The post-amplifier module is directly fed by the pre-amplifier module and outputs the high optical power level required to feed the Passive Optical Network (PON). There are two main types of post- amplifiers, double-wide and single-wide.The double-wide post-amplifier module is normally used in a temperature controlled Headend or CO environment. The double-wide post-amplifier module is available in a variety of output port counts (8 to 24 ports). These modules are configured with high density LC/APC optical connectors.The single-wide post-amplifier module is temperature hardened for use in applications having less temperature control than a headend or CO environment. The single-wide post-amplifier modules have 4 output ports at 17, 18.5, and 19.5 dBm per port, and are configured with SC/APC optical connectors.