| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 3, 2008
|
|
|---|---|---|
| Article Number | 08007 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.2971/jeos.2008.08007 | |
| Published online | 04 February 2008 | |
Regular papers
Slow-light enhanced absorption for bio-chemical sensing applications: potential of low-contrast lossy materials
MIC – Department of Micro and Nanotechnology, NanoDTU, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
Received:
2
January
2008
Slow-light enhanced absorption in liquid-infiltrated photonic crystals has recently been proposed as a route to compensate for the reduced optical path in typical lab-on-a-chip systems for bio-chemical sensing applications. A simple perturbative expression has been applied to ideal structures composed of lossless dielectrics. In this work we study the enhancement in structures composed of lossy dielectrics such as a polymer. For this particular sensing application we find that the material loss has an unexpected limited drawback and surprisingly, it may even add to increase the bandwidth for low-index contrast systems such as polymer devices.
Key words: Biosensor / photonic crystal / optofluidics / slow light
© The Author(s) 2008. All rights reserved.
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