Title :
High Resolution NIR TFBG-Assisted Biochemical Sensors
Author :
Marquez-Cruz, Violeta ; Albert, Jacques
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, ON, Canada
Abstract :
Tilted fiber Bragg gratings (TFBGs) have shown to be a suitable tool for exciting surface plasmon waves in a comparable manner as in typical attenuated total reflection Kretschmann configurations. In this paper, we present a comparative analysis of the characteristics of prism and grating configurations for generating surface plasmon resonance (SPR) for 800 and 1550 nm wavelengths. Results indicate that longer wavelength SPR may present advantages in sensing. Recent label-free biochemical sensing results using NIR TFBGs with and without SPR coatings demonstrate limits of detection ranging from the nM to the pM range without the need for thermal stabilization.
Keywords :
Bragg gratings; biosensors; chemical sensors; fibre optic sensors; surface plasmon resonance; SPR coatings; grating configurations; high-resolution NIR TFBG-assisted biochemical sensors; prism; surface plasmon resonance; surface plasmon waves; tilted fiber Bragg gratings; wavelength 1550 nm; wavelength 800 nm; Films; Metals; Optical fiber sensors; Optical fibers; Refractive index; Sensitivity; SPR sensors; Surface plasmon resonance; biochemical sensors; optical fiber sensors; tilted fiber Bragg gratings;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2015.2431912
