1-2
IM AQ1100-01EN
1.2 Optical Power Meter and Light Source
Optical Power Meter
The three instrument types listed below are available for measuring different types of optical power.
Suffix Code
Optical Power Type
-SPM
Standard
-HPM
High input
-PPM
PON (passive optical network)
If you are using this instrument to measure optical power, the various settings listed below can be
configured.
Item
Models with -SPM or
-HPM Suffix Codes
Models with -PPM Suffix Codes
Normal power meter
selected
PON power meter
selected
Wavelength
Yes
Fixed
10, 11
Fixed
10, 11
Wavelength mode
1
Yes
—
—
Modulation mode
2
Yes
—
—
Unit
Yes (dB, dBm, W)
Yes (dB, dBm, W)
Yes (dBm, W)
Reference
3
Yes
Yes
—
Measured value display hold
Yes
Yes
Yes
Measured value logging
Yes
Yes
—
Zero set
4
Yes
Yes
Yes
Average count
5
Yes
Yes
Yes
Maximum and minimum value
display
6
Yes
Yes
—
Interlocking of light source and
optical power meter settings
7
Yes
Yes
—
Offset
8
Yes
Yes
Yes
Threshold
9
Yes
Yes
Yes
Measurement of the optical
power from ONU to OLT for a
particular signal wavelength
10
—
—
Yes
Measurement of the optical
power from OLT to ONU for a
particular signal wavelength
11
—
—
Yes
Yes: Can be set or executed, —: Not available
1
Wavelengths can be set with the wavelength mode set to Simple, Detail, or CWDM.
•
Simple: You can select from a list of preset wavelengths.
•
Detail: You can set the wavelength to a value from 800 to 1700 nm in 1 nm steps.
•
CWDM: You can set the wavelength to a value from 1270 to 1610 nm in 20 nm steps along the CWDM
wavelength grid.
2
You can select the modulation frequency of the incident rays from a list of presets. You can also select CW
(continuous).
3
You can make the displayed measured value the reference and display subsequent measured values as
relative values.
4
You can adjust the internal deviation of the optical power measurement section and obtain more accurate
absolute optical power values.
5
You can display averaged measured values.
6
You can display the maximum and minimum measured values.
7
You can interlock the light source and optical power meter settings when you connect an optical fiber
between the light source port of an AQ1100A, AQ1100B, or AQ1100D and the optical power measurement
port of another AQ1100A, AQ1100B, or AQ1100D.
8
You can add a specified value (the offset value) to measured optical power values.
9
You can set upper and lower threshold values and determine whether or not the measured values fall within
them.
10
You can measure the optical power of an upstream signal from the ONU (optical network unit: the user’s
optical terminal) to the OLT (optical line termination: the telephone exchange’s optical terminal). The optical
power of the 1310 nm (data wavelength) signal is measured.
11
You can measure the optical power of downstream signals from the OLT to the ONU. The optical power of
the 1490 nm (data wavelength) and 1550 nm (video wavelength) signals is measured.
