METRObility Optical Systems Radiance CWDM System, Инструкция по установке и эксплуатации

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8 System Description
Mux/Demux
The mux/demux provides four interface ports, each mapped to a different
wavelength. The mux/demux combines the channels and transmits them on a
single outbound (TX) fiber. Simultaneously, the mux/demux receives the same
four channels from a single inbound (RX) fiber, separates them into individual
wavelengths, and delivers each to the appropriate local interface. This process
quadruples the capacity of the existing network fiber cable.
Mux/Demux
T
X
R
X
WEST EAST
Local Interfaces
Mux/Demux
Local Interfaces
R
X
T
X
Single Fiber Pair
Expansion Port
The four-channel mux/demux can be configured to support additional channels
through the expansion port. By cascading the modules in series, you can
increase the total number of available network channels, up to 16. The channels
connecting to the expansion port must differ from those on the mux/demux to
which they are being cascaded.
In the following illustration, a four-channel module is connected to an eight-
channel module to transport 12 separate channels, each with a different wave-
length.
NETWORK
1370
1430 1350
EXPANSION PORT
1450
C W D M M U X / D E M U X
TX
TX
TX
RX
Channels 1-8
Channels 1-12
RX
TX
NETWORK
1470 1490 1510 1550 1570 1590
1610
1530
1 2 3 4 5 6 7 8
C W D M M U X / D E M U X
9 10 11 12