Data transmission along quasisingle-mode three-layer optical waveguides

A theoretical investigation is made of data transfer along three-layer optical fiber waveguides in which higher modes experience strong attenuation because of radiative losses or because of enhanced dielectric losses in the outer cladding. It is shown that ther are waveguide parameters which permit compensation of the material dispersion by negative waveguide dispersion and make possible data transfer rates up to 100 Gbit/sec along a waveguide 1-km long. Expressions are derived for the calculation of the waveguide parameters operating in the quasisingle-mode regime. The results are given of a calculation of the dispersion, optimal duration of input pulses, data transfer rate, waveguide parameters, and aperture angles.