A5100456465- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Advanced Photonic Communication Systems
- Semiconductor Lasers and Optical Devices
- Analytical Chemistry and Sensors
- Photonic Crystal and Fiber Optics
- Mechanical and Optical Resonators
- Orbital Angular Momentum in Optics
- Cooperative Communication and Network Coding
- Advanced Memory and Neural Computing
- Quantum optics and atomic interactions
- Full-Duplex Wireless Communications
- PAPR reduction in OFDM
- Biosensors and Analytical Detection
- Power Systems and Renewable Energy
- Laser-induced spectroscopy and plasma
- Neuroscience and Neural Engineering
- Microstructure and Mechanical Properties of Steels
- Seismic Waves and Analysis
- Optical Wireless Communication Technologies
- Optical Coherence Tomography Applications
- Advanced Optical Sensing Technologies
- Electric Power System Optimization
Huazhong University of Science and Technology
2013-2025
Shijiazhuang Tiedao University
2024
Wuhan National Laboratory for Optoelectronics
2019-2024
Nanjing University of Aeronautics and Astronautics
2024
Shenyang Institute of Engineering
2024
Wuhan University of Technology
2023
Zhejiang University
2021-2023
Kunming University
2023
Zhejiang University-University of Edinburgh Institute
2023
Institute of Advanced Manufacturing Technology
2022
Abstract Imaging flow cytometry (IFC) combines the imaging capabilities of microscopy with high throughput cytometry, offering a promising solution for high-precision and high-throughput cell analysis in fields such as biomedicine, green energy, environmental monitoring. However, due to limitations framerate real-time data processing, existing IFC systems has been restricted approximately 1000-10,000 events per second (eps), which is insufficient large-scale analysis. In this work, we...
We experimentally demonstrate the use of artificial neural network (ANN) to process sensing signals obtained from Brillouin optical time domain analyzer (BOTDA). The distributed temperature information is extracted directly local gain spectra (BGSs) along fiber under test without determination frequency shift (BFS) and hence conversion BFS temperature. Unlike our previous work for short distance where ANN trained by measured BGSs, here we employ ideal BGSs with different linewidths train in...
We have proposed and demonstrated a novel flexible optical fiber Fabry-Perot interferometer (FPI) based vibration sensor with broadband frequency response. The consists of FP cavity formed by soft splicing using polydimethylsiloxane (PDMS) material low Young's Modulus compact cantilever moment inertia as the receiver. Acoustic or mechanical waves experienced can result in obvious change FPI length finally be transduced to intensity variation signal, which makes highly sensitive external...
Brillouin optical time-domain analyzer (BOTDA) assisted by support vector machine (SVM) for ultrafast temperature extraction is proposed and experimentally demonstrated. The treated as a supervised classification problem the gain spectrum (BGS) classified into each class according to vectors hyperplane of SVM model after training. Ideal pseudo-Voigt curve-based BGS used train get hyperplane. performance investigated in both simulation experiment under various conditions collection. Both...
We have experimentally analyzed and compared the performance of Brillouin optical time-domain analyzer (BOTDA) sensors assisted by non-local means (NLM) wavelet denoising (WD) techniques in terms measurement accuracy experimental spatial resolution, respectively. Degradation resolution after NLM WD are observed, which originate from fact that higher signal-to-noise ratio (SNR) improvement is achieved at expense sacrificing details BOTDA data, smaller data sampling point number (SPN) gives...
Simultaneous temperature and strain measurement with enhanced accuracy by using Deep Neural Networks (DNN) assisted Brillouin optical time domain analyzer (BOTDA) has been demonstrated. After trained combined ideal clean noisy BGSs, the DNN is applied to extract both directly from measured double-peak BGS in large-effective-area fiber (LEAF). Both simulated experimental data under different conditions have used verify reliability of DNN-based simultaneous measurement, demonstrate its...
We realize a scanning-free Brillouin optical time domain analyzer (BOTDA) based on an ultra-fine digital frequency comb (DOFC) with 1.95MHz spacing and 2GHz bandwidth. The DOFC can be used to reconstruct the gain spectrum (BGS) locate shift (BFS) without scanning thus improve measurement speed about 100 times compared conventional BOTDA. This BOTDA scheme has also been demonstrated experimentally 51.2m spatial resolution over 10km standard single mode fiber (SSMF) of 1.5°C for temperature...
A single-measurement sweep-free distributed Brillouin optical time domain analyzer (BOTDA) sensor based on phase detection is proposed and experimentally demonstrated employing digital frequency comb (DOFC) probe signal. Phase Spectrum (BPS) of DOFC induced by interaction measured using coherent in a single acquisition, without any scanning data averaging. Single-measurement BOTDA BPS 10km long fiber with response 100 μs, which limited only the length. The spatial resolution 51.2m,...
