InGaAs/GaAs Quantum-Dot Superluminescent Diode for Optical Sensor and Imaging

Hery Susanto Djie, Clara E. Dimas, Dong Ning Wang, Boon Ooi, James C.M. Hwang

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


We report on the design and fabrication of a novel wideband superluminescent diode (SLD) based on InGaAs/GaAs quantum-dot structure. In this device, we monolithically integrate a photon absorber section to suppress lasing action and optical feedback oscillation. The fabricated SLDs produce a close-to-Gaussian shaped spectrum centered at 1210 nm with a bandwidth of 135 nm. Spectral ripple as low as 0.3 dB has been measured.

Original languageEnglish (US)
Pages (from-to)251-257
Number of pages7
JournalIEEE Sensors Journal
Issue number2
StatePublished - Jan 1 2007


  • Broadband light source
  • optical coherence tomography (OCT)
  • quantum dot (QD)
  • superluminescent diode

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering


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