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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 23 — Dec. 1, 2011
  • pp: 4494–4496

Dual-band optical filter based on a single microdisk resonator

Qingzhong Huang, Xinliang Zhang, Jinsong Xia, and Jinzhong Yu  »View Author Affiliations

Optics Letters, Vol. 36, Issue 23, pp. 4494-4496 (2011)

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We propose and experimentally demonstrate a dual-band optical filter based on a single microdisk resonator. An analytical model is built based on the transfer matrix method and is applied to simulate the properties of such a device. Competition and interference of the dual modes in the resonator lead to dual-band filtering with high isolation. As the finite-difference time-domain simulation illustrates, two low-order resonant modes can be effectively triggered by optimizing the waveguide width and spacing gap between the compact resonator and waveguides. In experiment, a double side-coupled microdisk resonator was fabricated on a nanophotonic silicon- on-insulator platform, and dual-band bandpass filtering is realized with an optical isolation higher than 20 dB and an insertion loss lower than 2 dB . The experimental results agree well with our modeling results.

© 2011 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.5750) Optical devices : Resonators
(230.7390) Optical devices : Waveguides, planar
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

Original Manuscript: September 6, 2011
Revised Manuscript: October 16, 2011
Manuscript Accepted: October 17, 2011
Published: November 22, 2011

Qingzhong Huang, Xinliang Zhang, Jinsong Xia, and Jinzhong Yu, "Dual-band optical filter based on a single microdisk resonator," Opt. Lett. 36, 4494-4496 (2011)

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