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Proceedings Paper

Biasing effects on the characteristics and the optimization of mushroom waveguide photodetectors (WGPDs)
Author(s): Yasser M. El-Batawy; Sarah Youssef
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Paper Abstract

Waveguide photodetectors (WGPDs) are considered a leading candidate to overcome the bandwidth-quantum efficiency trade-off as the flow of the photon and carrier fluxes are perpendicular to each other enabling high date rate applications. Mushroom-WGPD was proposed to overcome the trade-off between the capacitance of the photodetector and the contact resistance. In this paper, an extended calibrated circuit model for mushroom-WGPD, including the effect of the biasing of the photodetector, is presented so resulting in the feasibility of a complete circuit simulation of the entire photoreceiver circuit. The effects of the biasing over the performance of Mushroom-WGPDs have been explored for different loads and different dimensions of the device. Based on the studies of different parameters for design and materials, optimization has been performed for the mushroom-WGPD. With this optimization, the optimal values of the thickness of the absorption layer to produce the highest bandwidth of the photodetector are obtained for different biasing values. These optimizations are performed for different areas of the photodetector and also for different load resistors, and they result in a significant improvement in the performance of the mushroom-WGPDs.

Paper Details

Date Published: 21 August 2014
PDF: 5 pages
Proc. SPIE 9233, International Symposium on Photonics and Optoelectronics 2014, 92331S (21 August 2014); doi: 10.1117/12.2069585
Show Author Affiliations
Yasser M. El-Batawy, Cairo Univ. (Egypt)
Sarah Youssef, Cairo Univ. (Egypt)

Published in SPIE Proceedings Vol. 9233:
International Symposium on Photonics and Optoelectronics 2014
Zhiping Zhou, Editor(s)

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