ons15501 Output Signal Power

1.3.6.1.4.1.1869.11.11.2.5

The optical signal power at the output of the Amplifier. The value of this attribute triggers the alarm, based on mean value and trigger as defined by ons15501OutputSignalPowerMean and ons15501OutputSignalPowerTrigger. This value is internally calculated using the following formula. ons15501OutputSignalPower = ons15501OpticalPowerGain + ons15501InputOpticalPower At very low ons15501InputOpticalPower (below -16 dBm), the ons15501OutputSignalPower has significant difference from ons15501OutputOpticalPower while at higher input power (ons15501InputOpticalPower) they are closer. Following graph captures the difference (for a 17 dBm EDFA) (dashes '-'/'_' denote optical output power while dots '.' denote signal output power) ^ | .- | .- | .- +5 dBm | .- | .- Optical | _.- power / | _ -. Signal |_ _ - . power | . | . | . -17 dBm +-----------------------+--------------> -29 dBm -10 dBm Input Optical Power ::= { ons15501Attr 5 } SYNTAX Ons15501TenthdB (-60..0) UNITS "dBm Mean value for output optical power. If the output signal power falls below (or goes above) the mean value by more than trigger (see ons15501OutputSignalPowerTrigger) an alarm is generated. The alarm is cleared when the output optical power is back within 90% of trigger from the mean.