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Optics Letters


  • Vol. 36, Iss. 6 — Mar. 15, 2011
  • pp: 1011–1013

Compact middle-wave infrared Fabry–Perot interferometer with double metallic subwavelength gratings

Guoguo Kang, Ismo Vartiainen, Benfeng Bai, Pertti Pääkkönen, and Jari Turunen  »View Author Affiliations

Optics Letters, Vol. 36, Issue 6, pp. 1011-1013 (2011)

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We demonstrate a compact middle-wave IR (MWIR) Fabry–Perot (FP) interferometer by replacing the traditional distributed Bragg reflectors consisting of thick multilayer films with two identical metallic subwavelength gratings. The transmission efficiency, resonance peak position, and finesse of the FP interferometer can be controlled by tuning the structural parameters. The performance of the MWIR FP interferometer is verified by experiment, which shows its potential application as, for example, narrowband MWIR filter for gas detection.

© 2011 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.2230) Diffraction and gratings : Fabry-Perot
(050.2555) Diffraction and gratings : Form birefringence
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Diffraction and Gratings

Original Manuscript: January 18, 2011
Revised Manuscript: February 11, 2011
Manuscript Accepted: February 18, 2011
Published: March 15, 2011

Guoguo Kang, Ismo Vartiainen, Benfeng Bai, Pertti Pääkkönen, and Jari Turunen, "Compact middle-wave infrared Fabry–Perot interferometer with double metallic subwavelength gratings," Opt. Lett. 36, 1011-1013 (2011)

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