Cisco repeater

Optical amplifiers are used in amplified nodes such as hub nodes, amplified OADM nodes, terminal nodes, and line amplifier nodes. The optical amplifier card architecture includes an optical plug-in module with a controller that manages optical power, laser current, and temperature control loops. The amplifier also manages communication with the TCC2, and operations, administration, maintenance, and provisioning (OAM&P) functions such as provisioning, controls, and alarms. PRODUCT FEATURES: Fixed gain mode (with programmable tilt); True variable gain; Fast transient suppression; Nondistorting low-frequency transfer function; Settable maximum output power; Fixed output power mode (mode used during provisioning); Constant drive current mode (test mode); MAL for fiber based DCU; ASE compensation in fixed gain mode; Full monitoring and alarm handling with settable thresholds; Optical safety features, including signal loss detection and alarming, fast power down control, and reduced maximum output power in safe power mode; OSRI is a feature capable of shutting down the optical output power or reducing the power to a safe level (automatic power reduction); ALS is a safety mechanism used in the event of a fiber cut.