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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 22 — Oct. 29, 2007
  • pp: 14467–14475

Compact silicon microring resonators with ultra-low propagation loss in the C band

Shijun Xiao, Maroof H. Khan, Hao Shen, and Minghao Qi  »View Author Affiliations


Optics Express, Vol. 15, Issue 22, pp. 14467-14475 (2007)
http://dx.doi.org/10.1364/OE.15.014467


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Abstract

– The propagation loss in compact silicon microring resonators is optimized with varied ring widths as well as bending radii. At the telecom band of 1.53–1.57 μm, we demonstrate as low as 3-4 dB/cm propagation losses in compact silicon microring resonators with a small bending radius of 5 μm, corresponding to a high intrinsic quality factor of 200,000-300,000. The loss is reduced to 2-3 dB/cm for a larger bending radius of 10 μm, and the intrinsic quality factor increases up to an ultrahigh value of 420,000. Slot-waveguide microring resonators with around 80% optical power confinement in the slot are also demonstrated with propagation losses as low as 1.3±0.2 dB/mm at 1.55 μm band. These loss numbers are believed to be among the lowest ones ever achieved in silicon microring resonators with similar sizes.

© 2007 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.5750) Optical devices : Resonators
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Integrated Optics

History
Original Manuscript: August 6, 2007
Revised Manuscript: October 1, 2007
Manuscript Accepted: October 10, 2007
Published: October 19, 2007

Citation
Shijun Xiao, Maroof H. Khan, Hao Shen, and Minghao Qi, "Compact silicon microring resonators with ultra-low propagation loss in the C band," Opt. Express 15, 14467-14475 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-22-14467


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