optical
CON powerMONITOR
14
9 Appendix - Application
a) System monitoring with known output power
The powerMONITOR measures the deviation of the signal power at the end of the system as reference to the typical
fiber output power from the light source (e.g. DVI converter, SFP transceiver, etc.) according the device specifications.
At the example on top the powerMONITOR exhibits -6 dBm which means 1 dB attenuation in reference to the output power of -5
dBm.
-
The following matrix exhibits the attenuation accuracy tolerances of absolute and relative values from the powerMONITOR.
Fiber Type
Absolute Value [dBm]
Relative Value [
∆dB]
Single-mode
0.5
0.1
Multimode VCSEL
1.0
0.5
Multimode LED
1.0
0.5
Fiber output power
I -5 dBm I
Current power (absolute value):
I -6 dBm I
System Attenuation (relative value
∆dB ): 1 dB
equipment
fiber output
power: - 5dBm
powerMONITOR
e.g. NO4SBB1-4PM
