Translator Disclaimer
29 April 2009 Porous waveguide in the Kretschmann configuration for small molecule detection
Author Affiliations +
In this work, we theoretically and experimentally demonstrate a highly sensitive porous silicon membrane waveguide biosensor in the Kretschmann configuration, and show how the cladding material directly impacts the waveguide sensor detection sensitivity and resonance width. Dielectric and metal-clad porous waveguides in the Kretchmann configuration have the potential to achieve significantly enhanced performance for small molecule detection compared to planar waveguide and surface plasmon resonance sensors due to increased surface area and strong field confinement in the porous waveguide layer. First order perturbation theory calculations predict that the quality factors of polymer-cladded porous silicon waveguides with porous silicon losses less than ~500 dB/cm are at least two times larger than the quality factors of gold-cladded porous silicon waveguides and traditional surface plasmon resonance sensors.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yang Jiao, Guoguang Rong, and Sharon M. Weiss "Porous waveguide in the Kretschmann configuration for small molecule detection", Proc. SPIE 7322, Photonic Microdevices/Microstructures for Sensing, 732205 (29 April 2009);

Back to Top