A novel demultiplexing photodetector integrated with an arc absorbing cavity

Xingguang Zhou; Yongqing Huang; Hui Huang; Xiaomin Ren; Yufeng Xu; Xin Haiming

doi:10.1117/12.803276

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11 November 2008 A novel demultiplexing photodetector integrated with an arc absorbing cavity

Xingguang Zhou, Yongqing Huang, Hui Huang, Xiaomin Ren, Yufeng Xu, Xin Haiming

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Proceedings Volume 7136, Optical Transmission, Switching, and Subsystems VI; 71364F (2008) https://doi.org/10.1117/12.803276
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

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.

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Xingguang Zhou, Yongqing Huang, Hui Huang, Xiaomin Ren, Yufeng Xu, and Xin Haiming "A novel demultiplexing photodetector integrated with an arc absorbing cavity", Proc. SPIE 7136, Optical Transmission, Switching, and Subsystems VI, 71364F (11 November 2008); https://doi.org/10.1117/12.803276

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