Cisco Model GS7000 4-Port Node 1 GHz with 42 54 Split Installation Guide

 

52 

OL-29643-02 

Erbium-doped fiber amplifier modules are available in two categories: broadcast and 
narrowcast (gain-flattened). Broadcast EDFAs are used for the amplification of 
broadcast signals which are carried by a single optical channel anywhere between 
1530 nm and 1565 nm. Narrowcast (gain-flattened) EDFAs are used for the 
amplification of multiple optical channels carrying narrowcast signals. For 
uniformity of performance, narrowcast EDFAs need to be gain flattened in the 
designated operating wavelength range between 1536 nm and 1562 nm. 
Broadcast EDFAs are available in 17 dBm, 20 dBm, and 22 dBm versions. 
Narrowcast (gain-flattened) EDFAs are available in 17 dBm, 20 dBm, and 21 dBm 
versions to fit any architecture for requirements like DWDM narrowcasting. 
Both broadcast and narrowcast (gain-flattened) EDFAs can be operated in constant 
power and constant gain modes. The default setting for a broadcast EDFA is 
constant power mode, while the default setting for a narrowcast (gain-flattened) 
EDFA is constant gain mode. 

 

The table below lists the part number and description of the new gain-flattened 
EDFA: 

GS7K-GFEDFA-17L= 

17 dBm gain flattened low gain EDFA 

GS7K-GFEDFA-17H= 

17 dBm gain flattened high gain EDFA 

GS7K-GFEDFA-21L= 

21 dBm gain flattened low gain EDFA