Optofluidic Fano resonance photonic crystal refractometric sensors
Abstract
We report an ultra-compact surface-normal optofluidic refractometric sensor based on a two-dimensional silicon photonic crystal on insulator. In contrast to the conventional symmetric Lorentzian resonance that is prevalently used in the label-free sensors, the asymmetric lineshape and steep peak-to-dip transition of a Fano resonance enable the enhanced detection sensitivity. The detection limit of 1.3 × 10−6 refractive index units is achieved, which is among the lowest reported experimentally in the defect-free photonic crystal sensors.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 27, 2017
- Source ID
- 10.1063/1.4977563
Entities
People
- Deyin Zhao
- Hongjun Yang
- Shuling Wang
- Weidong Zhou
- Yonghao Liu
- Yuze Sun
Organizations
- Army Research Office
- National Science Foundation
- University of Texas at Arlington