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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 21 — Jul. 20, 2004
  • pp: 4225–4231

Perfectly matched layer in numerical wave propagation: factors that affect its performance

Arti Agrawal and Anurag Sharma  »View Author Affiliations


Applied Optics, Vol. 43, Issue 21, pp. 4225-4231 (2004)
http://dx.doi.org/10.1364/AO.43.004225


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Abstract

The perfectly matched layer (PML) boundary condition is generally employed to prevent spurious reflections from numerical boundaries in wave propagation methods. However, PML requires additional computational resources. We have examined the performance of the PML by changing the distribution of sampling points and the PML’s absorption profile with a view to optimizing the PML’s efficiency. We used the collocation method in our study. We found that equally spaced field sampling points give better absorption of beams under both optimal and nonoptimal conditions for low PML widths. At high PML widths, unequally spaced basis points may be equally efficient. The efficiency of various PML absorption profiles, including new ones, has been studied, and we conclude that for better numerical efficiency it is important to choose an appropriate profile.

© 2004 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(350.5500) Other areas of optics : Propagation

History
Original Manuscript: October 3, 2003
Revised Manuscript: March 19, 2004
Published: July 20, 2004

Citation
Arti Agrawal and Anurag Sharma, "Perfectly matched layer in numerical wave propagation: factors that affect its performance," Appl. Opt. 43, 4225-4231 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-21-4225


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