Ultra-Wide Range Refractive Index PCF-Based SPR Sensor for Lab-on-Chip Applications

Using finite element method, a novel photonic crystal fiber (PCF) based surface plasmon resonance (SPR) sensor, capable of detecting multiple samples simultaneously, is designed and analyzed in this paper. Applying perfectly matched layer boundary condition, maximum wavelength sensitivity of 22,000 nm/RIU, amplitude sensitivity of 1629 RIU
^{- 1}
and an ultra-wide range refractive index (RI) from 1.17 to
1.43,
are reported for detecting gaseous and liquid materials. These features will open to design, analyze, fabricate, and test Lab-on-Chip (LOC) devices for plant science, food safety, environment analysis, and medical diagnosis.