORs (Multiwavelength Optical advantages over other media, 44, 115
Repeaters), 117 amplifiers, 3
multiple services delivery, MANs, 202 angle of incidence, 45
OADMs (Optical Add-Drop Multiplexers), attenuation, 36
channel flexibility, 224–225 backbone of modern communications,
opportunity costs, 233 15–16
optical switching, WANs, 128 backhoe fade, 50
photonic networks, 170 bandwidth, 9, 51
scalability, 163 basic components, 33–34
uses, 205–206 bending issues, 49
wavelengths, 116 bending radius, 45
tolerances, 119 benefits over other media, 44, 114
dynamic OADMs, (Optical Add-Drop BER (Bit Error Rate), 18
Multiplexers), 133–134 blue band wavelengths, 111
chemicals of composition, 38
