  Within the Heisenberg's uncertainty principle it is explicitly discussed the
impact of these inequalities on the theory of integrated photonics at
sub-wavelength regime. More especially, the uncertainty of the effective index
values in nanophotonics at sub-wavelength regime, which is defined as the
eigenvalue of the overall opto-geometric problems in integrated photonics,
appears directly stemming from Heisenberg's uncertainty. An apt formula is
obtained allowing us to assume that the incertitude and the notion of
eigenvalue called effective optical index or propagation constant is inversely
proportional to the spatial dimensions of a given nanostructure yielding a
transfer of the fuzziness on relevant senses of eigenvalues below a specific
limit's volume.
