Page 311 - Optical Switching And Networking Handbook

14_200023_Index 1/17/01 10:09 AM Page 296

296 Index

ISDN (Integrated Services Digital
Networks), 82 M
ISPs (Internet Service Providers)
demand for bandwidth, 160 M13 Asynchronous Protocol, 58
MANs (Metropolitan Area Networks), 127
DWDM, 161 DVDM cost efficiency, 231
applications, 218 multiple services delivery, 202
ITU-TS (International Telecommunications optical switching, 127–129, 132
Union-Telecommunications interconnectoin types, 131
Standardization Sector ), 83 size issues, 130
mapping VCs to tributary unit levels,
SDH, 91
L master clocks, asynchronous
transmission, 58
LambdaRouter, 140 material dispersion, 36
LANs (Local Area Networks), 28 Mbps (Megabit per second), 57
lasers (Light Amplification by Simulated MEMS (MicroElectroMechanical
Emission of Radiation), 4, 46
characteristics, 48 Systems), 136
improvement in fiber loss, 12 ease of upgrades, 145
modulation, 51 micromirrors, 136, 143
optical switching, 137–138, 141–143
OC-192, wavelength tolerances, 119 TEAMFLY
scalability, 144
signal transfer, 33 steered beam configuration, 145
layers of SDH model, 102 upgrades, 145
LEDs (Light-Emitting Diodes), 6, 46 metropolitan DWDM networks
characteristics, 47 dynamic OADMs, 133–134
signal transfer, 33 ring interconnections, 134
light sources, 46 micromirrors, MEMS, 136, 143
light spectrum, 34 misconceptions of fiberoptics, 17–18
line overhead, SONET, 65, 68–69 modal dispersion, 5, 36
line rates, SONET, 62 modal noise, 36
links, SONET, 68 modems, fiberoptics, 3
local carriers, wire categories, 32 modulation, 51
locked payloads, STS-1 frames, 67 modulators, signal conversion, 3, 33
long distance carriers MORs (Multiwavelength Optical Repeaters),
DWDM uses, 165 DWDM, 117
fiberoptics usage, 22
losses, 37 MSPH (multiplexer overhead), SDH, 102
LTE (Line-Terminating Equipment), SONET multimode fiberoptics, 5, 19
overhead, 68 graded index cable
path lengths, 42

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