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Proceedings Paper

A novel demultiplexing photodetector integrated with an arc absorbing cavity
Author(s): Xingguang Zhou; Yongqing Huang; Hui Huang; Xiaomin Ren; Yufeng Xu; Xin Haiming
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Paper Abstract

A novel integrated demultiplexing photodetector which consists of a filter cavity and an arc absorbing cavity is proposed in this paper. The top mirror of absorbing cavity is designed to be curved, which can increase the times of light reflection. The maximum quantum efficiency of TE lightwave can reach 81.84%, while maximum of TM is 65.62%. An obvious near-to-zero domain of reflectivity of TM lightwave leads to its low quantum efficiency. The impact of incident angle on quantum efficiency is demonstrated by comparing two series of incident angles in two devices which have high and low quantum efficiency respectively. In addition, the spectral response linewidth of this novel photodetector is less than 0.8 nm.

Paper Details

Date Published: 11 November 2008
PDF: 11 pages
Proc. SPIE 7136, Optical Transmission, Switching, and Subsystems VI, 71364F (11 November 2008); doi: 10.1117/12.803276
Show Author Affiliations
Xingguang Zhou, Beijing Univ. of Posts and Telecommunications (China)
Yongqing Huang, Beijing Univ. of Posts and Telecommunications (China)
Hui Huang, Beijing Univ. of Posts and Telecommunications (China)
Xiaomin Ren, Beijing Univ. of Posts and Telecommunications (China)
Yufeng Xu, Beijing Univ. of Posts and Telecommunications (China)
Xin Haiming, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 7136:
Optical Transmission, Switching, and Subsystems VI
Ken-ichi Kitayama; Pierpaolo C. Ghiggino; Kim Roberts; Yikai Su, Editor(s)

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