Investigations on single-mode fibers with rectangular core geometry

OSA Continuum, vol. 3, pp. 2243

Abstract

In this paper, we present a theoretical and experimental analysis on the properties of rectangular core fibers. We investigate the single-mode regime and the bending properties with respect to the aspect ratio of the rectangular core. In comparison to a standard step-index single-mode fiber, we show that a passive single-mode rectangular core fiber with an aspect ratio of ten is able to transport two times more power without the occurrence of nonlinear effects. For actively doped fibers, the threshold of nonlinear effects can be raised by up to 15%. For experimental verification a rectangular core fiber with an aspect ratio of three is manufactured and analysed. Here, the results between the numerical simulation and the experimental analysis are in agreement.

Authors 3

1. Patrick Baer Aachen Fraunhofer ILT—Institute for Laser Technology

   Fraunhofer Institute for Laser Technology

   Affiliation as printed

   Fraunhofer ILT - Institute for Laser Technology, Steinbachstr. 15, 52074 Aachen, Germany

2. Martin Giesberts Aachen Fraunhofer ILT—Institute for Laser Technology

   Fraunhofer Institute for Laser Technology

   Affiliation as printed

   Fraunhofer ILT - Institute for Laser Technology, Steinbachstr. 15, 52074 Aachen, Germany

3. Oliver Fitzau Aachen Fraunhofer ILT—Institute for Laser Technology

   Fraunhofer Institute for Laser Technology

   Affiliation as printed

   Fraunhofer ILT - Institute for Laser Technology, Steinbachstr. 15, 52074 Aachen, Germany