Replicating human somatosensory networks in robots is crucial for dexterous manipulation, ensuring the appropriate grasping force objects of varying softness and textures. Despite advances artificial haptic sensing object recognition, accurately quantifying perceptions to discern texture remains challenging. Here, we report a methodology that uses bimodal sensor capture multidimensional static dynamic stimuli, allowing simultaneous quantification features. This method demonstrates...

Optical microfiber taper has unique propagation properties, which provides versatile waveguide structure to design the tunable photonic devices. In this paper, S-tapered is fabricated by using simple fusion spicing. The spectral characteristics of integrated with ferrofluid under different magnetic-field intensities have been theoretically analyzed and experimentally demonstrated. spectrum are both found become highly magnetic-field-dependent. results indicate transmission wavelength dips...

A highly sensitive optical fiber twist sensor has been proposed by employing a Sagnac interferometer based on polarization-maintaining elliptical core fibers (PM-ECFs). The effects have theoretically analyzed and experimentally demonstrated. Based the photoelastic effect, resonance wavelength linearly shifts with increment of shift is also dependent torsion direction. maximum sensitivities reach 18.60nm/(rad/m) for clockwise (CW) direction 15.83nm/(rad/m) anticlockwise (ACW) direction,...

Remote sensing ship recognition technology is one of the important research areas for achieving ocean security monitoring. However, maritime targets features such as multi-scale, arbitrary direction, and dense arrangement, their imaging often influenced by factors sea fog surface background. It challenging fast accurate detection remote ships. We propose a new algorithm YOLO-Remote Sensing Ship Detection (YOLO-RSSD) based on YOLOv5, which effectively improves accuracy while ensuring speed....

An all-fiber twist sensor based on multimode interferometer (MMI) has been proposed and fabricated by splicing both ends of a section square no-core fiber (NCF) with single mode fiber. We have investigated the transmission spectral characteristics under different applied twisting angles. Within torsion angle range -360°~360°, wavelength sensitivities are 1.28615 nm/(rad × m(-1)) 0.11863%/ (rad m(-1)), respectively. Moreover due to trivial thermal expansion coefficient pure silica fiber, low...

An improved deep neural network incorporating attention mechanism and DSSIM loss function (AM_U_Net) is used to recover input images with speckles transmitted through a multimode fiber (MMF). The trained on relatively small dataset demonstrates an optimal reconstruction ability generalization ability. Furthermore, bimodal fusion method developed based S polarization P speckles, greatly improving the recognition accuracy. These findings prove that AM_U_Net has remarkable capabilities for...

A two-dimensional (2D) magnetic field vector sensor is proposed and experimentally demonstrated. theoretical model established to analyze the physical mechanism in detail. The transmission response of depends on angle (θ) between orientation polarization direction tilted fiber Bragg grating (TFBG) intensity (H) when keeping θ constant exhibits a sinuous behavior H constant. When -θ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> <; π - +...

A fiber-optic magnetic field sensor based on the thin-core modal interference and fluid (MF) has been proposed experimentally demonstrated. The is spliced with a fiber (TCF) between two conventional single-mode fibers immersed into MF. transmission spectra of under different intensities have measured theoretically analyzed. results show that sensitivity reaches up to −0.058 dB/Oe linear range from 75 Oe 300 Oe. Due small thermal expansion TCF material, attenuation wavelength power remain...

Ahighly sensitive refractive index (RI) biosensor based on three-layers air-holes photonic crystal fiber (PCF) with gold film the outer edge of cladding is proposed. The properties modes coupling between fundamental mode (odd mode), (even mode) and surface plasmon polaritons (SPPs) were theoretically simulated, respectively. Meanwhile, effects thickness air-hole diameter sensor performance are analyzed in detail. When energy odd even couple strongest to SPP 50 nm, maximum sensitivities this...

A magnetic field sensor based on an asymmetrical fiber modal Mach–Zehnder interferometer (MMZI) is achieved by cascading tapered with the core-offset structure. The MMZI sealed fluid and its spectral dependence has been investigated. results show that transmission variations of two dips are about 8 dB 10 for a intensity range from 0 Oe to 400 Oe, respectively. highest sensitivity reaches 0.03407 Oe−1. proposed demodulation cost-effective robust; therefore, device beneficial sensing...

