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Journal Article
Numerical analysis and design of a new traveling-wave photodetector with an asymmetric i-layer cross section
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- Issue Date
- 2003-06
- Citation
- IEEE Journal of Selected Topics in Quantum Electronics, v.9, no.3, pp.770-775
- ISSN
- 1077-260X
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- We propose a new type of the traveling-wave photodetector (TWPD) that has an asymmetric intrinsic layer cross section to enhance bandwidth. In this paper, analysis and design of TWPDs are presented using the finite-difference time-domain method. A full-wave analysis is performed by a numerical technique and impulse responses are obtained in a linear regime. The simulation and experiment results show that 3-dB bandwidth is increased by the difference between electron and hole saturation velocities.