Microfluidics and Nanofluidics

, 6:425

Highly sensitive tuning of coupled optical ring resonators by microfluidics

  • Siyka I. Shopova
  • Yuze Sun
  • A. T. Rosenberger
  • Xudong Fan
Short Communication

DOI: 10.1007/s10404-008-0372-7

Cite this article as:
Shopova, S.I., Sun, Y., Rosenberger, A.T. et al. Microfluid Nanofluid (2009) 6: 425. doi:10.1007/s10404-008-0372-7

Abstract

The authors develop optofluidic coupled ring resonator (OCRR) system in which one of the ring resonators serves as a microfluidic channel. Highly sensitive tuning of the OCRR is demonstrated by making small changes in the refractive index of the fluid. A refractometric sensing scheme using the OCRR is proposed and demonstrated, allowing for measuring a refractive index change down to 10−9 refractive index units, two orders of magnitude better than a single ring resonator.

Keywords

Coupled resonatorsMicrofluidicsSensing

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Siyka I. Shopova
    • 1
  • Yuze Sun
    • 1
  • A. T. Rosenberger
    • 2
  • Xudong Fan
    • 1
  1. 1.Biological Engineering DepartmentUniversity of MissouriColumbiaUSA
  2. 2.Department of PhysicsOklahoma State UniversityStillwaterUSA