High Resolution NIR TFBG-Assisted Biochemical Sensors

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 tilted fiber Bragg gratings with and without SPR coatings demonstrate limits of detection ranging from the nM to the pM range without the need for thermal stabilization.

High resolution fiber optic surface plasmon resonance sensors with single-sided gold coatings

“…In recent years, the comprehensive working principle, the interrogations techniques, and the optimization methods of SRI sensitivity, for the TFBG-based SPR sensor have been investigated in our group [12][13][14][15][16][17][18][19][20]. As a result, a number of chemical [21] and biomedical [22][23][24][25][26] sensing applications were successfully demonstrated with the TFBG-based SPR platform, as well as probes for the optical properties of nanoscale metal films [27,28].…”

Lab on Fiber Technology for biological sensing applications

“…For both classes, thus, the development of a full pipeline devoted to reliable and repeatable fabrication of bio‐probes is a key milestone to achieve. Recently, the excellent works carried out by J. Albert H. Du and P. Russel and related coworkers represent important steps in this direction.…”

“…The potentialities of Tilted FBGs as biosensor platform for high sensitivity biological sample measurements are attested from recently published review papers . Here the attention is mainly focused on the latest biological sensing applications related to LPGs.…”

Ultrastable Combined Planar‐Fiber Plasmon Sensor

“…Plasmon sensors are an actual trend in modern sensorics and are already actively used in immunoassay systems . The operating principle of such sensors is based on the excitation of surface plasmon‐polaritons on a thin metal layer by means of optical radiation .…”

“…Plasmon sensors are an actual trend in modern sensorics and are already actively used in immunoassay systems. [1,2] The operating principle of such sensors is based on the excitation of surface plasmon-polaritons on a thin metal layer by means of optical radiation. [3][4][5] In this case, the effective energy transfer of optical radiation occurs when the projection of the phase velocity of the incident light coincides with the propagation velocity of the surface plasmon, which is called surface plasmon resonance (SPR) generation.…”