ADSORPTION ON STRAIGHT AND BENT OPTICAL FIBERS CONSIDERED AS A PERTURBATION PROBLEM

摘要

The effect of a thin adsorbed layer of a foreign material on the modal propagation constant in an optical fiber is calculated by the use of a time-independent perturbation theory. The effect is measured on a straight fiber but is enhanced on a bent fiber because of tunneling, which is analogous to the Zener effect in quantum mechanics. Experimental results obtained with a fiber interferometer are presented. [References: 8]