Cisco GS7000 - BWDM 1 X2 Red;Blue and 1 X4 Filters

Chapter 3 Setup and Operation
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BWDM 1x2 Red/Blue and 1x4 Filters
These filters can be used in both the forward and reverse paths. The signals are
split using a 1x2 and 1x4 multiplexer/demultiplexer respectively.
The following illustrations show examples of the modules.