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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 14 — Jul. 2, 2012
  • pp: 15983–15990

Waveguide-coupled drop filters on SOI using quarter-wave shifted sidewalled grating resonators

Venkat Veerasubramanian, Guillaume Beaudin, Alexandre Giguère, Boris Le Drogoff, Vincent Aimez, and Andrew G. Kirk  »View Author Affiliations


Optics Express, Vol. 20, Issue 14, pp. 15983-15990 (2012)
http://dx.doi.org/10.1364/OE.20.015983


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Abstract

We report on the design, fabrication, and demonstration of waveguide coupled channel drop filters at 1550 nm, on a silicon-on-insulator (SOI) substrate. These devices rely on resonant power transfer from a bus waveguide to side-walled Bragg resonators with quarter-wave shifts in the middle. By employing a second mirror resonator, and a tap-off waveguide, reflections along the bus waveguide can be reduced, leading to realization of circulator-free resonance filters. These devices were fabricated on SOI using e-beam lithography and inductively coupled plasma (ICP) etching. Fabricated devices with two coupled cavities are demonstrated to have rejection ratios greater than 20 dB and 3-dB bandwidths of 110 GHz, close to the values predicted by numerical modeling. We also demonstrate power tap-off at resonance of around 16 dB.

© 2012 OSA

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Optical Devices

History
Original Manuscript: April 3, 2012
Revised Manuscript: June 21, 2012
Manuscript Accepted: June 22, 2012
Published: June 28, 2012

Citation
Venkat Veerasubramanian, Guillaume Beaudin, Alexandre Giguère, Boris Le Drogoff, Vincent Aimez, and Andrew G. Kirk, "Waveguide-coupled drop filters on SOI using quarter-wave shifted sidewalled grating resonators," Opt. Express 20, 15983-15990 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-14-15983


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