632
Appendix C: Acronyms
(continued)
RWA
Routing and wavelength assignment
RZ
Return-to-zero
SAM
Separate-absorption-and-multiplication (APD)
SBS
Stimulated Brillouin scattering
SCM
Subcarrier modulation
SDH
Synchronous digital hierarchy
SFDR
Spur-free dynamic range
SFF
Small-form-factor
SFP
Small-form-factor (SFF) pluggable
SHF
Super-high frequency (3-to-30 GHz)
SLED
Superluminescent light emitting diode
SLM
Single longitudinal mode
SNMP
Simple network management protocol
SNR
Signal-to-noise ratio
SOA
Semiconductor optical amplifier
SONET
Synchronous optical network
SOP
State of polarization
SPE
Synchronous payload envelope
SPM
Self-phase modulation
SRS
Stimulated Raman scattering
SSMF
Standard single mode fiber
STM
Synchronous transport module
STS
Synchronous transport signal
SWP
Spatial walk-off polarizer
TCP
Transmission control protocol
TDFA
Thulium-doped fiber amplifier
TDM
Time-division multiplexing
TDMA
Time-division multiple access
TE
Transverse electric
TEC
Thermoelectric cooler
TFF
Thin-film filter
TIA
Telecommunications Industry Association
TM
Transverse magnetic
UHF
Ultra-high frequency (0.3-to-3 GHz)
UI
Unit interval
UPSR
Unidirectional path-switched ring
VAD
Vapor-phase axial deposition
(continued)