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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 11 — May. 24, 2010
  • pp: 11707–11712

Low-loss compact high-Q 3D THz grating resonator based on a hybrid silicon metallic slit waveguide

Marko Gerhard, Christian Imhof, and Remigius Zengerle  »View Author Affiliations


Optics Express, Vol. 18, Issue 11, pp. 11707-11712 (2010)
http://dx.doi.org/10.1364/OE.18.011707


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Abstract

We present a high-Q 3D waveguide transmission filter for the THz-domain, based on an inhomogeneous Bragg grating, incorporated into the walls of a metallic slit waveguide. The reasons for the occurring loss mechanisms in the compact component are presented and the losses are minimized by selective mode adaption and by tapering the transitions to the corrugated regions. The performance of the device and the influence of parameter variations are analyzed by detailed numerical simulations. These 3D simulations clearly show the drastic drawback of 2D calculations in designing narrowband 3D metal-dielectric waveguide filters and could even lead to a better performance than known designs in 2D technology.

© 2010 OSA

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(130.5296) Integrated optics : Photonic crystal waveguides
(050.6624) Diffraction and gratings : Subwavelength structures
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Integrated Optics

History
Original Manuscript: April 1, 2010
Revised Manuscript: May 8, 2010
Manuscript Accepted: May 10, 2010
Published: May 18, 2010

Citation
Marko Gerhard, Christian Imhof, and Remigius Zengerle, "Low-loss compact high-Q 3D THz grating resonator based on a hybrid silicon metallic slit waveguide," Opt. Express 18, 11707-11712 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-11-11707


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