Frequently Asked Questions

Apodization varies the induced refractive-index profile and grating strength gradually along the grating's length, instead of switching it on and off sharply. This reduces the amplitude of side lobes in the reflection spectrum compared to an unapodized (uniform) grating.

Side-lobe suppression ratio (SLSR) of −10 dB to −30 dB is achievable, depending on grating strength and the specific apodization profile used.

Sensing applications, signal filtering, and Brillouin-scatter filtering all benefit from apodized gratings, since suppressed side lobes reduce unwanted crosstalk and false signal readings from adjacent spectral features.