title: [Research on symmetrical optical waveguide based surface plasmon resonance sensing with spectral interrogation].
abstract: Surface plasmon resonance (SPR) sensors with spectral interrogation can adopt fiber to transmit light signals, thus leaving the sensing part separated, which is very convenient for miniaturization, remote-sensing and on-site analysis. Symmetrical optical waveguide (SOW) SPR has the same refractive index of the-two buffer media layers adjacent to the metal film, resulting in longer propagation distance, deeper penetration depth and better performance compared to conventional SPR In the present paper, we developed a symmetrical optical, waveguide (SOW) SPR sensor with wavelength interrogation. In the system, MgF2-Au-MgF2 film was used as SOW module for glucose sensing, and a fiber based light source and detection was used in the spectral interrogation. In the experiment, a refractive index resolution of 2.8 x 10(-7) RIU in fluid protocol was acquired. This technique provides advantages of high resolution and could have potential use in compact design, on-site analysis and remote sensing.
authors.forename: Yi-long
authors.initials: YL
authors.lastname: Zhang
authors.forename: Le
authors.initials: L
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Guo
authors.forename: Peng-fei
authors.initials: PF
authors.lastname: Zhang
authors.forename: Ji-hua
authors.initials: JH
authors.lastname: Guo
authors.forename: Hui
authors.initials: H
authors.lastname: Ma
authors.forename: Yong-hong
authors.initials: YH
authors.lastname: He
mesh_terms: D005947:Glucose / Q000032:analysis*; D058998:Remote Sensing Technology; D013057:Spectrum Analysis; D020349:Surface Plasmon Resonance
chemical_list: D005947:Glucose