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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 16 — Aug. 2, 2010
  • pp: 17106–17113

Ring-type Fabry-Pérot filter based on the self-collimation effect in a 2D photonic crystal

Teun-Teun Kim, Sun-Goo Lee, Seong-Han Kim, Jae-Eun Kim, Hae Yong Park, and Chul-Sik Kee  »View Author Affiliations

Optics Express, Vol. 18, Issue 16, pp. 17106-17113 (2010)

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We propose a ring-type Fabry-Pérot filter (RFPF) based on the self-collimation effect in photonic crystals. The transmission characteristics of self-collimated beams are experimentally measured in this structure and compared with the results obtained with the simulations. Bending and splitting mechanisms of light beams by the line defects introduced into the RFPF are used to control the self-collimated beam. Antireflection structures are also employed at the input and output photonic crystal interfaces in order to minimize the coupling loss. Reflectance of the line-defect beam splitters can be controlled by adjusting the radius of defect rods. As the reflectance of the line-defect beam splitters increases, the transmission peaks become sharper and the filter provides a Q-factor as high as 1037. Proposed RFPF can be used as a sharply tuned optical filter or as a spectrum analyzer based on the self-collimation phenomena of photonic crystals. Furthermore, it is suitable for a building block of photonic integrated circuits, as it does not back reflect any of the incoming self-collimated beams owing to the antireflection structure applied.

© 2010 OSA

OCIS Codes
(120.1680) Instrumentation, measurement, and metrology : Collimation
(230.0230) Optical devices : Optical devices
(250.5300) Optoelectronics : Photonic integrated circuits
(310.1210) Thin films : Antireflection coatings
(070.2615) Fourier optics and signal processing : Frequency filtering
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: May 24, 2010
Revised Manuscript: June 23, 2010
Manuscript Accepted: July 21, 2010
Published: July 28, 2010

Teun-Teun Kim, Sun-Goo Lee, Seong-Han Kim, Jae-Eun Kim, Hae Yong Park, and Chul-Sik Kee, "Ring-type Fabry-Pérot filter based on the self-collimation effect in a 2D photonic crystal," Opt. Express 18, 17106-17113 (2010)

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