Specifications

5-9
Cisco ONS 15530 Planning Guide
OL-7708-01
Chapter 5 Amplified Network Planning
Amplified Network Planning Guidelines
Fiber Nonlinearity
To avoid undesirable nonlinear effects, the maximum allowed channel power in ITU-652 compliant
fibers must be limited in the network.
Maximum per-channel power for 10 Gbps channels is 2 dBm when there are at most three
post-amplifiers, and 0 dBm when there are at most five post-amplifiers.
Maximum per-channel power for 2.5 Gbps channels is 5 dBm when there are at most five
post-amplifiers.
Other types of fibers, such as ZSDF, LEAF and Truewave are not supported by these rules and must be
treated separately as special cases.
OSC
The OSC (Optical Supervisory Channel) is a 1562-nm node-to-node communication channel. Because
it is within the C-band range, it is also amplified by the Cisco ONS 15501 EDFA. All the rules for data
channels, such as receiver power levels, OSNR, optical gains and losses, and dispersion, also apply to
the OSC.