The module can be deployed with the initial DWDM installation to make the DWDM system compatible with future versions and to avoid traffic downtime when the additional capacity is required. The module allows for a further 32-channel expansion into the L-band.

To accomplish this upgrade a C+L-band splitter/combiner is required for multiplexing and demultiplexing the C and L bands. The Cisco ONS 15216 C+L-Band Splitter/Combiner Module incorporates a multiplexing section that combines the C and L bands into a composite signal for transmission over Cisco ONS 15454 Multiservice Transport Platform (MSTP) DWDM systems.

The demultiplexer section splits the composite signal into the C and L band spectrums prior to further channel demultiplexing by the Cisco ONS 15454 MSTP ROADM. The equipment is housed in a passive Cisco ONS 15216 FlexLayer module and mounted in the Cisco ONS 15216 FlexLayer 4-slot 1-rack-unit (RU) shelf unit. This module extracts a small part of the composite DWDM signal at the splitter and combiner for monitoring purposes. The module is completely (optical and electrical) passive.

The unit is a bidirectional unit, in which the splitter function and the combiner function are implemented in two different sections so that signal flowing in opposite directions can be managed separately. The splitter section includes a tap coupler, allowing aggregate (C+OSC+L) received channels spectrum monitoring at the input (MON-LINE port), followed by a band-pass filter to split C-band plus optical supervisory channel (OSC) signals (SPL-TXC port) and the L-band signal (SPL-TXL port). The combiner section includes a band-pass filter, to combine C-band plus OSC signals (CPL-RXC port) and the L-band signal (CPL-RXL port), followed by a tap coupler allowing aggregate (C+OSC+L) transmitted optical channels spectrum monitoring at the output (MON-CPL port).

For more information about the status of this product, please email our Sales Representatives at sales@usedcerent.com.

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