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Optics Letters

Optics Letters


  • Vol. 21, Iss. 24 — Dec. 15, 1996
  • pp: 2017–2019

Single-mode waveguide microcavity for fast optical switching

Pierre R. Villeneuve, Daniel S. Abrams, Shanhui Fan, and J. D. Joannopoulos  »View Author Affiliations

Optics Letters, Vol. 21, Issue 24, pp. 2017-2019 (1996)

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We investigate the properties of a tunable single-mode waveguide microcavity that is well suited for frequency modulation and switching. The cavity mode has a volume of less than one cubic half-wavelength, and the resonant frequency is tuned by refractive-index modulation. We suggest using a photorefractive effect to drive the device, based on the photoionization of deep donor levels known as DX centers in compound semiconductors. Picosecond on–off switching times are achievable when two of these cavities are placed in series. The resulting switch has the advantages of being compact and requiring as little as 10 pJ of energy of operate.

© 1996 Optical Society of America

Original Manuscript: July 26, 1996
Published: December 15, 1996

Pierre R. Villeneuve, Daniel S. Abrams, Shanhui Fan, and J. D. Joannopoulos, "Single-mode waveguide microcavity for fast optical switching," Opt. Lett. 21, 2017-2019 (1996)

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  13. It may be possible to reduce the recovery time by raising the temperature or by changing the chemical composition of the semiconductor.

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