Graphical representation of mode selectivity in hollow waveguides with and without inner dielectric layer: slab waveguide model
Abstract
The degree of mode selectivity in hollow waveguides is defined by using the ratios between the attenuation constants of the dominant and higher order modes. The mode selectivity has been evaluated numerically as a function of the complex refractive index of the cladding material. The degree of mode selectivity is generally shown to be less than 2. However, it can be made larger than 2 without sacrificing the low-loss property of the waveguide by means of a dielectric coating.
- Publication:
-
Optics Communications
- Pub Date:
- June 1994
- DOI:
- 10.1016/0030-4018(94)90657-2
- Bibcode:
- 1994OptCo.108..243N