Optical Amplifier (Edfa) Modules - Cisco GS7000 Installation And Operation Manual

Optical Amplifier (EDFA) Modules

Optical Amplifier Module Descriptions
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. (Gain-flattened) EDFAs are used for the amplification of
multiple optical channels. For uniformity of performance, 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 (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 (gain-flattened) EDFA is constant gain mode.
The table below lists the part number and description of the new gain-flattened
EDFA:
Part Number
GS7K-GFEDFA-17L=
GS7K-GFEDFA-17H=
GS7K-GFEDFA-21L=
Description
17 dBm gain flattened low gain EDFA
17 dBm gain flattened high gain EDFA
21 dBm gain flattened low gain EDFA

Optical Amplifier (EDFA) Modules

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