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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 4 — Apr. 23, 2008

Resonance-splitting and enhanced notch depth in SOI ring resonators with mutual mode coupling

Ziyang Zhang, Matteo Dainese, Lech Wosinski, and Min Qiu  »View Author Affiliations


Optics Express, Vol. 16, Issue 7, pp. 4621-4630 (2008)
http://dx.doi.org/10.1364/OE.16.004621


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Abstract

Resonance-splitting and enhanced notch depth are experimentally demonstrated in micro-ring resonators on SOI platform as a result of the mutual mode coupling. This coupling can be generated either by the nanometer-scaled gratings along the ring sidewalls or by evanescent directional coupling between two concentric rings. The transmission spectra are fitted using the time-domain coupled mode analysis. Split-wavelength separation of 0.68 nm for the 5-µm-radius ring, notch depth of 40 dB for the 10-µm-radius ring, and intrinsic Q factor of 2.6×105 for the 20-µm-radius ring are demonstrated. Notch depth improvement larger than 25dB has been reached in the 40-39-µm-radius double-ring structure. The enhanced notch depth and increased modal area for the concentric rings might be promising advantages for bio-sensing applications.

© 2008 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(230.5750) Optical devices : Resonators
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Optical Devices

History
Original Manuscript: February 12, 2008
Revised Manuscript: March 11, 2008
Manuscript Accepted: March 14, 2008
Published: March 19, 2008

Virtual Issues
Vol. 3, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Ziyang Zhang, Matteo Dainese, Lech Wosinski, and Min Qiu, "Resonance-splitting and enhanced notch depth in SOI ring resonators with mutual mode coupling," Opt. Express 16, 4621-4630 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-16-7-4621


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