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Applied Optics

Applied Optics


  • Vol. 39, Iss. 24 — Aug. 20, 2000
  • pp: 4263–4269

Theory and experiments of a three-cavity wavelength-selective photodetector

Kai Liu, Yongqing Huang, and Xiaomin Ren  »View Author Affiliations

Applied Optics, Vol. 39, Issue 24, pp. 4263-4269 (2000)

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We propose a novel wavelength-selective photodetector with three subcavities, i.e., a filtering cavity, a spacer cavity, and an absorption cavity, for obtaining a narrow spectral response linewidth and a high quantum efficiency simultaneously. A theoretical prediction has been made that a less than 1-nm linewidth and a quantum efficiency as high as 90% are possible. We discuss the effects of the key factors on the performance of this type of photodetector that has been designed and fabricated. A spectral response linewidth of approximately 1.4 nm (FWHM) and an external quantum efficiency higher than 50% have been achieved experimentally. Such devices are promising for wavelength-division multiplexing applications.

© 2000 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(230.5160) Optical devices : Photodetectors

Original Manuscript: June 2, 1999
Revised Manuscript: November 29, 1999
Published: August 20, 2000

Kai Liu, Yongqing Huang, and Xiaomin Ren, "Theory and experiments of a three-cavity wavelength-selective photodetector," Appl. Opt. 39, 4263-4269 (2000)

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