Cisco 15216-DCU-1150= Data Sheet
Data Sheet
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Cisco ONS 15216 Dispersion Compensator Unit
Product Overview
As metropolitan (metro) transport networks grow from 2.5-generation (2.5G) services to 10G and
eventually 40G, the underlying optical systems need to compensate for the lower chromatic
dispersion tolerances on the 10G and 40G interfaces. In optical networks, the dispersion
compensation unit (DCU) compensates for accumulated chromatic dispersion effect in fiber. It
provides a flexible solution for accumulated chromatic dispersion without dropping and
regenerating the wavelengths on the link, a process that would otherwise be necessary when
accumulated chromatic dispersion exceeds the maximum allowed dispersion tolerance. To provide
effective compensation, the DCU is designed to operate over the entire band from 1525 to1565
nm.
Features and Benefits
The Cisco ONS 15216 Dispersion Compensator Shelf (Figure 1) is a passive mechanical housing
that is 1 rack unit (1RU) high and fits in a 19- or 23-inch rack or bay.
Figure 1. Cisco ONS 15216 Dispersion Compensator Shelf
The Cisco ONS 15216 Dispersion Compensator Modules (Figure 2) can be installed in the
dispersion compensator shelf in the following configurations:
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The first slot in the shelf is used for east-to-west traffic and the other slot for west-to-east
traffic (Figure 3).
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The first slot in the shelf is used for west-to-east traffic and the other slot for east-to-west
traffic (Figure 3).
●
Both slots can be cascaded together east-to-west (the output of the first module in the first
slot is connected to the input of the second module in the second slot). This configuration
provides higher chromatic dispersion compensation than an individual module can provide
(Figure 4).
●
Both slots can be cascaded together from west to east (the output of the first module in the
first slot is connected to the input of the second module in the second slot). This
configuration provides higher chromatic dispersion compensation than an individual module
can provide (Figure 4).