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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 20 — Oct. 15, 1998
  • pp: 1570–1572

Second-order filtering and sensing with partially coupled traveling waves in a single resonator

Brent E. Little, Sai T. Chu, and Hermann A. Haus  »View Author Affiliations


Optics Letters, Vol. 23, Issue 20, pp. 1570-1572 (1998)
http://dx.doi.org/10.1364/OL.23.001570


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Abstract

The counterpropagating waves in a single traveling-wave cavity can be partially coupled by means of a small perturbation such as a notch. When it is side coupled to a waveguide, this single cavity yields a general second-order (Chebyshev) reflection response in the waveguide, which is useful for narrow-bandwidth reflecting applications. In a different application, the cavity amplifies small reflections induced by external perturbations, thus finding use in ultrafine sensing. Amplification factors as great as 10<sup>12</sup> are predicted for the highest-<i>Q</i> microsphere resonators. The analytic theory of these devices is presented.

© 1998 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(130.6010) Integrated optics : Sensors
(260.5740) Physical optics : Resonance

Citation
Brent E. Little, Sai T. Chu, and Hermann A. Haus, "Second-order filtering and sensing with partially coupled traveling waves in a single resonator," Opt. Lett. 23, 1570-1572 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-20-1570

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