Model ID: 14707
The low transmission loss and inherently large bandwidth are the two main advantages of optical waveguides compared to microwave waveguides. Thus, for communication over long distances or for high bitrates, optical fibers are preferred over electrical cables.
This model is an example of a single step-index waveguide made of silica glass. The inner core is made of pure silica glass with refractive index n1 = 1.4457 and the cladding is doped resulting in a refractive index of n2 = 1.4378. These values are valid for a free-space wavelength of 1.55 micrometers. The radius of the cladding was chosen to be large enough so that the field of confined modes is zero at the exterior boundaries.