Details

Autor(en) / Beteiligte

• Gonzalo Wangüemert-Pérez, J
• Cheben, Pavel
• Ortega-Moñux, Alejandro
• Alonso-Ramos, Carlos
• Pérez-Galacho, Diego
• Halir, Robert
• Molina-Fernández, Iñigo
• Xu, Dan-Xia
• Schmid, Jens H

Titel

Evanescent field waveguide sensing with subwavelength grating structures in silicon-on-insulator

Ist Teil von

• Optics letters, 2014-08, Vol.39 (15), p.4442

Ort / Verlag

United States

Erscheinungsjahr

2014

Quelle

MEDLINE

Beschreibungen/Notizen

• We explore, to the best of our knowledge, the potential of diffractionless subwavelength grating waveguides for sensing applications. We show that by subwavelength patterning of silicon-wire waveguides the field delocalization can be engineered to increase the sensitivity. Fully vectorial 3D-FDTD simulations confirm the sensitivity enhancement, achieving sensitivities of 0.83  RIU/RIU and 1.5·10(-3)  RIU/nm for bulk and surface sensing, respectively, which compare favorably to state-of-the-art sensing waveguides.