This article is cited in 3 papers

OPTO-IT

Calculation of the power of the field, peneting into the external environment of the weaknessing guide of a single-mode fiber

V. A. Gladkikh

Computing Center of the Far Eastern Branch of the Russian Academy of Sciences, Khabarovsk, Russia

Abstract: A regular circular weakly guiding double clad optical fiber is considered. For a single-mode regime of the waveguide, an expression for estimating the proportion of the mode field power penetrating into the outer continuous cladding is obtained using a standard approach and a Gaussian model. It is shown that a simpler and more transparent result is obtained in the Gaussian model, which can be used in practical applications, in particular, when designing this type of waveguides with a minimal proportion of power penetrating into the outer shell.

Keywords: Maxwell equations, fiber waveguide, two-stage profile, cylindrical functions, Gaussian model.

Received: 29.11.2018
Accepted: 22.06.2019

DOI: 10.18287/2412-6179-2019-43-4-557-561