Surface Plasmon Resonance Refractive Index Sensor Based on Tapered Coreless Optical Fiber Structure

Ding, Zhewen; Lang, Tingting; Wang, Yu; Chen, Zhao

doi:10.1109/jlt.2017.2755668

Cited by 94 publications

(20 citation statements)

References 26 publications

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“…The maximum sensitivity is S B ≈ 1000 nm/RIU, and the maximum FOM is ≈ 775 RIU −1 . These values are higher than recently reported values for similar sensors [25], [57]- [63]. Fiber optics based sensors exhibit higher sensitivity than our proposal, but present a lower FOM [64], [65].…”

Section: Plasmonic-fano Resonance Sensorcontrasting

confidence: 73%

“…Many approaches enhance performance of SPR optical sensors with bi-metals [22], buffer layers [23], and nanoparticles [24]. The integration of plasmonic sensors with optical fibers and waveguides leads to high performance systems [25] that work in both liquids and gases [26]. Moreover, other groups show integrated devices that excite surface plasmon resonances at normal incidence [27]- [32].…”

Section: Performance Improvement Of Refractometric Sensors Through Hymentioning

confidence: 99%

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Performance Improvement of Refractometric Sensors Through Hybrid Plasmonic–Fano Resonances

Elshorbagy

Cuadrado

González

et al. 2019

J. Lightwave Technol.

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In this paper, we present a plasmonic refractometric sensor that works under normal incidence; allowing its integration on a fiber tip. The sensor's material and geometry exploit the large scattering cross-section given by high-contrast of the index of refraction subwavelength dielectric gratings. Our design generates a hybrid plasmonic-Fano resonance due to the interference between the surface plasmon resonance and the grating response. We optimize the sensor with a merit function that combines the quality parameter of the resonance and the field enhancement at the interaction volume where the plasmon propagates. Our device shows a high sensitivity (1000 nm/RIU) and a high Figure of Merit (775 RIU −1 ). Degradation in performance is negligible through a wide dynamic range up to 0.7 RIU. These quantitative parameters overperform compared to similar plasmonic sensors.

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Section: Plasmonic-fano Resonance Sensorcontrasting

confidence: 73%

Section: Performance Improvement Of Refractometric Sensors Through Hymentioning

confidence: 99%

Performance Improvement of Refractometric Sensors Through Hybrid Plasmonic–Fano Resonances

Elshorbagy

Cuadrado

González

et al. 2019

J. Lightwave Technol.

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“…They have attracted extensive attention and research, and applied in many areas such as biomedicine, construction engineering, navigation, aerospace and chemistry [3]. Various types of fiber optic sensors have been developed, such as fiber Bragg grating [4][5][6], Fabry-Perot interferometers [7][8][9], sagnac interferometers [10], surface plasmon resonance [11,12], MZIs [13][14][15], and so on. Among these optical fiber sensors, optical fiber MZI sensor has unique advantages such as high sensitivity, ease of fabrication, and all-fiber structure [16].…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Side-Polished Fiber MZI and Its Sensing Performance

Zhang

Liu

et al. 2020

IEEE Sensors J.

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Abstract-A novel all-fiber Mach-Zehnder interferometer (MZI), which consists of lateral core fusion splicing of a short section of side-polished single mode fiber (SMF) between two SMFs was proposed and demonstrated. A simple fiber side-polished platform was built to control the side polished depth through a microscope. The sensitivity of the fiber MZI structure to the surrounding refractive index (RI) can be greatly improved with the increase of the side-polished depth, but has no effect on the temperature sensitivity. The sensor with a polished depth of 44.2 μm measured RI sensitivity up to -118.0 nm/RIU (RI unit) in the RI range from 1.333 to 1.387, which agrees well with simulation results by using the beam propagation method (BPM). In addition, the fiber MZI structure also can achieve simultaneous measurement of both RI and temperature. These results show its potential for use in-line fiber type sensing application.Index Terms-Fiber-optic, side-polished, Mach-Zehnder interferometer, refractive index (RI) Ping Zhang received the B.S. degree from Hefei Normal University in 2018. He is currently pursuing the M.S. degree in optical engineering with Nanchang Hangkong University. His current research interests include optical fiber sensing theory and technology.

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“…SPR biosensor is an efficient platform for biochemical sensing due to its labelfree detection principle, online measurement, ease of use, and fabrications. The integration of optical fibers with SPR sensors was a revolutionized step towards the development of miniaturized SPR sensors for selective chemical and biological sensing applications [3,4]. Side polished D-shaped fiber [5], fiber Bragg grating [6], long-period fiber grating [7] based SPR sensors were mostly used optical fiber-based SPR sensors over the past years.…”

Section: Introductionmentioning

confidence: 99%

Anomalous Sensitivity Enhancement of D-Shaped Fiber-Based Sandwiched Structure Optofluidic Sensor

et al. 2020

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A novel mechanism of sensitivity enhancement of D-shaped fiber-based surface plasmon resonance (SPR) sensors for the optofluidic device has been proposed. The sandwiched structure optofluidic platform is developed with metal-coated D-shaped fiber as the sensing device, while another thin metal layer is situated under the inner wall of the substrate as a second metal layer to construct the sandwiched microchannel. It has been found that the sensitivity of the D-type fiber SPR sensor is enhanced significantly with the sandwiched metal-coated structure of microchannel. In the proposed structure, the measurand analyte is considered as a sandwich channel layer between two thin metal layers. The sensitivity of the proposed structure is dependent on the volume of the measurand and the thickness of the metal layers. The computed sensitivity with a double metal layer and sandwich measurand layer concept is ~ 4085 nm/RIU in the region of 1.33 to 1.36. The sensitivity is enhanced by more than a factor of '2.3' in comparison with the sensitivity of the normal D-shape fiber SPR sensor. It can be enhanced further up to ~ 12,500 nm/RIU by the deposition of higher RI polymeric overlay just above the second metal layer. The computed resolution of the proposed sensor with standard interrogation technique is ~ 1x10-7 which is quite competitive within the optical fiber sensor domain. A detailed numerical analysis has been accomplished. This structure will be useful in distinct chemical and biological sensing applications where the volume of an analyte is critical. This new concept of enhancement of sensitivity with limited measurand volume will open a new designing methodology for optical fiber biosensors.

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Surface Plasmon Resonance Refractive Index Sensor Based on Tapered Coreless Optical Fiber Structure

Cited by 94 publications

References 26 publications

Performance Improvement of Refractometric Sensors Through Hybrid Plasmonic–Fano Resonances

Performance Improvement of Refractometric Sensors Through Hybrid Plasmonic–Fano Resonances

Investigation of a Side-Polished Fiber MZI and Its Sensing Performance

Anomalous Sensitivity Enhancement of D-Shaped Fiber-Based Sandwiched Structure Optofluidic Sensor

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