An equivalent circuit model for a Ge Waveguide Photodetector on Si

Jeong Min Lee, Seong Ho Cho, Woo Young Choi

Research output: Contribution to journalArticle

15 Citations (Scopus)


We present an equivalent circuit model with improved accuracy for 1.5-μm germanium waveguide-type vertical photodetectors on a silicon-on-insulator substrate. Our model consists of passive circuit components, two current sources for photogenerated carrier transports, and one noise current source. Model parameters are extracted from electrical S-parameter measurements, TCAD simulations of photodetection frequency responses, and noise measurements. The resulting equivalent circuit model accurately provides photodetection frequency responses at different bias voltages and should be of great use for high-performance optical receiver circuit design.

Original languageEnglish
Article number7572036
Pages (from-to)2435-2438
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number21
Publication statusPublished - 2016 Nov 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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