Simulation of surface-modified porous silicon photonic crystals for biosensing applications

I. Suárez*, V. Chirvony, D. Hill, J. Martínez-Pastor

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In this work realistic biosensing structures based on the integration of porous silicon photonic crystals with polymer coating technology are presented. Microcavities and rugate filters are chosen as the photonic crystal configuration. The deposition of a polymer layer on the pore walls of these structures is proposed to improve the selectivity and sensitivity of the sensing function. A complete effective refractive index model including the polymer layer, the target and external effects like silicon oxidation has been developed in order to accurately simulate the structures. It is expected that the proposed structures could be used as low cost, highly integrated and highly sensitive biological sensors.

Original languageEnglish
Pages (from-to)304-311
Number of pages8
JournalPhotonics and Nanostructures - Fundamentals and Applications
Issue number3
Publication statusPublished - 1 Jun 2012


  • Biosensor
  • Microcavity
  • Polymer
  • Porous silicon
  • Rugate filter


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