A rapid accurate technique to calculate the group delay, dispersion and dispersion slope of arbitrary radial refractive index profile weakly-guiding optical fibers
| Autor: | de B.P. Hon, R. Mussina, David R. Selviah, AG Anton Tijhuis, FA Fernandez |
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| Přispěvatelé: | Electromagnetics, Electromagnetic and multi-physics modeling and computation Lab |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Radiation
Optical fiber Computer science business.industry Numerical analysis Mathematical analysis Refractive index profile Condensed Matter Physics law.invention Optics law Group delay dispersion Dispersion (optics) Numerical differentiation Electrical and Electronic Engineering business Galerkin method Refractive index |
| Zdroj: | Progress in Electromagnetic Research (PIER), 145, 93-113. Electromagnetics Academy Scopus-Elsevier |
| ISSN: | 1070-4698 |
| Popis: | This paper introduces a new numerical method to calculate the group delay, chromatic dispersion and dispersion slope of weakly-guiding optical fibers with arbitrary radial refractive index profiles. It is based on the analytic differentiation of the propagation coefficient up to the third order. The simulation results are compared to experimental data, with those calculated by other approaches and exact data where possible. Due to the analytical differentiation of the matrix equation, the method is more accurate compared to other approaches, it is also much faster than numerical differentiation as allows avoiding repeated solution of the eigenvalue problem to calculate the derivatives of the propagation coefficient. The precision of the method is limited only by the approximation errors of the mode solver. The Galerkin method with Laguerre-Gauss basis functions is used to determine the propagation coefficients of weakly-guiding structures. The new method enables fiber manufacturers to rapidly design dispersion characteristics of graded index, step index, single- and multiple-clad fibers, as well as few-mode and bend insensitive fibers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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