Surface Plasmon Resonance Sensor Based on Dual-Side Polished Microstructured Optical Fiber with Dual-Core

Han, Haixia; Hou, Donglian; Luan, Nannan; Bai, Zhenxu; Song, Li; Liu, Jianfei; Hu, Yong‐Sheng

doi:10.3390/s20143911

Cited by 35 publications

(23 citation statements)

References 48 publications

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“…Along this line, several configurations have been exploited in literature, like the ones based on Dshaped fibers [14][15][16][17], tapered fibers [18][19][20][21], U-bent fibers [22,23], and many others [24][25][26]. In the last years, in order to improve the performances of SPR sensors based on optical fiber, several measures have been adopted, like, for instance, by using ultra-thin films graphene-based, that have led to excellent results [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Flexible and Ultrathin Metal-Oxide Films for Multiresonance-Based Sensors in Plastic Optical Fibers

Cennamo

Arcadio

Noel

et al. 2021

ACS Appl. Nano Mater.

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We have exploited a laser-based integration process of ultra-thin Metal-Oxide (MO) films in order to improve the plasmonic effect in sensors based on D-shaped Plastic Optical Fibers (POFs). More specifically, by using ultra-thin MO films, the performances of the Surface Plasmon Resonance (SPR) phenomenon improve and a Lossy Mode Resonance (LMR) can occur. Although the role of this kind of materials has been already presented, when they are deposited as overlayer (upside the thin metal film), we have used a different approach by depositing MOs, specially Zirconium Oxide (ZrO 2 ) and Titanium Oxide (TiO 2 ), as flexible intermediate layers between the exposed core of POFs and the gold film. The MO layer is prepared from sol-gel solution and Deep-UV laser curing allows to densify the thin film and tune the refractive index, with a room temperature process fully compatible with the flexible polymer substrates. In a preliminary step, we have carried out numerical results, based on transfer matrix formalism, in order to predict the SPR response. Subsequently, we have experimentally characterized the developed sensor configurations. Numerical and experimental results have shown above all an enhancement of the sensor performances, in terms of SPR sensitivity, with respect to a reference sensor based on a polymer instead of MOs. Moreover, in some proposed sensor configurations, together with the SPR phenomenon, an LMR phenomenon was observed. It occured in a different wavelength range, for a typical refractive index range present when considering receptors for biochemical sensing applications. Therefore, both resonances (SPR and LMR) could be used in several application fields.

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Section: Introductionmentioning

confidence: 99%

Flexible and Ultrathin Metal-Oxide Films for Multiresonance-Based Sensors in Plastic Optical Fibers

Cennamo

Arcadio

Noel

et al. 2021

ACS Appl. Nano Mater.

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“…In order to excite the surface plasma wave, the p-polarized light energy has to be entered into the metal film in the form of an evanescent wave. To date, many types of fiber-based SPR sensors have been proposed, which are designed to generate the evanescent wave, for example, the tapering fiber-based SPR sensors [ 7 ], the side-polishing fiber-based SPR sensors [ 8 ], the tip-polishing fiber-based SPR sensors [ 9 ], the hetero-core fiber-based SPR sensors [ 10 ], the tilted fiber Bragg grating-based SPR sensors [ 11 ], the long-period fiber grating-based SPR sensors [ 12 ], and so on. Different kinds of optical fibers were also employed to design the SPR sensors, including the single-mode fibers, the multimode fibers, the microstructure fibers, and so on.…”

Section: Introductionmentioning

confidence: 99%

An Enhanced Plastic Optical Fiber-Based Surface Plasmon Resonance Sensor with a Double-Sided Polished Structure

Liu

Deng

Zheng

et al. 2021

Sensors

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An enhanced plastic optical fiber (POF)-based surface plasmon resonance (SPR) sensor is proposed by employing a double-sided polished structure. The sensor is fabricated by polishing two sides of the POF symmetrically along with the fiber axis, and a layer of Au film is deposited on each side of the polished region. The SPR can be excited on both polished surfaces with Au film coating, and the number of light reflections will be increased by using this structure. The simulation and experimental results show that the proposed sensor has an enhanced SPR effect. The visibility and full width at half maximum (FWHM) of spectrum can be improved for the high measured refractive index (RI). A sensitivity of 4284.8 nm/RIU is obtained for the double-sided POF-based SPR sensor when the measured liquid RI is 1.42. The proposed SPR sensor is easy fabrication and low cost, which can provide a larger measurement range and action area to the measured samples, and it has potential application prospects in the oil industry and biochemical sensing fields.

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“…The central air hole is plated with metal on the inner wall, filled with magnetic fluid, and used as a sensing channel for exciting SPR. The dual-core PCFs and their mode coupling properties were widely investigated [ 23 ]. The dual-core design can effectively enhance the evanescent field, which makes it easier to stimulate SPR.…”

Section: Introductionmentioning

confidence: 99%

A Highly Magnetic Field Sensitive Photonic Crystal Fiber Based on Surface Plasmon Resonance

Huang

Zhang

et al. 2020

Sensors

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A novel magnetic field sensor comprising a photonic crystal fiber (PCF) is designed and investigated based on surface plasmon resonance (SPR). We use finite element analysis in order to analyze the sensing characteristics of the magnetic field sensor. The simulation results show that the sensor is very sensitive to the change of refractive index and has good linearity in the refractive index range from 1.43–1.45. The thickness of the metal film and the metal material has great influence on the resonance wavelength and the peak of the loss spectrum, the diameter of the central air hole will affect SPP excitation. When the thickness of gold layer is 50 nm, the refractive index sensitivity is 4125 nm/RIU in the refractive index range from 1.43–1.45. Using the designed sensor for magnetic field sensing, the loss spectrum is red-shifted with the increase of the magnetic field, the highest magnetic field sensitivity can reach 61.25 pm/Oe in the range from 50 Oe to 130 Oe. The sensor not only has high sensitivity of refractive index, but it can also realize accurate measurement of magnetic field. It has huge application potential in complex environment, remote sensing, real-time monitoring, and other fields.

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Surface Plasmon Resonance Sensor Based on Dual-Side Polished Microstructured Optical Fiber with Dual-Core

Cited by 35 publications

References 48 publications

Flexible and Ultrathin Metal-Oxide Films for Multiresonance-Based Sensors in Plastic Optical Fibers

Flexible and Ultrathin Metal-Oxide Films for Multiresonance-Based Sensors in Plastic Optical Fibers

An Enhanced Plastic Optical Fiber-Based Surface Plasmon Resonance Sensor with a Double-Sided Polished Structure

A Highly Magnetic Field Sensitive Photonic Crystal Fiber Based on Surface Plasmon Resonance

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