We propose and demonstrate hydrogen peroxide (H2O2) glucose concentration measurements using a plasmonic optical fiber sensor. The sensor utilizes tilted Bragg grating (TFBG) written in standard single mode communication fiber. is over coated with an nm-scale film of silver that supports surface plasmon resonances (SPRs). Such SPR structure provides high density narrow spectral (Q-factor about 105) overlap the broader absorption band waves film, thereby providing accurate tool to measure...

The conventional single-angle tilted fiber Bragg grating (TFBG) can only excite a certain range of cladding modes, limiting it for refractive index (RI) measurement in wide range. In this letter, we fabricate and demonstrate multi-angle TFBG, which five individual TFBGs with tilt angles ranging from 5° to 25° are sequentially inscribed along the core single mode within length 20 mm. TFBG excites continuous spectral comb narrowband-cladding modes over much wider wavelength (>170 nm) than...

Distance is a fundamental concept in spatial sciences. Spatial distance very important parameter to measure the relative positions between objects and indicate degree of similarity neighbouring objects. Indeed, plays an role many areas such as neighbourhood analysis, structural measure, image (or object) matching, clustering so on. In this paper, existing computational models for are evaluated their problems pointed out; then, Hausdorff introduced metric indicator different types This...

Trajectory prediction is one of the core functions autonomous driving. Modeling spatial-aware interactions and temporal motion patterns for observed vehicles are critical accurate trajectory prediction. Most recent works on utilize recurrent neural networks (RNNs) to model usually need convolutional (CNNs) additionally capture spatial interactions. Although Transformer, a multi-head attention-based network, has shown its notable ability in many sequence-modeling tasks (e.g., machine...

Aquaporin-2 (AQP2) has been identified as one of the most important biomarkers for nephrotic syndrome analysis. Here we propose and experimentally demonstrate a surface Plasmon resonance (SPR) reflective fiber-based biosensor label-free specific detection urinary AQP2 with high resolution. The utilizes tilted fiber Bragg grating 50 nm gold coating to excite SPR refractive indices change at surroundings. sensor works very controllable cross-sensitivities because core mode is temperature...

Low-cost wireless temperature measurement has significant value in the food industry, logistics, agriculture, portable medical equipment, intelligent health monitoring, and many areas everyday life. A passive sensor based on PCB (Printed Circuit Board) materials is reported this paper. The advantages of include simple mechanical structure, convenient processing, low-cost, easiness integration. temperature-sensitive structure a dielectric-loaded resonant cavity, consisting substrate....

We have proposed and experimentally demonstrated a plasmonic tilted fiber Bragg grating based biosensor for in-situ detection of the small biomolecule S-adenosyl-L-homocysteine (AdoHcy). The sensor can also monitor molecule's interaction with protein Set7 in real time. is made by coating 50-nm-thick gold film over an 18° grating. A spectrally dense comb backward-propagating cladding resonance modes Q-factor as high 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This paper proposes a fast algorithm to enumerate all convex subgraphs that satisfy the I/O constraints from dataflow graph (DFG) of basic block. The can be tuned determine or only those connected subgraphs. allows choice between better instruction-set extension (ISE) and faster design space exploration. uses grading method identify next node for inclusion into subgraph. If selected is included, other related nodes are included as well, thus ensuring resultant subgraph always at same time,...

We propose and experimentally demonstrate a novel electric field intensity sensor by using tilted fiber Bragg grating (TFBG) interacting with liquid crystal. The TFBG is surrounded the crystal whose effective refractive index changes over range from 1.53 to 1.70 in response strength of external fields. guiding properties cladding modes excited are, therefore, sensitive field. By monitoring amplitude selected mode resonance, we measured 1.0–4.8 kV/cm. demonstrated better than 99% linearity...

The detection of circulating tumor cells (CTCs) still faces a huge challenge partially because low abundance CTCs (1-10 cells/mL). In this work, plasmonic titled fiber Bragg grating biosensor is proposed for breast cancer cells. made by an 18° TFBG with 50 nm-thick gold nanofilm coating over the surface fiber, further immobilized specific antibody against GPR30, which membrane receptor expressed in many cancers, serving as bait. vitro tests have confirmed that can detect concentration 5...

