Excessively tilted fiber grating-based vector magnetometer

Lu, Tean; Sun, Yuezhen; Moreno, Yarien; Sun, Qizhen; Zhou, Kaiming; Wang, Hushan; Yan, Zhijun; Liu, Deming; Zhang, Lin

doi:10.1364/ol.44.002494

Cited by 33 publications

(16 citation statements)

References 24 publications

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“…In 2018, based on a similar mechanism, magnetic-vector sensing was achieved by Layeghi et al, who used a tapered Hi-Bi fiber inserted in a fiber loop mirror [24]. In 2019, Cui et al [25] and Lu et al [26] respectively proposed using a single-mode-fiber fused with capillary structure and an excessively tilted fiber grating to realize the sensing to the magnetic vector. Note that in the above cases, the used fibers still remained in a cylindrically symmetric structure.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Nanoparticles Functionalized Few-Mode-Fiber-Based Plasmonic Vector Magnetometer

et al. 2019

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In this work, we demonstrate a highly-sensitive vector magnetometer based on a few-mode-fiber-based surface plasmon resonance (SPR) sensor functionalized by magnetic nanoparticles (MNPs) in liquid. To fabricate the sensor, a few-mode fiber is side-polished and coated with a gold film, forming an SPR sensor that is highly sensitive to the surrounding refractive index. The vector magnetometer operates based on the mechanism whereby the intensity and orientation of an external magnetic field alters the anisotropic aggregation of the MNPs and thus the refractive index around the fiber SPR device. This, in turn, shifts the resonance wavelength of the surface plasmon. Experimental results show the proposed sensor is very sensitive to magnetic-field intensity and orientation (0.692 nm/Oe and −11.917 nm/°, respectively). These remarkable sensitivities to both magnetic-field intensity and orientation mean that the proposed sensor can be used in applications to detect weak magnetic-field vectors.

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Section: Introductionmentioning

confidence: 99%

Magnetic Nanoparticles Functionalized Few-Mode-Fiber-Based Plasmonic Vector Magnetometer

et al. 2019

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“…Due to the tilted grating plane, TFGs could couple forward propagating core mode into polarization dependent forward/backward propagating cladding modes. So far, TFGs have been reported as various biochemical sensors [27][28][29][30][31][32][33] and physical sensors [19][20][21][34][35]. The relationship between resonance wavelength of cladding modes and surrounding refractive index (SRI) could be determined by phase match condition (PMC) of TFGs:…”

Section: B Cladding Mode Field Distributionsmentioning

confidence: 99%

“…In 2016, Yan et al have theoretically and experimentally investigated the dual-peak feature of Ex-TFG and its temperature and RI sensitivity characteristics [17][18], and the polarization-related coupling property has promoted Ex-TFGs to be applied as twisting [19] and transverse loading sensors [20]. In our previous work [21], we proposed and demonstrated a compact vector magnetometer based on the Ex-TFG assistant with magnetic fluid. However, there are not any papers to systematically explain the mechanism of how TFGs could be used for vector sensing.…”

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confidence: 99%

Theoretical and Experimental Analysis of the Directional RI Sensing Property of Tilted Fiber Grating

Sun

Moreno

et al. 2021

J. Lightwave Technol.

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In this paper, we have theoretically and experimentally investigated the unique vector refractive index (RI) sensing property of tilted fiber grating (TFG). Due to the orthogonal symmetric grating structure, TFGs would mainly achieve the coupling between the fiber core mode and the two orthogonal polarization LP1m of cladding mode. And the numerical simulation results showed that the coupling coefficient between fundamental core mode to the LP1m cladding mode is higher than the others. In the experiment, we have furthermore observed the cladding mode field distribution of excessively TFG (Ex-TFG) and long period fiber grating (LPFG), which indicated that the evanescent field distribution of cladding mode of TFG shows an asymmetric near field distribution with two lobes oriented along the fast axis of TFG, and the one of LPFG has a circularly symmetric cladding mode field distribution. In addition, by employing side-immersion method, we have measured the azimuth RI sensitivities of Ex-TFG, tilted fiber Bragg grating (TFBG) and LPFG, which exhibited that both Ex-TFG and TFBG have shown a direction-dependency RI sensitivity, and the RI sensitivity with side-immersion along fast axis is almost half of the one along slow axis, and the RI sensitivity of LPFG is azimuth independent. Overall, the experiment results show that the TFGs inherently show unique directional RI sensing property, which could be potentially applied in vector sensing area.

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“…Based on the direction-dependency RI response discussed previously, Lu et al have proposed an Ex-TFG based vector magnetometer [46], for which the Ex-TFG is packaged within a magnetic fluid (MF) with highly dispersed ferromagnetic particle. Under the magnetic field, the random distribution of ferromagnetic particles becomes oriented along the magnetic field and forms magnetic chain clusters.…”

Section: ) Vector Magnetometermentioning

confidence: 99%

Excessively Tilted Fiber Grating Sensors

Sun

Yan

Zhou

et al. 2021

J. Lightwave Technol.

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The development of excessively tilted fiber gratings (Ex-TFGs) provides a new type of sensing device with high refractive index (RI) sensitivity, low thermal crosstalk and vector sensing property. Due to the asymmetric grating structure of Ex-TFG, the light in the core is coupled into high order forwardpropagating cladding modes and split into two orthogonal polarization states, resulting in dual-peak resonances in the transmission spectrum. The Ex-TFG also exhibits a non-circularly symmetrical near field distribution, which endows an exceptional orientation sensing capability. Benefitting from the unique mode coupling behavior, Ex-TFGs have been studied and developed for many different sensing applications, such as polarization dependent torsion and loading sensors, vector accelerometer and magnetometer, and a variety of low thermal crosstalk bio/chemical sensors.This paper will review the recent study and development of Ex-TFGs in terms of mode coupling mechanism, fabrication method, transmission and sensor characteristics and the novel applications in sensing areas.

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Excessively tilted fiber grating-based vector magnetometer

Cited by 33 publications

References 24 publications

Magnetic Nanoparticles Functionalized Few-Mode-Fiber-Based Plasmonic Vector Magnetometer

Magnetic Nanoparticles Functionalized Few-Mode-Fiber-Based Plasmonic Vector Magnetometer

Theoretical and Experimental Analysis of the Directional RI Sensing Property of Tilted Fiber Grating

Excessively Tilted Fiber Grating Sensors

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