A spectrally efficient frequency division multiplexing (SEFDM) modulation has been proposed to improve system spectral efficiency, particularly for bandwidth-limited visible-light communication (VLC) systems. It employs non-orthogonal subcarriers achieve bandwidth savings at the expense of serious intercarrier interference (ICI); thus, complicated detectors are required receiver extract signals from ICI. In this paper, we carry out an analysis SEFDM and establish a quasi-multiple-input...
Benefiting from both Brillouin amplitude and phase spectral responses during scattering, a support vector machine (SVM) assisted optical time domain analyzer (BOTDA) enabling the improvement of sensing accuracy with only slight sacrifice processing speed has been proposed demonstrated. Only one SVM model, i.e. SVM-(g + p), is required to effectively combine gain information in training testing phases, which avoids separate spectrum (BGS) (BPS) fitting, hence saves time. Both simulation...
The maximum detectable vibration frequency by phase-sensitive optical time-domain reflectometer (Φ-OTDR) is limited the repetition rate of pump pulse. Additionally, intensity-demodulation based Φ-OTDR sensor suffers from generally nonlinear dependency backscattered intensity on vibration. This makes quantitative measurement difficult. In order to mitigate these limitations, we propose and demonstrate a multicore fiber (MCF) space-division multiplexed (SDM) Mach-Zehnder interferometer (MZI)...
Microfluidic techniques are widely used for high-throughput quantification and discrete analysis of micron-scale objects but difficult to apply molecular-scale targets. Instead, single-molecule methods primarily rely on low-throughput microscopic imaging immobilized molecules. Here we report that commercial-grade flow cytometers can detect single nucleic acid targets following enzymatic extension dense labeling with multiple distinct fluorophores. We focus microRNAs, short acids be extended...
Simultaneous temperature and strain sensing has been demonstrated for the first time to our knowledge by using forward Brillouin scattering (FBS) in a highly nonlinear fiber (HNLF). It is based on different responses of radial acoustic modes R 0, m torsional-radial TR 2, strain. High-order with large FBS gain an HNLF are chosen improve sensitivity. To reduce measurement error, method select best mode combination lowest errors proposed both simulation experiment. Three combinations have used...
Polarization-division-multiplexed (PDM) four-level pulse amplitude modulation (PAM4) with coherent detection is a promising low cost solution for 80 km inter-datacenter transmissions at 100 Gb/s and beyond. In this paper, three modified adaptive equalization algorithms the PDM-PAM4 optical systems, i.e. signal-phase aid least-mean-square (SP-LMS) algorithm, training multi-modulus algorithm (TMMA) cascaded four-modulus (CMMA-4), are proposed compared. Based on algorithms, 112 transmission...
Support vector machine (SVM) based differential pulse-width pair Brillouin optical time domain analyzer (DPP-BOTDA) has been proposed and experimentally demonstrated. With only one SVM model, temperature distribution along 5 km fiber under test successfully extracted from gain spectrum (BGS) measured different spatial resolution in DPP-BOTDA. The accuracy by is better than that Lorentzian curve fitting (LCF), especially when the pump pulse width difference number of trace averaging used...
A novel Brillouin optical time-domain analysis (BOTDA) system without frequency sweep operation is proposed using intensity-modulated direct detection orthogonal division multiplexing (IM-DD-OOFDM) probe signal. The influence of peak to average power ratio (PAPR) OFDM signal on the recovery gain spectrum (BGS) analyzed in theory and experiment. complex BGS reconstructed by channel estimation algorithm shift (BFS) located curve fitting intensity spectrum. IM-DD-OOFDM BOTDA demonstrated...
We propose and experimentally demonstrate a scheme of coherent Brillouin time domain analysis (BOTDA) system without any trace averaging. Assisted by commercial integrated receiver with local oscillator generated through single sideband modulation from the same laser source, signals carried on stable intermediate frequency (IF) are extracted electrical/digital filters then recovered to baseband digital signal processing. This increases signal-to-noise ratio avoids need averaging enables...
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text K. Zhong, X. Zhou, Y. Wang, T. Gui, Yang, J. Yuan, L. W. Chen, H. Zhang, Man, Zeng, C. Yu, A. P. Lau, and Lu, "Recent Advances in Short Reach Systems," Optical Fiber Communication Conference, OSA Technical Digest (online) (Optica Publishing Group, 2017), paper Tu2D.7. Export BibTex Endnote (RIS) HTML Plain alert Save article