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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 1 — Jan. 3, 2011
  • pp: 306–316

Reconfigurable multi-channel second-order silicon microring-resonator filterbanks for on-chip WDM systems

Marcus S. Dahlem, Charles W. Holzwarth, Anatol Khilo, Franz X. Kärtner, Henry I. Smith, and Erich P. Ippen  »View Author Affiliations


Optics Express, Vol. 19, Issue 1, pp. 306-316 (2011)
http://dx.doi.org/10.1364/OE.19.000306


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Abstract

We report the fabrication of a reconfigurable wide-band twenty-channel second-order dual filterbank, defined on a silicon-on-insulator (SOI) platform, with tunable channel spacing and 20 GHz single-channel bandwidth. We demonstrate the precise tuning of eleven (out of the twenty) channels, with a channel spacing of 124 GHz (~1 nm) and crosstalk between channels of about −45 dB. The effective thermo-optic tuning efficiency is about 27 μW/GHz/ring. A single channel of a twenty-channel counter-propagating filterbank is also demonstrated, showing that both propagating modes exhibit identical filter responses. Considerations about thermal crosstalk are also presented. These filterbanks are suitable for on-chip wavelength-division-multiplexing applications, and have the largest-to-date reported number of channels built on an SOI platform.

© 2010 OSA

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(230.5750) Optical devices : Resonators
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

History
Original Manuscript: November 12, 2010
Revised Manuscript: December 10, 2010
Manuscript Accepted: December 14, 2010
Published: December 22, 2010

Citation
Marcus S. Dahlem, Charles W. Holzwarth, Anatol Khilo, Franz X. Kärtner, Henry I. Smith, and Erich P. Ippen, "Reconfigurable multi-channel second-order silicon microring-resonator filterbanks for on-chip WDM systems," Opt. Express 19, 306-316 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-1-306


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