Chapter 6: Optical Routing Design; Optical Routing System Components - Avaya 8800 Planning And Engineering

Chapter 6: Optical routing design

Use the Avaya optical routing system to maximize bandwidth on a single optical fiber. This section provides
optical routing system information that you can use to help design your network.
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Optical routing system components

• Multiplexer applications
• Transmission distance
• DWDM XFPs
Optical routing system components
The Avaya optical routing system uses coarse wavelength division multiplexing (CWDM) in a
grid of eight optical wavelengths. CWDM Gigabit Interface Converters (GBIC) and Small Form
Factor Pluggable (SFP) transceivers transmit optical signals from Gigabit Ethernet ports to
multiplexers in a passive optical shelf.
Multiplexers combine multiple wavelengths traveling on different fibers onto a single fiber. At
the receiver end of the link, demultiplexers separate the wavelengths and route them to
different fibers, which terminate at separate CWDM devices. The following figure shows
multiplexer and demultiplexer operations.
Important:
For clarity, the following figure shows a single fiber link with signals traveling in one direction
only. A duplex connection requires communication in the reverse direction as well.
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