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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 20 — Oct. 15, 2010
  • pp: 3477–3479

Compact chip-scale filter based on curved waveguide Bragg gratings

Steve Zamek, Dawn T. H. Tan, Mercedeh Khajavikhan, Maurice Ayache, Maziar P. Nezhad, and Yeshaiahu Fainman  »View Author Affiliations


Optics Letters, Vol. 35, Issue 20, pp. 3477-3479 (2010)
http://dx.doi.org/10.1364/OL.35.003477


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Abstract

We propose a method for miniaturization of filters based on curved waveguide Bragg gratings, so that long structures can be packed into a small area on a chip. This eliminates the stitching errors introduced in the fabrication process, which compromise the performance of long Bragg gratings. Our approach relies on cascading curved waveguide Bragg gratings with the same radius of curvature. An analytical model for the analysis of these devices was developed, and a filter based on this model was designed and fabricated in a silicon on insulator platform. The filter had a total length of 920 μm , occupied an area of 190 μm × 114 μm , and exhibited a stop band of 1.7 nm at 1.55 μm and an extinction ratio larger than 23 dB .

© 2010 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

History
Original Manuscript: July 22, 2010
Manuscript Accepted: August 29, 2010
Published: October 13, 2010

Citation
Steve Zamek, Dawn T. H. Tan, Mercedeh Khajavikhan, Maurice Ayache, Maziar P. Nezhad, and Yeshaiahu Fainman, "Compact chip-scale filter based on curved waveguide Bragg gratings," Opt. Lett. 35, 3477-3479 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-20-3477

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