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Optics Letters

Optics Letters


  • 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)

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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

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)

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  1. B. E. Little, S. T. Chu, H. A. Haus, J. Foresi, and J.-P. Laine, J. Lightwave Technol. 15, 998 (1997).
  2. R. Kazarinov, C. H. Henry, and A. Olsson, IEEE J. Quantum Electron. QE-23, 1419 (1987).
  3. H. Haus and Y. Lai, J. Lightwave Technol. 9, 754 (1991).
  4. J. D. Joannopoulos, R. D. Meade, and J. N. Winn, Photonic Crystals: Molding the Flow of Light (Princeton U. Press, Princeton, N.J., 1995).
  5. D. A. Ackerman, M. I. Dahbura, Y. Shani, C. H. Henry, R. C. Kistler, R. F. Kazarinov, and C. Y. Kuo, Appl. Phys. Lett. 58, 449 (1991).
  6. B. E. Little, J.-P. Laine, and S. T. Chu, Opt. Lett. 22, 4 (1997).
  7. B. E. Little, H. A. Haus, J. S. Foresi, L. C. Kimerling, E. P. Ippen, and D. J. Ripin, IEEE Photon. Technol. Lett. 10, 816 (1998).
  8. M. Kuznetsov and H. A. Haus, IEEE J. Quantum Electron. QE-19, 1505 (1983).
  9. D. Marcuse, Theory of Dielectric Optical Waveguides (Academic, New York, 1974), Chap. 1.
  10. S. T. Chu and S. K. Chaudhuri, J. Lightwave Technol. 7, 2033 (1989).

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