Lucent Technologies WaveStar OLS 40G, Руководство по установке

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Issue 1.0 March 2001
2-3
365-575-389
Installation Manual System Installation Planning
WaveStar OLS 40G Basics
Bidirectional
Optical Line An Optical Line System combines multiple wavelengths called optical channels
into a single fiber signal called the optical line. The WaveStar OLS 40G is
deployed as a bi-directional optical line shown in Figure 2-1.
Figure 2-1. Basic Optical Line
It consists of optical multiplex and demultiplex units at each end of the system to
combine and split out the optical channels, telemetry circuit packs to generate and
receive the supervisory channel, and a string of optical amplifiers in each
direction. Three types of offices are shown: 1A-TX End Terminal, Repeater, and
1A-RCV End Terminal. Every OLS will at least have a 1A-TX and 1A-RCV End
Terminal, or be comprised of dual facing shelves to create a ring topology. A
single bi-directional optical line will support a 2-fiber section or a 4-fiber section if
service and protection use different optical channels on the same optical line
(Figure 2-2).
Figure 2-2. Connections to a Single Line
(Continued on next page)
OA
O
M
U
TLM
OA
O
D
U
OA
TLM
OA
TLM
OLS 1A-TX
OLS Repeater
OA
O
M
U
TLM
OA
O
D
U
OLS 1A-RCV
End Terminal End Terminal
E
λ
3
2-Fiber
To/From
Central Office 1
End
Line 1
Line 2
OC-48
λ
5
λ
7
Other
Nodes
4-Fiber
OC-48
Service
Protect
Terminal
E
λ
3 W
2-Fiber
To/From
Central Office 2
End
Line 1
Line 2
OC-48
λ
5
λ
7
Other
Nodes
4-Fiber
OC-48
Service
Protect
Terminal
W