Parametric characterization of self-heating in depletion-type Si micro-ring modulators

Myung Jin Shin, Yoojin Ban, Byung Min Yu, Jinsoo Rhim, Lars Zimmermann, Woo Young Choi

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


The influence of self-heating on the static transmission characteristics of depletion-type Si micro-ring modulators (MRMs) is investigated. Self-heating, caused by free-carrier absorption of the input light inside the doped ring waveguide, increases the effective refractive index of the ring waveguide and results in the red-shifted resonance wavelength. This phenomenon is modeled based on the coupled-mode equation with a newly-introduced self-heating coefficient R. The accuracy of our model is confirmed by measurement. In addition, dependence of R on device size and doping concentration is experimentally investigated and the resulting dependence is explained.

Original languageEnglish
Article number7462176
Pages (from-to)116-122
Number of pages7
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number6
Publication statusPublished - 2016 Nov 1

Bibliographical note

Publisher Copyright:
© 1995-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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