MDU-16CL-C-50G

The MDU-16CL-C-50G is a 16-channel multiplexer and demultiplexer active optical card. In add direction, it uses 16x1 passive optical combiner and in drop direction, it uses a 1x16 WSS. Any wavelength can be added or dropped from the respective add and drop ports and hence this acts as a colorless MDU. It occupies 2 slots in this node. When this card is used in conjunction with the ROADM cards, a colorless and direction less architecture of the ROADM nodes can be realized.

Front panel

The following figure shows the front panel diagram of MDU-16CL-C-50G card.

MDU-16CL-C-50G (EASM)

Power specifications

MDU-16CL-C-50G - Power specifications

Specification	Range
Input Voltage	-48V DC
Maximum power consumption	40W

Visual indicator details

The visual indicators on the MDU-16CL-C-50G card has two LEDs - the Sts (Status) LED indicate the status of the card and the Act (Active) LED indicates whether the card is active or not.

MDU-16CL-C-50G - Active and status LEDs indications

Card State	Status LED	Active LED
Card initialization: State before the card initialize is complete on card insertion.	Amber (Steady)	Amber (Steady)
Card in service: Initialization complete and card in service.	Green (Steady)	Green (Steady)
Card mis-match: Network Element has already configured the slot with some other card.	Amber	Amber
Card failed during boot up.	Red	Amber
Card failed while in-service.	Red	Green
Improper jack in of the card.	Green (Blinking)	Green (Blinking)
Hard Reset: All devices reset, FPGAs cleared and reprogrammed. Goes to initializing state next.	Amber	Amber
Soft Reset: Software is restarted, devices are reinitialized with provisioning. Goes to initializing state next.	Green	Green
Early Ejector LED status: One ejector is removed (contains one ejector switch in right).	OFF	Amber

Functional description

Schematic diagram of the MDU-16CL-C-50G card connectivity is given below. In the add directions, optical splitter is used for multiplexing and in the drop direction, WSS are used for demultiplexing functionalities. In the drop direction, per channel VOA can also be used.

16 Channel 50GHz Colour-less Multiplexer and Demultiplexer Unit connectivity

Typical specifications

Typical specifications and functionalities of the MDU-16CL-C-50G card are as follows:

Support C-band 50GHz DWDM 16 channels.
Supports per port reconfiguration of the wavelength to be added or dropped.
Supports colorless architecture with ROADM cards.

Table below summarizes the different parameters and its typical values:

MDU-16CL-C-50G - Typical Specifications

Specification	Units	Values
Channel Spacing	GHz	50
Insertion Loss for Add Ports	dB	14
Insertion Loss for Drop Ports	dB	7.5
No of Add/Drop Ports	-	16
VOA range	dB	0-15
VOA step size	dB	0.1
Switching time	ms	550
Connector type	-	LC/PC
Slot width in the chassis	-	Two full slots

NOTE: Above card with existing hardware also supports C-band Flex grid (as per G.694.1) with channels granularity of 12.5GHz. Feature can be enabled with additional software license.