Determining
the effective
values of the core
refractive index neff and of the cladding refractive index of the possible propagation modes , among other optical fiber parameters such core confinement
factor variations with wave-length of the light propagating through the optic
fiber core.
Defining
the Phase
- Matching curves which represent the resonance condition and which relates the wavelength of the peak absorption
bands to the grating period.
The
evaluation of FWHM bandwidth and of the strength of the absorption peaks
observed in the LPGFS.
Evaluating
the inflexion
points existing on the curves obtained at step 2.