Details

Autor(en) / Beteiligte

• Sana, Amrita Kumar
• Honzawa, Keita
• Amemiya, Yoshiteru
• Yokoyama, Shin

Titel

Silicon photonic crystal resonators for label free biosensor

Ist Teil von

• Japanese Journal of Applied Physics, 2016-04, Vol.55 (4S), p.4

Ort / Verlag

The Japan Society of Applied Physics

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report the fabrication and characterization of a two-dimensional (2D) silicon photonic crystal biosensor consisting of waveguides and cavity-type and defect-type resonators for enhancing the interactions between light and biomaterials. Sensitivity was measured using sucrose solution and the sensor showed the highest sensitivity [1570 nm/RIU (refractive index unit)] ever reported. We also investigated cavity size effects on resonance wavelength shift, and we observed that a large cavity exhibits a greater resonance wavelength shift. The fabricated sensor has shown a high Q of ∼105 in water and a device figure of merit of 1.2 × 105, which represent the improvements of the device performance over other photonic-crystal-based sensors.