Mode-multiplexed waveguide sensor

Rajib Ahmed*, Ahmmed A. Rifat, Ali K. Yetisen, Seok Hyun Yun, Safyan Khan, Haider Butt

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Optical sensors enable quantification of analyte concentrations non-invasively without being affected from electromagnetic fields. The development of single-mode waveguides (WGs) is simple approach; however, limitations in the spatial distribution of the refractive index and the inability to sense multiple samples at the same time. Here, we demonstrate a multi-mode WG model and matrix inversion method (MIM) to improve spatial information in at least one dimension. This method is used to optimize and estimate three external stimulus properties in TE00, TE01 and TM00 multiplexed modes for a semi-triangular ring resonator configuration. The multi-mode WG and MIM may have applications in the development of biosensors for multi-analyte detection.

Original languageEnglish
Pages (from-to)444 - 455
Number of pages12
JournalJournal of Electromagnetic Waves and Applications
Issue number4
Early online date16 Dec 2015
Publication statusE-pub ahead of print - 16 Dec 2015


  • directional couplers
  • mode multiplexing
  • multi-mode waveguides
  • optical sensing
  • sensors

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)


Dive into the research topics of 'Mode-multiplexed waveguide sensor'. Together they form a unique fingerprint.

Cite this