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Design of broadband and high-output power uni-traveling-carrier photodiodes


Design of broadband and high-output power uni-traveling-carrier photodiodes

Zhang, Rong, Hraimel, Bouchaib, Li, Xue, Zhang, Peng and Zhang, Xiupu (2013) Design of broadband and high-output power uni-traveling-carrier photodiodes. Optics Express, 21 (6). pp. 6943-6954. ISSN 1094-4087

Text (application/pdf)
oe-21-6-6943.pdf - Published Version

Official URL: http://dx.doi.org/10.1364/OE.21.006943


In this paper, physically-based simulations are carried out to investigate and design broadband and high-output power uni-traveling carrier (UTC) photodiodes. The physical model is first verified by comparison to experimentally measured results. The graded-bandgap structure, which can induce potential gradient, is considered to be used in the absorption layers. It is shown that the electric field in the absorption layer is increased by the gradient, thus the performance of bandwidth and saturation current is improved by 36.6% and 40% respectively for our considered photodiode. Moreover, a modified graded-bandgap structure is proposed to further increase the electric field, and an additional 9.5% improvement in bandwidth is achieved. The final proposed UTC-PD structures will result in 399-GHz bandwidth and 49-mA DC saturation current.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Article
Authors:Zhang, Rong and Hraimel, Bouchaib and Li, Xue and Zhang, Peng and Zhang, Xiupu
Journal or Publication:Optics Express
Date:March 2013
  • Concordia Open Access Author Fund
Digital Object Identifier (DOI):10.1364/OE.21.006943
ID Code:977536
Deposited On:19 Aug 2013 18:20
Last Modified:18 Jan 2018 17:44
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