Optical detection of single nanoparticles with a subwavelength fiber-taper

Jiangang Zhu, Şahin Kaya Özdemir, Lan Yang

Research output: Contribution to journalArticle

31 Scopus citations


A nanoparticle detection scheme with single particle resolution is presented. The sensor contains only a taper fiber, thus offering the advantages of compactness and installation flexibility. The sensing method is based on monitoring the transmitted light power which shows abrupt jumps with each particle binding to the taper surface. The experimental validation of the sensor is demonstrated with polystyrene nanoparticles of radii 120 and 175 nm in the 1550-nm wavelength band.

Original languageEnglish (US)
Article number5934580
Pages (from-to)1346-1348
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number18
Publication statusPublished - Sep 9 2011


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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