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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 10 — May. 15, 2006
  • pp: 4459–4468

Apodized photonic crystal waveguide gratings

Nobuhiro Yokoi, Takeshi Fujisawa, Kunimasa Saitoh, and Masanori Koshiba  »View Author Affiliations

Optics Express, Vol. 14, Issue 10, pp. 4459-4468 (2006)

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Apodized photonic crystal (PC) waveguide gratings are proposed to suppress sidelobes which appear in reflection spectra of usual PC waveguide gratings. By using specific functions (Gauss and Gauss-cosine functions) for the longitudinal refractive index distribution, it is possible to suppress sidelobes in the reflection spectra of PC waveguide gratings efficiently. The apodization is realized by simply changing diameters of dielectric pillars adjacent to the PC waveguide core. It is shown that by using Gauss-cosine functions for the apodization, Bragg frequency of the waveguide grating becomes insensitive to the magnitude of perturbation leading to the possibility of designing waveguide gratings with arbitrarily Bragg frequency and bandwidth by modulating geometrical parameters only.

© 2006 Optical Society of America

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.1480) Optical devices : Bragg reflectors

ToC Category:
Optical Devices

Original Manuscript: March 21, 2006
Revised Manuscript: May 2, 2006
Manuscript Accepted: May 5, 2006
Published: May 15, 2006

Nobuhiro Yokoi, Takeshi Fujisawa, Kunimasa Saitoh, and Masanori Koshiba, "Apodized photonic crystal waveguide gratings," Opt. Express 14, 4459-4468 (2006)

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