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Chapter 1 Describing the optical routing system 21
Installation and Networking Guidelines for Optical Routing
Figure 5 shows an example of two separate fiber paths in a ring configuration
traveling in opposite or east/west directions into the network.
Figure 5 CWDM OADM ring configuration example
For information on calculating network transmission distance, see Chapter 2,
“Calculating transmission distance,” on page 27.
Optical multiplexer/demultiplexer description
The passive CWDM OMUX sends and receives signals to/from CWDM GBIC
transceivers installed in the switch. It multiplexes and demultiplexes four or eight
CWDM wavelengths from a two-fiber (east and west) circuit. It allows you to
create uni-directional network traffic rings or point-to-point links.
The CWDM OMUX (Figure 6) is installed in a 19-inch, rack-mounted 1RU
optical shelf (Figure 15).
OADM
OMUXOMUX
OFFICE
BUILDING B
OADM
OADM
PP 8600
PP 8600
OFFICE
BUILDING C
PP 8600
OFFICE
BUILDING A
CARRIER
HOTEL SITE
PP 8600
PP 8600