Specifications
CHAPTER
1-1
Cisco ONS 15216 EDFA Operation Guide
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1
Applications
The Cisco ONS 15216 EDFA1 provides bandwidth-on-demand to extend DWDM links by hundreds of
kilometers. This manual describes how to install and operate the ONS 15216 EDFA1, which is a
DWDM-enabling technology for multiservice ring DWDM networks. The ONS 15216 EDFA1 is part of
the Cisco ONS 15216 metro regional DWDM product line that includes red and blue terminal filters, a
one-channel and two-channel optical add/drop multiplexer (OADM), and an optical performance
manager (OPM).
The ONS 15216 EDFA1 is a C-band EDFA that has constant gain control, gain-flatness, transient
suppression, and low-noise figure optimized for metro DWDM applications. These features enable the
ONS 15216 EDFA1 to add/drop optical signals from a span in a DWDM network without degrading of
the other optical signals in the same span.
Bandwidth-On-Demand
The ONS 15216 EDFA1 uses gain-control technology, which is the ability to keep the amplification per
wavelength constant at all times as wavelengths are added/dropped from an optical fiber. Every
wavelength in an ONS 15216 EDFA1, regardless of number, is guaranteed to be amplified by 23 dB. Any
number of wavelengths can be amplified, as long as the total input power of all wavelengths is between
-29 dBm and -6 dBm. Unlike previous generations of EDFAs, the ONS 15216 reconfigures itself rapidly
to ensure constant gain and gain flatness.
Metro Regional Multi-Service Ring DWDM
Using the Cisco ONS 15216 product family you can build ring-based, multiservice DWDM systems
using the Cisco ONS 15454 platform. DWDM systems that incorporate these two product families
enable you to scale rings of up to 400 km in circumference. At each of the add/drop sites, a service
provider can drop wavelengths to provide a variety of IP/data and TDM services. The Cisco ONS
15216/ONS 15454 solution provides not only a cost-effective method to create the multiservice
environment, but also aggregates and grooms that traffic onto efficiently-packed wavelengths which are
then carried around the DWDM ring.