Journal of Jilin University Science Edition

Previous Articles     Next Articles

Numerical Calculation of the Inverse DiffractionProblem for Grating by Optimization Method

YIN Weishi1, GUO Yukun2, CHEN Guofang3, LI Zhe1   

  1. 1. College of Science, Changchun University of Science and Technology, Changchun 130022, China;2. School of Science, Harbin Institue of Technology, Harbin 150001, China;3. College of Minority Education, Jilin Provincial Institute of Education, Changchun 130022, China
  • Received:2013-08-09 Online:2014-03-26 Published:2014-03-20
  • Contact: LI Zhe E-mail:zheli200809@163.com

Abstract:

A grating reconstruction problem from near field data was considered. On the basis of the denseness of plane waves, we approximately denoted the scattered field with a sum of finite plane waves, and computed it from the known observation data. Then the grating profile was reconstructed by an optimization method. The numerical experiments confirm the effectiveness of our method.

Key words: grating, reconstruction, Helmholtz equation, optimization method

CLC Number: 

  • O241.82