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Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 7 Reconfigurable Optical Add/Drop Cards
7.6 32DMX-L Card
7.6 32DMX-L Card
Note See the “A.7.2 32DMX-L Card Specifications” section on page A-23 for hardware specifications.
Note For 32DMX-L safety label information, see the “7.2 Safety Labels for Class 1M Laser Product Cards”
section on page 7-9.
The single-slot 32-Channel Demultiplexer L-Band card (32DMX-L) is an L band optical demultiplexer.
The card receives an aggregate optical signal on its COM RX port and demultiplexes it into to (32)
100-GHz-spaced channels. The 32DMX-L card is particularly well suited for use in networks that
employ DS fiber or SMF-28 single-mode fiber. The 32DMX-L card can be installed in Slots 1 to 6 and
in Slots 12 to 17.
7.6.1 32DMX-L Faceplate Ports
The 32DMX-L card has two types of ports:
• COM RX port: COM RX is the input port for the aggregate optical signal being demultiplexed. This
port is supported by both a VOA for optical power regulation and a photodiode for optical power
monitoring.
• DROP TX ports (1 to 32): On its output, the 32DMX-L card provides 32 drop ports (listed in
Table 7-21 on page 7-38) that are typically used for dropping channels within the ROADM node.
These ports are connected using four 8-fiber MPO ribbon connectors. Each drop port has a
photodiode for optical power monitoring. Unlike the two-slot 32DMX-O demultiplexer, the drop
ports on the 32DMX-L do not have a VOA per channel for optical power regulation. For a
description of the 32DMX-O card, see the “5.4 32DMX-O Card” section on page 5-16.
Figure 7-15 shows the 32DMX-L card front panel and the basic traffic flow through the ports.
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