In this paper the authors present an hybrid approach for the analysis of the optical filtering
function in corrugated waveguide filters with a high index modulation. This approach is …

A method to compute the propagating modes of graded index waveguides with an arbitrary
refractive index distribution is proposed, based on the variational method applied to the …

The leapfrogging technique solving the Gel'fand–Levitan–Marchenko integral equation is a
viable numerical tool for producing the refractive index profile associated with the design of …

Graded-index optical channel waveguides like Ti-indiffused LiNbO3 waveguides have been
modelled by effective refractive index profile along the lateral direction, discretising the …

A new method for the reconstruction of refractive index profiles of optical waveguides from
the intensity profile of the fundamental mode, as measured with near field (NF) technique, is …

We describe a numerical method devised to calculate the lower-order modes of optical
waveguides with two-dimensional transverse index profiles. This method is based on finite …

It is well known that, under the WKB approximation, the refractive-index profile of a graded-
index planar waveguide can be calculated from the corresponding effective-index function …

In graded index fiber, some degree of ellipticity is found. So it is important to study the effect
which is little bit different from circularity. With the help of a new method illustrated in this …

For mode fields of integrated optical waveguides with piecewise constant and rectangular
permittivity profile, Maxwell's equations reduce to the two-dimensional Helmholtz wave …

Fabry–Perot bandpass filters made of mirrors with both high-and low-Δn (refractive-index
modulation) have simultaneously a broad rejection band and a narrow passband. The …