An aluminum nitride (AlN) based patch antenna-type high-temperature wireless passive sensor is reported to operate as both a and an antenna, which integrates in situ measurement/sensing with remote communication at the same time. The small, easy manufacture, highly sensitive has high operating temperature; it can be used high-temperature, chemically corrosive other harsh environments. sensing mechanism of sensor, dielectric constant AlN ceramic substrate, increases rising temperature,...

This paper presents an automatic road extraction technique that combines information from aerial photos and laser scanning data (LSD). innovative Road Extraction Assisted by Laser (REAL) can detect the edges shadowed surrounding high objects. A new concept of Associated Line (ARL) graph LSD is introduced to enhance Real (RRL) photos. The process consists three steps: first step analysing images where parameters such as height objects are obtained. Secondly, digital analysed detected. It...

A nano-scale gold-coated tilted fiber Bragg grating sensor with clear surface plasmon resonance is proposed and experimentally demonstrated. The transmission spectrum of the provides a fine comb narrowband resonances that overlap broader absorption thus unique tool to measure small shifts identify changes surrounding refractive index (SRI) high accuracy. Meanwhile, our an amplitude interrogation method for SRI measurement, which much simpler cost-effective than traditional wavelength...

In the paper based on surface plasmon resonance (SPR) in a tilted fiber Bragg grating (TFBG), novel algorithm is proposed, which facilitates demodulation of surrounding refractive index (SRI) via cladding mode interrogation and accelerates calibration measurement SRI. Refractive indices with tiny step 2.2 × 10-5 are prepared by dilution glucose aqueous solution for test this sensor probe. To accelerate process, automatic selection most sensitive demonstrated. First, peaks transmitted...

Tilted fiber Bragg grating, which has the advantages of both grating and long-period been widely studied for sensing in many fields, especially field biochemistry. Calmodulin, a wide distribution eukaryotes, can regulate several enzymes such as adenylate cyclase guanylate mediates cellular processes cell proliferation cyclic nucleotide metabolism. The abnormal levels calmodulin body will result serious effects from metabolism to nerve growth memory. Therefore, it is important measure...

In this paper, we proposed an in-fiber Mach-Zehnder temperature sensor based on a dual-core fiber (DCF) in which one core, working as the sensing arm, is suspended embedded fluidic channel filled with silicone oil, while other one, reference locates eccentrically DCF. Temperature variations would change refractive index of oil infiltrated well effective guided mode thus shifting interference spectra. Both experiments and numerical simulations were carried out to characterize sensor. The...

Diabetes mellitus is a common chronic disease, which requires continuous monitoring of blood glucose levels in patients during treatment. In this work, we propose and experimentally demonstrate sensor with low limit detection (LOD) wide measured range. The made by plasmonic tilted fiber grating graphene oxide (GO) layer coated over the metallic surface, together pyrene-1-boric acid immobilized on GO serving as bio-detectors for specific glucose. Experimental results show that LOD our can...

To the Editor: Injuries are an important yet neglected cause of health burden, and millions injury-related deaths that occur each year reflect large disparities in terms gender, race, socioeconomic status.[1] With progress urbanization number motor vehicles increasing, pedestrians, cyclists, drivers brought into close contact, increasing risk for all.[2] In 2019, one leading causes disability-adjusted life-years (DALYs) all ages was road injuries (ranked seventh).[1] Understanding burden...

With the continuous advancement of deep learning technology, researchers have made further progress in hyperspectral image (HSI) classification domain. We propose a double-branch multi-scale residual network (DBMSRN) framework for HSI to improve accuracy and reduce number required training samples. The DBMSRN consists two branches designed extract spectral spatial features from HSI. Thus, obtain more comprehensive feature information, we extracted additional local global at different scales...

We propose and experimentally demonstrate a compact fiber-optic vibration sensor in which tilted Bragg grating is inscribed the core of depressed cladding fiber. The provides resolution up to 2×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> m/s xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> linear acceleration response between 0.2 6.0 , together with flat frequency 1 120 Hz. takes advantage cost-effective interrogation scheme by...

In this article, a method for solving cable layout optimization problems in electronic systems based on ensemble learning (EL) and improved differential evolution (DE) algorithm is proposed. Using method, we produced two schemes with the considerations of electromagnetic compatibility performance total length cables. First, several different individual machine (ML) models all output variables were established. On basis, established EL better than previous ML models. Then, aiming at problem...