A fiber-optical sensor is proposed for dual-direction magnetic field measurement by cascading an optical microfiber with a core-offset section. Due to the relative direction difference between and fiber axis, refractive index of fluid could be tuned accordingly. The transmission spectral characteristics change variation applied field. Experimental results show that different directions turn out linear responses. When perpendicular or parallel sensitivities are −0.02534 0.01111 dB/Oe,...

A compact fiber-optic magnetic-field sensor based on tapered all-solid waveguide-array fiber (WAF) and magnetic fluid (MF) has been proposed experimentally demonstrated. The WAF is fabricated by using a fusion splicer, the formed immersing into MF. transmission spectra have measured analyzed under different intensities. Experimental results show that acquired sensitivity 44.57 pm/Oe for linear intensity range from 50 to 200 Oe. All-solid very similar thermal expansion coefficient high-...

A compact and ultra-sensitive magnetic field sensor has been proposed by exploiting a microfiber-assisted Mach-Zehnder interferometer functionalized fluids. We have experimentally investigated the transmission spectral responses of to variation applied intensity environmental temperature. The interference dips exhibit sensitivity as large −1.193 nm/Oe for low range 3 Oe 21 Oe. By using sensing matrix containing well temperature sensitivities different dips, cross-sensitivity issue could be...

To address the challenge of meningioma grading, this study aims to investigate potential value peritumoral edema (PTE) regions and proposes a unique approach that integrates radiomics deep learning techniques.

A magnetic-field-tuned photonics device based on magnetic fluid (MF) and a square tapered no-core fiber (NCF) sandwiched between two single-mode fibers (SMFs) has been demonstrated experimentally theoretically. The enhanced evanescent field effect in the NCF is achieved by tapering utilizing fusion splicer. spectral dependence of proposed applied magnetic-field intensity investigated. results indicate that multimode interference spectrum exhibits blue-shift with increment intensity. maximal...

A thin-core-fiber-based (TCF-based) dual S-tapered fiber sensor for label-free DNA hybridization detection has been proposed and experimentally demonstrated. The biosensor is constructed by splicing a TCF of about 645 μm in length with two segments single-mode fibers, the S-tapers are fabricated at joints using commercial fusion splicer. By functionalizing surface monolayer poly-L-lysine single-stranded (ssDNA) probes, target ssDNA achieved. functionalization processes 1 nM monitored through...

An inline optical fiber magnetic field sensor based on hollow core (HCF) wall integrated with fluid tuned by was proposed sandwiching a length of HCF between two single mode fibers offset joints. Intermodal interference is present in the wall, propagation, as well distribution within have been simulated, and contrast ratio fringes response to variation applied has theoretically analyzed experimentally observed. The maximum sensing sensitivity -0.02173 dB/Oe linear intensity range from 150...

A multimode interferometer (MMI) for the measurement of a magnetic field based on concatenated S-tapered fibers is proposed and experimentally demonstrated. Spectrally interrogated sensing achieved by integrating MMI with fluids. The sensitivity reaches 0.011 dB Oe−1. Owing to its desirable advantages such as compactness, low cost, fast response flexible structure, anticipated find potential applications in situ measurements field.

Due to the occurrence of redundant speckle, multimode fiber (MMF) imaging is extremely challenging. Our work studies relationship between effective feature distribution speckle field and local spatial position area, proves that information highly redundant. The refers phase amplitude optical carrying image point co-exciting very due mode dispersion, interference, coupling, entrained noise through transmission. neural network Swin-Unet can well learn association global features, greatly...

The temperature dependence of refractive indices for nematic liquid crystal (NLC) is characterized in the near-infrared region by employing an all-fiber ultrasensitive microfiber-assisted Mach-Zehnder interferometer (MAMZI). Owing to unique thermal-optic properties NLC, proposed MZI shows inverse sensitivities -7.311 and 77 nm/K right above below clearing E7, respectively. Furthermore, dependences ordinary extraordinary could be acquired performing curve fitting on experimentally measured...