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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 4 — Feb. 25, 2013
  • pp: 4979–4985

Optical coupling and emission of metal-insulator confined circular resonators

Kai-Jun Che, Mei-Xin Lei, and Zhi-Ping Cai  »View Author Affiliations


Optics Express, Vol. 21, Issue 4, pp. 4979-4985 (2013)
http://dx.doi.org/10.1364/OE.21.004979


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Abstract

We numerically investigate the direct and indirect optical interactions of pair circular resonators laterally confined by metal-insulator waveguide. The direct optical interaction shows the split of quality (Q) factors of bonding and antibonding states only happens for thick insulator. The indirect optical interaction through a waveguide is proposed to control the modes resonance and collect the output emissions. The Q factors of resonant modes versus the coupling distance (width of waveguide) are studied. The results show whispering gallery modes(WGMs) engaged into interaction are strongly coupled with the guided waves of waveguide once its width is close to the cut-off width of guided waves, while the coupled mode of two WGMs is not limited by this condition. High Q factor mode, combined with a robust wide emission waveguide(close to the cut-off width of second-order guided waves), can be realized from the bonding states of WGM and coupled WGM with an added wave envelope in waveguide. In addition to the pair resonators, the studies on four resonators interacted with each other through waveguide are also addressed and wide waveguide output is anticipated.

© 2013 OSA

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(140.3945) Lasers and laser optics : Microcavities

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 31, 2012
Revised Manuscript: January 14, 2013
Manuscript Accepted: January 21, 2013
Published: February 21, 2013

Citation
Kai-Jun Che, Mei-Xin Lei, and Zhi-Ping Cai, "Optical coupling and emission of metal-insulator confined circular resonators," Opt. Express 21, 4979-4985 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-4-4979


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