Roadm Features - Fujitsu 1FINITY L100 User Manual

37
System Description and Engineering

ROADM Features

1.3
ROADM Features
Automatic In-Service State
When equipment or facilities or both are preprovisioned, before equipment installation, the equipment or
facilities or both are placed in Automatic In-Service (AINS) state. When the equipment is installed, the
equipment or facilities or both are placed In-Service (IS).
Note: If the installed equipment does not match the preprovisioned equipment type, an MEA condition is
raised.
Automatic Line Control
The Automatic Line Control (ALC) feature automatically adjusts the total optical output power and keeps the
power of each channel constant and at the appropriate level. This feature ensures that manual adjustments are
not required when channels are added to or dropped from the WDM facility. ALC ensures that other channels do
not suffer performance losses (traffic hits) when a channel is added to or deleted from the system.
Automatic Gain Control
The Automatic Gain Control (AGC) feature automatically adjusts the gain of each channel to a constant and
appropriate level. The optical amplifier in the L100 Blade continuously monitors the composite input and output
signal power. A control circuit maintains a constant target gain using preamplifier and postamplifier variable
optical attenuators.
Automatic Laser Shutdown
The Automatic Laser Shutdown (ALS) feature automatically shuts down the laser when the postamplifier detects
a signal loss and an Optical Supervisory Channel (OSC) loss.
Automatic Power Reduction
The Automatic Power Reduction (APR) feature automatically reduces the laser power when the postamplifier
detects high reflection on its output port. APR is triggered when the reported Output Return Loss (ORL) is less
than 17.6 dB. Normal operation restarts when ORL exceeds 20.6 dB. APR mode limits output power to 3 dBm
regardless of current provisioned settings and input power. It does not prevent operating at lower output
powers.
Simple Network Management Protocol Trap
A Simple Network Management Protocol (SNMP) trap is an event notification that is sent from an SNMP agent to
one or more SNMP managers when an extraordinary event, for example, an alarm, occurs. The SNMP agent
generates SNMP traps for all standing conditions unless the standing condition disables the agent.
· Fujitsu and Fujitsu Customer Use Only
Release 19.1.1 Issue 1.1, May 2021