Manufacture of robust surface plasmon resonance fiber optic based dip-probes

Surface plasmon resonance sensors based on uniform-waist tapered fibers in a reflective configuration

“…4 -6 Another option is chemical etching with hydrofluoric acid (HF) to eliminate fiber cladding. 7,8 The mechanical strip of the fiber cladding has also been used. 8 However, these methods only provide access to a relatively small intensity of the evanescent field, and some of these options increase the fragility of the fiber.…”

“…7,8 The mechanical strip of the fiber cladding has also been used. 8 However, these methods only provide access to a relatively small intensity of the evanescent field, and some of these options increase the fragility of the fiber. Recently, tapered fiber have shown their potential since the evanescent field intensity is higher than in the previous configurations.…”

“…For overcoming this feature, some retroreflective SPR devices have been proposed, some of them based on geometric considerations when tapering the fiber 16,17 and others based on reflective elements added after the transducer. 8 These devices require complex apparatuses and techniques for their construction when a reproducible batch of sensors is to be produced, their main advantage being the small size, which makes them suitable for integration in microwell plates 16 and in vivo measurements. 17 However, the small size of SPR sensors can also negatively affect their sensitivity, since in tapered fiber-based SPR sensors, this sensitivity is directly related to the interaction length.…”

A Gold-Deposited Surface Plasmon Resonance-based Optical Fiber Sensor System Using Various Light-Emitting Diodes

“…[1][2][3] Gold (Au) and silver (Ag) are the most widely used metals for the sensor elements and the sensor properties depend on the dielectric constant (εr + εii) of the deposited metal. [4][5][6][7] Sensor systems which scan the wavelength [8][9][10][11][12][13][14][15][16][17] or change the angle of incident light [18][19][20][21][22][23][24][25][26][27][28] have been proposed. Though other types of sensor system based on SPR do not require a change in the incident angle, they do need many optical parts for their construction.…”

Sensor Properties and Surface Characterization of Silver-deposited SPR Optical Fibers

“…[1][2][3] Sensor systems which scan the wavelength [8][9][10][11][12][13][14][15][16][17] or change the angle of incident light [18][19][20][21][22][23][24][25][26][27][28] have been proposed. Though another type of sensor system based on SPR does not need a change in the incident angle, it needs many optical parts for its construction.…”