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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 27, Iss. 21 — Nov. 1, 2009
  • pp: 4697–4702

Monolithically Integrated Photodetector Array With a Multistep Cavity for Multiwavelength Receiving Applications

Xiaofeng Duan, Yongqing Huang, Hui Huang, Xiaomin Ren, Qi Wang, Yufeng Shang, Xian Ye, and Shiwei Cai

Journal of Lightwave Technology, Vol. 27, Issue 21, pp. 4697-4702 (2009)


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Abstract

A monolithically integrated photodetector array used for multiwavelength receiving was realized by growth of an ${\hbox {InP}}-{\hbox {In}}_{0.53}{\hbox {Ga}}_{0.47}{\hbox {As}}-{\hbox {InP}}$ p-i-n structure on a GaAs/AlGaAs Fabry-Pérot filter. The filter with a multistep cavity was fabricated by wet etching and regrowth. Each photodetector in the array detects a different wavelength, so the array functions as a multiwavelength receiver. The high-quality GaAs/InP heteroepitaxy was realized by employing a thin low temperature buffer layer. The photodetector array detects four wavelength channels, whose interval is about 10 nm, around 1550 nm. A full-width half-maximum less than 0.5 nm, a peak quantum efficiency over 15%, and a 3-dB bandwidth of 9 GHz were simultaneously obtained in the photodetector array.

© 2009 IEEE

Citation
Xiaofeng Duan, Yongqing Huang, Hui Huang, Xiaomin Ren, Qi Wang, Yufeng Shang, Xian Ye, and Shiwei Cai, "Monolithically Integrated Photodetector Array With a Multistep Cavity for Multiwavelength Receiving Applications," J. Lightwave Technol. 27, 4697-4702 (2009)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-27-21-4697

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