Coating influence on the refractometric sensitivity of plasmonic optical fiber grating spectral combs

Gold-coated tilted fiber Bragg gratings (TFBGs) can now be considered as a mature technology for lab-on-fiber sensing based on surface plasmon resonance (SPR) excitation. This sensing architecture brings considerable assets such as easy light injection, temperature fluctuations immunity and remote operation in very small volumes of analytes. Different metal configurations have been used so far, without considerations about their relative performances in terms of surrounding refractive index (SRI) sensing. In this work, we study the impact of the coating on the cladding mode distribution in the TFBG transmitted amplitude spectrum and subsequently on its SRI sensitivity. Different configurations of gold coating are produced and tested, relying on both the sputtering and electroless deposition processes. Interesting spectral features are reported, confirming that the coating thickness and its relative disparity are important design parameters that drive the overall sensing performances.

[1]  F. Baldini,et al.  Optical fibre gratings as tools for chemical and biochemical sensing , 2011, Analytical and Bioanalytical Chemistry.

[2]  Rong-Seng Chang,et al.  D-type fiber biosensor based on surface-plasmon resonance technology and heterodyne interferometry. , 2005, Optics letters.

[3]  Tuan Guo,et al.  Tilted Fiber Bragg Grating Sensors , 2018 .

[4]  S. Yee,et al.  A fiber-optic chemical sensor based on surface plasmon resonance , 1993 .

[5]  J. Albert,et al.  Highly sensitive detection of urinary protein variations using tilted fiber grating sensors with plasmonic nanocoatings. , 2016, Biosensors & bioelectronics.

[6]  X. Qiao,et al.  High resolution fiber optic surface plasmon resonance sensors with single-sided gold coatings. , 2016, Optics express.

[7]  Francesco Baldini,et al.  Towards a Uniform Metrological Assessment of Grating-Based Optical Fiber Sensors: From Refractometers to Biosensors , 2017, Biosensors.

[8]  Tuan Guo,et al.  Plasmonic Optical Fiber-Grating Immunosensing: A Review , 2017, Sensors.

[9]  A. Trouillet,et al.  Chemical sensing by surface plasmon resonance in a multimode optical fibre , 1996 .

[10]  Valérie Voisin,et al.  Fiber-Optic SPR Immunosensors Tailored To Target Epithelial Cells through Membrane Receptors. , 2015, Analytical chemistry.

[11]  C. Caucheteur,et al.  Small biomolecule immunosensing with plasmonic optical fiber grating sensor. , 2016, Biosensors & bioelectronics.

[12]  C. Caucheteur,et al.  Cancer biomarker sensing using packaged plasmonic optical fiber gratings: Towards in vivo diagnosis. , 2017, Biosensors & bioelectronics.

[13]  D. Thomson,et al.  Optical fiber refractometer using narrowband cladding-mode resonance shifts. , 2007, Applied optics.

[14]  Ali Khademhosseini,et al.  Surface plasmon resonance fiber sensor for real-time and label-free monitoring of cellular behavior. , 2014, Biosensors & bioelectronics.

[15]  Yu-Lung Lo,et al.  Ultrahigh sensitivity polarimetric strain sensor based upon D-shaped optical fiber and surface plasmon resonance technology. , 2011, Optics letters.

[16]  Jacques Albert,et al.  Near-infrared grating-assisted SPR optical fiber sensors: design rules for ultimate refractometric sensitivity. , 2015, Optics express.

[17]  B. D. Gupta,et al.  Surface Plasmon resonance based tapered fiber optic sensor with different taper profiles , 2008, 2009 14th OptoElectronics and Communications Conference.

[18]  Y. Shevchenko,et al.  Polarization-selective grating excitation of plasmons in cylindrical optical fibers. , 2010, Optics letters.

[19]  Jiří Homola,et al.  Optical fiber sensor based on surface plasmon excitation , 1995 .

[20]  U. Krull,et al.  Localized surface plasmon resonance: nanostructures, bioassays and biosensing--a review. , 2011, Analytica chimica acta.

[21]  E. Kretschmann,et al.  Notizen: Radiative Decay of Non Radiative Surface Plasmons Excited by Light , 1968 .

[22]  Wenjun Zhou,et al.  Anisotropic effective permittivity of an ultrathin gold coating on optical fiber in air, water and saline solutions. , 2014, Optics express.

[23]  Patrice Mégret,et al.  Interrogation technique for TFBG-SPR refractometers based on differential orthogonal light states. , 2011, Applied optics.

[24]  Marc Wuilpart,et al.  High resolution interrogation of tilted fiber grating SPR sensors from polarization properties measurement. , 2011, Optics express.

[25]  J. Albert,et al.  Review of plasmonic fiber optic biochemical sensors: improving the limit of detection , 2015, Analytical and Bioanalytical Chemistry.

[26]  Patrice Mégret,et al.  Highly sensitive detection of molecular interactions with plasmonic optical fiber grating sensors. , 2014, Biosensors & bioelectronics.