Space charge balance in high-speed high-saturation-current photodetecters

Xiaowei Li, Stephane Demiguel, Ning Li, J. C. Campbell, David Tulchinsky, Keith J. Williams

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


Charge balance in the depletion region of a photodiode can be used to reduce the space charge effect. A partially depleted absorber (PDA) InGaAs/InP photodetecter with space charge balance and transit time balance has been demonstrated. A 1dB large signal compression current of 24mA was achieved at 48GHz for an 8μm × 8μm photodiode. A 100μm-diameter photodiode achieved a maximum saturation current of 199mA at 1GHz.

Original languageEnglish (US)
Pages (from-to)458-464
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2003
EventActive and Passive Optical Components for WDM Communications III - Orlando, FL, United States
Duration: Sep 8 2003Sep 11 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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