METRObility Optical Systems Radiance CWDM System, Installation & User Manual

Page: 7 / 30

Radiance CWDM System 7
System Description
This section describes the components of the Radiance CWDM System.
CWDM Components
The Radiance CWDM System is comprised of three basic components.
• The multiplexer/demultiplexer (mux/demux) combines four or eight different
channels onto a common network fiber. Data received from the network fiber
is separated back into the individual channels and returned to the local ports.
NETWORK
1410 1430 1390
EXPANSION
1450
TX
RX
TX
RX
C W D M M U X / D E M U X
Network Port Interface Ports Expansion Port
TX
RX
NETWORK
1470 1490 1510 1550 1570 1590 1610 1530
Network Port Interface Ports
C W D M M U X / D E M U X
• The drop/pass module removes one channel from the eastbound network
fiber and delivers it to a local port. The remaining channels are passed
straight through to other nodes on the network.
RX
NETWORK NETWORK
WEST
RX
EAST
1550
TX TX
O A D M D R O P / P A S S
DROP
Network West Port
Drop Port Network East Port
Wavelength of Drop Port
• The drop/insert module terminates one channel from the network fiber in one
direction and delivers it to a local port. It also allows a second local port to
add the same channel back onto the network fiber in the opposite direction.
TX
RX
NETWORK NETWORK
WEST
TX
RX
EAST
1550
O A D M D R O P / I N S E R T
Wavelength of Drop & Insert Ports
DROP
INSERT
Network West Port Drop Port Network East Port Insert Port
The following examples use four channels, however, the principles are appli-
cable to all. The only exception is the expansion feature, which only applies to
the four-channel mux/demux. A dual fiber configuration is assumed.
CWDM applications are described in terms of an east-west connection. Different
colors represent individual channels. Westbound traffic is represented by dashed
lines; eastbound traffic is shown with solid lines.
WEST EAST