
Formulas Used with Your Optical Spectrum Analyzer
620 FTB-5240S/S-P/BP
Central Wavelength Calculation (Spectral Transmittance)
Central Wavelength Calculation (Spectral
Transmittance)
The central wavelength is calculated using the following equation:
Where
a is the central wavelength,
R
is the wavelength on the right at which the power is 3 dB below the
power at the nominal wavelength, and
L
is the wavelength on the left at which the power is 3 dB below the
power at the nominal wavelength.
a
R
L
+
2
-------------------
=
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