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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 18,
  • Issue 6,
  • pp. 061301-
  • (2020)

Distributed parameter circuit model for wideband photodiodes with inductive coplanar waveguide electrodes

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Abstract

An equivalent circuit model including multi-section distributed parameters is proposed to analyze wideband photodiodes (PDs) with coplanar waveguide (CPW) electrodes. The model helps extract CPW parameters as well as intrinsic bandwidth parameters so that the influence of the CPW structure can be investigated, making it valuable for the design of high-performance PDs. PDs with an inductive 115 Ω impedance CPW are fabricated, and the 3 dB bandwidth is improved from 28 GHz to 37.5 GHz compared with PDs with a conventional 50 Ω impedance CPW.

© 2020 Chinese Laser Press

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