Operation
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A05595_02_E00_00
HBM: public
MXFS
3.5.1.3 Wavelength
The wavelength value corresponds to the wavelength at the peak of the fiber
Bragg grating reflection spectrum, commonly referred as Bragg wavelength.
Fig. 3.14
Wavelength
1
Wavelength axis, in nm
2
FBG reflected spectrum
3
FBG peak
4
Wavelength value in nm
Reference Wavelength
The wavelength value to which every measurement is compared to is called
the reference wavelength. Per each defined channel, one reference wave
length has to be fixed between the minimum and maximum wavelength values
of the channel.
The reference wavelength is, for non calibrated sensors, the zero value of the
measurement. For calibrated sensors, the reference wavelength should be
defined as stated on their calibration sheets.
