OPM-C-4 and OPM-C-2

Optical power monitoring per channel is required in the DWDM system in order to control the transmission performance. By measuring power using OPM and selectively pre-emphasizing each transmitter output power using variable optical attenuation OSNR at the end of the link can be optimized. OPM-C-4 is a 4 port and OPM-C-2 is a two port card which measure optical power from either 4 or 2 monitoring input ports such as OFA in the C band at 50GHz, respectively. Each card is half slot and a total of two such cards can be used in one slot with an optical adaptor card.

Front Panel

The following figure shows the front panel of OPM-C-4 and OPM-C-2 cards with adaptor card:

Power Specifications

Power Specifications - OPM Cards

Functional Description

The schematic diagram of the OPM-C-4 and OPM-C-2 cards is as follows:

The input ports can be connected to any optical monitoring ports such as the monitoring ports of the OFA cards for optical power read out up to 80 Channels at 50GHz intervals.

Typical Specifications

Typical specifications and functionalities of the OPM-C-4 and OPM-C-2 cards are as follows:

• Support C-band 50GHz DWDM 80 channel power monitoring.
• Supports either 2 port or 4 port inputs to be monitored.
• With additional software license, OPM cards can support OSNR monitoring of 10G, 100G and 200G traffic channels.

The following table summarizes the different parameters and its typical values:

Typical Specifications - OPM-C-4 and OPM-C-2 Cards