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Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 4 Optical Amplifier Cards
4.7.1 OPT-AMP-L Faceplate Ports
The OPT-AMP-L is an L-band, DWDM optical amplifier card consisting of a two-stage EDFA with
midstage access loss (MSL) for an external DCU and OSC add-and-drop capability. Using CTC, the card
is provisionable as a preamplifier (OPT-PRE) or booster amplifier (OPT-BST), and is well suited for use
in networks that employ DS or SMF-28 fiber. The amplifier can operate up to 64 optical transmission
channels at 50-GHz channel spacing in the 1570 nm to 1605 nm wavelength range.
When an OPT-AMP-L installed, an OSCM card is needed to process the OSC. You can install the
two-slot OPT-AMP-L in Slots 1 to 6 and 12 to 17.
The card has the following features:
• Maximum power output of 20 dBm
• True variable gain amplifier with settable range from 12 to 24 dBm in the standard gain range and
24 dBm to 35 dbM with uncontrolled gain tilt
• Built-in VOA to control gain tilt
• Up to 12 dBm MSL for an external DCU
• Fast transient suppression; able to adjust power levels in hundreds of microseconds to avoid bit
errors in failure or capacity growth situations
• Nondistorting low frequency transfer function
• Midstage access loss for dispersion compensation unit
• Constant pump current mode (test mode)
• Constant output power mode (used during optical node setup)
• Constant gain mode
• Internal ASE compensation in constant gain mode and in constant output power mode
• Full monitoring and alarm handling capability
• Optical safety support through signal loss detection and alarm at any input port, fast power down
control (less than one second), and reduced maximum output power in safe power mode. For details
on ALS provisioning for the card, refer to the Cisco ONS 15454 DWDM Procedure Guide. For
information on using the card to implement ALS in a network, see the “10.7 Network Optical
Safety” section on page 10-18.
Note Before disconnecting any OPT AMP-L fiber for troubleshooting, first make sure the OPT AMP-L card
is unplugged.
4.7.1 OPT-AMP-L Faceplate Ports
The OPT-AMP-L amplifier card has ten optical ports located on the faceplate:
• MON RX is the output monitor port (receive section).
• MON TX is the output monitor port.
• COM RX is the input signal port.
• LINE TX is the output signal port.
• LINE RX is the input signal port (receive section).
• COM TX is the output signal port (receive section).
• OSC RX is the OSC add input port.
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