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Optics Letters

Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 24 — Dec. 15, 2010
  • pp: 4115–4117

Arbitrary truncation order three-point finite difference method for optical waveguides with stepwise refractive index discontinuities

Slawomir Sujecki  »View Author Affiliations


Optics Letters, Vol. 35, Issue 24, pp. 4115-4117 (2010)
http://dx.doi.org/10.1364/OL.35.004115


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Abstract

An exact finite difference (FD) representation of the second-order derivative on three nodes is presented and used to obtain an FD algorithm that allows achieving an arbitrary truncation order. The FD weights are calculated analytically using the series that expresses the field value at a given FD node in terms of the field value and its derivatives at a neighboring node, when a stepwise discontinuity in the refractive index distribution is present between the nodes. The results obtained confirm that the proposed algorithm is accurate, efficient, and achieves the predicted improved performance.

© 2010 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.2790) Integrated optics : Guided waves

ToC Category:
Integrated Optics

History
Original Manuscript: October 1, 2010
Revised Manuscript: October 28, 2010
Manuscript Accepted: November 4, 2010
Published: December 9, 2010

Citation
Slawomir Sujecki, "Arbitrary truncation order three-point finite difference method for optical waveguides with stepwise refractive index discontinuities," Opt. Lett. 35, 4115-4117 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-24-4115

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