Hollow fiber surface plasmon resonance sensor for the detection of liquid with high refractive index

Abstract

A new kind of surface plasmon resonance (SPR) sensor based on silver-coated hollow fiber (HF) structure for the detection of liquids with high refractive index (RI) is presented. Liquid sensed medium with high RI is filled in the hollow core of the HF and its RI can be detected by measuring the transmission spectra of the HF SPR sensor. The designed sensors with different silver thicknesses are fabricated and the transmission spectra for filled liquids with different RI are measured to investigate the performances of the sensors. Theoretical analysis is also carried out to evaluate the performance. The simulation results agree well with the experimental results. Factors that might affect sensitivity and detection accuracy of the sensor are discussed. The highest sensitivity achieved is 6,607 nm/RIU, which is comparable to the sensitivities of the other reported fiber SPR sensors.

Analysis of Hollow Fiber Temperature Sensor Filled with Graphene-Ag Composite Nanowire and Liquid

“…The nanowire and the liquid are filled into the fiber core and eventually the nanowire sinks to the bottom of the inner surface because of gravity effects. The filling process should be easy to operate because the holes of the HFs are available over a relatively wide range of diameter, from several hundred microns to several millimeters or more [8,15]. Graphene’s good features as high electron density of hexagonal rings, high surface to volume ratio, broadband optical and plasmonic properties make it an appropriate candidate to be used as a functional coating material for existing plasmonic devices.…”

“…Recently, various kinds of sensors based on PCF have been reported. They are used to measure factors such as temperature [4], strain [5], vibration [6], twist [7], refractive index (RI) [8], gas absorption [9], magnetic field [10] and so on, which are widely applied in chemical, physical and biochemical sensing fields.…”

Temperature Sensor Based on Photonic Crystal Fiber Filled With Liquid and Silver Nanowires

“…Additionally, the existence of air holes provides the possibility to insert functional materials [3], which can realize the interaction of transmission light and materials effectively. Recently, a large variety of PCF based sensors are reported to measure temperature [4]- [8], strain [9], vibration [10], twist [11], refractive index (RI) [12], [13], gas absorption [14], magnetic field [15], and so on, which have been widely used in physical, chemical, and biochemical sensing applications.…”

“…SPR technique owns extraordinary properties like label free, real-time and high resolutions down to 10 À7 RI units (RIUs) [16], which is not accessible to other sensing methods. Combining the advantages of PCF and SPR, many sensing devices have been very recently reported [12], [13], [17]- [19]. Hassani et al first designed a RI sensor and realize the detectable RI change of 10 À4 [17].…”

The influence of temperature to a refractive index sensor based on a macro-bending tapered plastic optical fiber

“…A wide range of optical fiber RI sensors have been reported [1][2][3][4][5][6][7][8], and mostly composed of single-mode glass optical fibers (GOFs), which require complex processing of fibers and expensive experimental equipment. Several researchers have investigated the performance of plastic optical fibers (POFs) as an alternative to GOFs.…”