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Silicon photonic guided mode resonance filter for evanescent field molecular sensing
- Source :
- Advances in Optical Sciences Congress.
- Publication Year :
- 2009
- Publisher :
- OSA, 2009.
-
Abstract
- We present experimental and theoretical results of label-free molecular sensing with the TM mode of a 0.22 µm thick silicon slab waveguide used in a guided mode resonance configuration. Due to the strong overlap of the evanescent field of the waveguide mode with a molecular layer attached to the surface, these sensors exhibit high sensitivity, while their fabrication and packaging requirements are minimal. Experimentally, we demonstrate a resonance wavelength shift of ~1 nm when a monolayer of streptavidin is attached to the surface, in good agreement with calculations based on rigorous coupled wave analysis.
- Subjects :
- Waveguide (electromagnetism)
Materials science
Silicon photonics
Silicon
Guided-mode resonance
business.industry
Physics::Optics
chemistry.chemical_element
Optics
chemistry
Optoelectronics
Surface plasmon resonance
business
Rigorous coupled-wave analysis
Refractive index
Electron-beam lithography
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Advances in Optical Sciences Congress
- Accession number :
- edsair.doi...........1e8ef3460dc3837c86607e2017340b33