8250A Optical Power Meter Operation Manual
5.3 Optical Power Calibration and Wavelength Sensitivity Correction
5-3
5.3
Optical Power Calibration and Wavelength Sensitivity Correction
Characteristics of sensor photodiodes include varying sensitivity for individual photodiodes and wavelength-
dependent sensitivity.
This instrument guarantees accuracy over a wide range of wavelengths by using both the power calibration
at the calibration wavelength and the wavelength sensitivity correction over a wide range of wavelengths.
At the calibration wavelength, the power can be traced to national standards and the high accuracy is guar-
anteed.
Figure 5-2 Wavelength Sensitivity Characteristics and Power Calibration of the Sensor
Wavelength
sensitivity
correction
S
en
sitiv
ity
[A/W
]
Calibration
wavelength
Wavelength
Power
calibration