Step Index Fiber

Model ID: 145


The transmission speed of optical waveguides is superior to microwave waveguides, because optical devices have a much higher operating frequency than microwaves, enabling a far higher bandwidth.

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, with a refractive index of n2 = 1.4378. These values are valid for free-space wavelengths of 1.55 micrometers. The radius of the cladding is chosen to be large enough so that the field of confined modes is zero at the exterior boundaries.