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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 19 — Jul. 1, 2000
  • pp: 3408–3412

Fiber-Optic Microsensors to Measure Backscattered Light Intensity in Biofilms

Haluk Beyenal, Zbigniew Lewandowski, Chris Yakymyshyn, Brad Lemley, and Joe Wehri  »View Author Affiliations


Applied Optics, Vol. 39, Issue 19, pp. 3408-3412 (2000)
http://dx.doi.org/10.1364/AO.39.003408


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Abstract

We have constructed tapered fiber-optic microsensors with a tip diameter of less than 10 μm to measure profiles of backscattered light in biofilms, which are thin layers of micro-organisms firmly attached to surfaces. The observed response agrees well with local effective diffusivity microelectrode measurements, with <i>R</i><sup>2</sup> > 0.85. A strong relation between signal intensity and wavelength has been observed at 670 and 1320 nm. These sensors have the potential to replace local effective diffusivity microelectrodes for true <i>in situ</i> biofilm measurements.

© 2000 Optical Society of America

OCIS Codes
(290.1350) Scattering : Backscattering
(290.1990) Scattering : Diffusion

Citation
Haluk Beyenal, Zbigniew Lewandowski, Chris Yakymyshyn, Brad Lemley, and Joe Wehri, "Fiber-Optic Microsensors to Measure Backscattered Light Intensity in Biofilms," Appl. Opt. 39, 3408-3412 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-19-3408

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