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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 26 — Dec. 25, 2006
  • pp: 12770–12781

Asymmetric Fano resonance and bistability for high extinction ratio, large modulation depth, and low power switching

Landobasa Y. Mario, S. Darmawan, and Mee K. Chin  »View Author Affiliations


Optics Express, Vol. 14, Issue 26, pp. 12770-12781 (2006)
http://dx.doi.org/10.1364/OE.14.012770


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Abstract

We propose a two-ring resonator configuration that can provide optical switching with high extinction ratio (ER), large modulation depth (MD) and low switching threshold, and compare it with two other conventional one-ring configurations. The achievable input threshold is n2IIN ~10-5, while maintaining a large ER (> 10dB) and MD (~ 1) over a 10-GHz (0.1 nm) optical bandwidth. This performance can also be achieved by the ring-enhanced Mach-Zehnder interferometer, and is one to two orders of magnitude better than the simple bus-coupled one-ring structures, because of the use of asymmetric Fano resonance as opposed to the usual symmetric resonance of a single ring. The sharpness and the asymmetricity of the Fano resonance are linked to the low switching threshold and the high extinction ratio, respectively, and also accounts for the different dependence on ring dimensions between the one- and two-ring structures.

© 2006 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(190.1450) Nonlinear optics : Bistability
(230.5750) Optical devices : Resonators

ToC Category:
Integrated Optics

History
Original Manuscript: October 18, 2006
Revised Manuscript: December 1, 2006
Manuscript Accepted: December 6, 2006
Published: December 22, 2006

Citation
Landobasa Y. Mario, S. Darmawan, and Mee K. Chin, "Asymmetric Fano resonance and bistability for high extinction ratio, large modulation depth, and low power switching," Opt. Express 14, 12770-12781 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-26-12770


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