Network & Communication

Coarse Wave Division Multiplexing (CWDM) has gained prevalence in multi-wavelength digital transport architectures because it enables the use of very low cost un-cooled DFB laser transmitters. Moreover, powering requirements are reduced and reliability is increased.

Prisma® CWDM filters provide the essential wavelength muxing/demuxing in these systems. Configurations of 1, 4, 8 or 10 channels are available to provide maximum design flexibility. The single channel version can be ordered in any of the 10 standard ITU-grid wavelengths and functions as Optical Add-Drop Mux (OADM). The 4, 8 and 10 channel versions are designed for minimum flat insertion loss.

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.

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.