Modal analysis and dispersion curves of a curvilinear triangular cored light guide using Goell's point matching method

Towards dispersion characteristics for a new unconventional metal‐clad optical waveguide

“…But such saturation tendency is not seen in the case of a MMM waveguide. Also the guided modes in the case of MMM waveguide are considerably decreased compared to DDM waveguide and the dielectric waveguide is considered in our recent article [27]. Thus, we can say that the MMM waveguide may be used as a mode filter.…”

“…Normalized propagation constant b has been plotted against normalized parameter V. Finally, we consider Figure 4, when all the boundaries are metallic, the fields on all sides must vanish. Here derivative part has no significance so, we will consider only 60 simultaneous equations formed by the coefficients of the constants A m , B m , C m , and D m is a 60 ϫ 60 determinant ⌬ 3 and the characteristic equation can be written as [27];…”

“…In the present article Goell's point matching method under weak guidance condition is used to obtain modal characteristic equations for the proposed waveguide in three cases for the lowest order modes. By choosing a large number of matching points on the core-cladding boundaries of the proposed waveguides, dispersion curves are obtained and are compared with the dispersion curves of a dielectric waveguide [27].…”

Analysis Of Waveguide Whose Guiding Region Filled With Dielectric Material Bounded By Two Equiangular Spirals Separating It From Two Dielectric Cladding Regions

“…Among the non-circular cross-sections there are the triangular, elliptical, planar, polygonal and other more complicated shapes investigated [1][2][3][4][5][6][7][8][9]. Dielectric plane slab waveguides form the basic building blocks of a variety of devices in the field of integrated optics, laser beam technology, and microwave communications.…”

Modal dispersion curves of an optical waveguide with a core cross-section partially bounded by one turn of an equiangular spiral under weak guidance approximation

“…If we consider a local region of this cross-section, we find it resembles with circular cross-section deformed into a spiral shape. This type of deformation is best studied by numerical or perturbation method [10][11][12][13]. Among the many numerical and approximate methods the point matching method proposed by Goell [10] is probably the most suitable and convenient for the study of model characteristics of unconventional waveguides under weak guidance condition.…”