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Optics Letters

Optics Letters


  • Vol. 30, Iss. 12 — Jun. 15, 2005
  • pp: 1476–1478

Vertically coupled photonic crystal optical filters

Min Qiu  »View Author Affiliations

Optics Letters, Vol. 30, Issue 12, pp. 1476-1478 (2005)

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A novel design of optical filters, based on the vertical coupling between channel waveguides and photonic crystal microcavities, is proposed. The choice of channel waveguides can be arbitrary because of the flexibility of the device geometry, which makes it possible to utilize conventional low-loss waveguides. The separation between waveguides and microcavities, which determines filter bandwidths and drop efficiencies, can be accurately controlled by material growth (or deposition). The filters might also be switchable, e.g., by mechanical movements of microcavities. An example of a reflection-type optical filter is demonstrated in numerical experiments using the finite-difference time-domain method.

© 2005 Optical Society of America

OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(230.3990) Optical devices : Micro-optical devices
(230.5750) Optical devices : Resonators

Min Qiu, "Vertically coupled photonic crystal optical filters," Opt. Lett. 30, 1476-1478 (2005)

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