Photonics Research Group Home
Ghent University Journals/Proceedings
About People Research Publications Education Services


Publication detail

Authors: E. Hallynck, P. Bienstman
Title: Photonic crystal biosensor based on angular spectrum analysis
Format: International Conference Proceedings
Publication date: 11/2010
Journal/Conference/Book: Annual Symposium of the IEEE Photononics Benelux Chapter
Volume(Issue): p.161-164
Location: Delft, Netherlands
Citations: Look up on Google Scholar
Download: Download this Publication (192KB) (192KB)


There is and always will be a need for cost effective and reliable biosensors in many domains (e.g. medical, food industry, military). Apart from increasing sensitivity and detection limit, we must also consider ease of fabrication or implementation. In this work, we propose a novel photonic crystal based biosensor operating at a single frequency, contrary to resonance based sensors. Simulations have shown that for certain photonic crystal configurations there is a frequency range in which guided photonic crystal modes can couple to free space modes resulting in a Lorentzian shape in the angular spectrum. This Lorentzian peak can shift due to refractive index changes and sensitivities of 65 degrees per refractive index and more are possible.

Related Research Topics

Back to publication list