Effect of particle defects on an Echelle grating demultiplexer

  • Cao X
  • Wang D
  • Li K
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Abstract

The impact of particle defects in the free propagation region on the performance of an etched diffraction grating demultiplexer is analyzed in the present paper. Numerical simulations using a method of moment and a Green function method show that particle defects with some special sizes can result in a strong resonance with the incident wavelength and will produce a large scattering loss. © 2006.

Author-supplied keywords

  • Demultiplexer
  • Etched diffraction grating
  • Green function
  • Loss
  • Method of moment
  • Particle defects
  • WDM

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Authors

  • Xiaohua Cao

  • Dongyan Wang

  • Kang Li

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