Mode dispersion and delay characteristics of optical waveguides using equivalent TL circuits.

Boucouvalas, A. C. and Qian, X., 2005. Mode dispersion and delay characteristics of optical waveguides using equivalent TL circuits. IEEE Journal of Quantum Electronics, 41 (7), pp. 951-957.

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DOI: 10.1109/JQE.2005.848918

Abstract

A new analysis leading to an exact and efficient algorithm is presented for calculating directly and without numerical differentiation the mode dispersion characteristics of cylindrical dielectric waveguides of arbitrary refractive-index profile. The new algorithm is based on the equivalent transmission-line (T-L) technique. From Maxwell's equations, we derive an equivalent T-L circuit for a cylindrical dielectric waveguide. Based on the TL-circuit model we derive exact analytic formulas for a recursive algorithm which allows direct calculation of mode delay and dispersion. We demonstrate this technique by calculating the fundamental mode dispersion for step, triangular, and linear chirp optical fiber refractive index profiles. The accuracy of the numerical results is also examined. The proposed algorithm computes dispersion directly from the propagation constant without the need for curve fitting and subsequent successive numerical differentiation. It is exact, rapidly convergent, and it results in savings for both storage memory and computing time.

Item Type:Article
ISSN:0018-9197
Subjects:Technology > Engineering > Electrical and Electronic Engineering
Group:Faculty of Science and Technology
ID Code:949
Deposited By:INVALID USER
Deposited On:12 Dec 2007
Last Modified:10 Sep 2014 15:39

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