Ultrahigh sensitivity polarimetric strain sensor based upon D-shaped optical fiber and surface plasmon resonance technology

Lo, Yu-Lung; Chuang, Chin-Ho; Lin, Zheng-Wei

doi:10.1364/ol.36.002489

Cited by 45 publications

(14 citation statements)

References 14 publications

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“…In this work, we demonstrate that the addition of a 50 nm gold coating deposited around the TFBG outer surface enhances the axial strain sensitivity of the cladding mode that is coupled to the Plasmon wave. Unlike neighboring cladding modes, the axial strain sensitivity of the SPR mode is 4 % higher than the one of the Bragg wavelength, under the polarization mode P. We also show that the behavior is completely opposite for the polarization mode S. These preliminary results are amenable for the realization of highly sensitive polarimetric axial strain sensor, as reported in [12] for D-shaped optical fiber. …”

Section: Introductionsupporting

confidence: 57%

Enhanced axial strain sensitivity in plasmonic tilted fiber Bragg gratings sensors

et al. 2012

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This paper experimentally analyses the axial strain sensitivity of gold-coated tilted fiber Bragg gratings immersed in liquid. For the polarization mode P (polarization parallel to the tilt plane), a strong attenuation of some cladding mode resonances appears in the transmitted spectrum due to the coupling with the Plasmon wave. When axially straining the grating, we report a unique behavior for the cladding mode resonance that presents the strongest attenuation. It presents an axial strain sensitivity (1.33 pm/µε) higher than the Bragg wavelength (1.28 pm/µε) and much higher than neighboring cladding modes (1.16 to 1.22 pm/με), meaning that differential strain measurements can be achieved with such a sensing platform.

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Section: Introductionsupporting

confidence: 57%

Enhanced axial strain sensitivity in plasmonic tilted fiber Bragg gratings sensors

et al. 2012

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“…Practically, this is achieved either by polishing or etching the cladding so as to expose the evanescent wave to the surrounding medium or by using in-fiber gratings (refractive index modulations imprinted in the fiber core along the propagation axis). Hence, various architectures coexist: etched multimode optical fibers [2,3], side-polished optical fibers [4], D-type optical fibers [5,6], tapered optical fibers [7], U-shaped optical fibers [8], long period fiber gratings (LPFGs) [9] and tilted fiber Bragg gratings (TFBGs) [10]. Configurations based on cladding removal/decrease are the most straightforward to realize.…”

Section: Introductionmentioning

confidence: 99%

Near-infrared grating-assisted SPR optical fiber sensors: design rules for ultimate refractometric sensitivity

Caucheteur¹,

Voisin²,

Albert³

2015

Opt. Express

120

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Plasmonic optical fiber sensors are continuously developed for (bio)chemical sensing purposes. Recently, surface plasmon resonance (SPR) generation was achieved in gold-coated tilted fiber Bragg gratings (TFBGs). These sensors probe the surrounding medium with near-infrared narrowband resonances, which enhances both the penetration depth of the evanescent field in the external medium and the wavelength resolution of the interrogation. They constitute a unique configuration to probe all the fiber cladding modes individually. We use them to analyze the modal distribution of gold-coated telecommunication-grade optical fibers immersed in aqueous solutions. Theoretical investigations with a finite-difference complex mode solver are confirmed by experimental data obtained on TFBGs. We show that the refractometric sensitivity varies with the mode order and that the global SPR envelope shift in response to surrounding refractive index (SRI) changes higher than 1e-2 RIU (refractive index unit) can be ~25% bigger than the local SPR mode shift arising from SRI changes limited to 1e-4 RIU. We bring clear evidence that the optimum gold thickness for SPR generation lies in the range between 50 and 70 nm while a cladding diameter decrease from 125 µm to 80 µm enhances the refractometric sensitivity by ~20%. Finally, we demonstrate that the ultimate refractometric sensitivity of cladding modes is ~550 nm/RIU when they are probed by gold-coated TFBGs.

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“…In the past years, many SPR-based optical fiber sensing structures have been proposed, such as D-shaped fiber type, tapered fiber type, TFBG type, photonic crystal fiber (PCF) type, etc. [ 9 , 10 , 11 , 12 ]. The condition for realizing SPR fiber sensing is to meet the phase matching condition, which is, the real part of the effective refractive index of the SPP mode and the waveguide mode are equal in value at a certain wavelength [ 13 ].…”

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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Ultrahigh sensitivity polarimetric strain sensor based upon D-shaped optical fiber and surface plasmon resonance technology

Cited by 45 publications

References 14 publications

Enhanced axial strain sensitivity in plasmonic tilted fiber Bragg gratings sensors

Enhanced axial strain sensitivity in plasmonic tilted fiber Bragg gratings sensors

Near-infrared grating-assisted SPR optical fiber sensors: design rules for ultimate refractometric sensitivity

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

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