Results 41 to 50 of about 2,829,520 (337)

How the Material Characteristics of Optical Fibers and Soil Influence the Measurement Results of Distributed Acoustic Sensing

Sensors, 2023
Fiber optic distributed acoustic sensing (DAS) technology is widely used in security surveillance and geophysical survey applications. The response of the DAS system to external vibrations varies with different types of fiber optic cable connections. The
Ke Jiang, Lei Liang, Xiaoling Tong, Feiyu Zeng, Xiaolong Hu   +4 more
doaj   +1 more source

A Novel Method for Extending Dynamic Range in Time-Division-Multiplexing Linear Sagnac Systems Based on Time Slot Insertion

IEEE Access
The time-division multiplexed linear Sagnac sensing system significantly reduces the cost of interferometric fiber-optic sensor arrays and holds substantial potential for engineering applications.
Kun Jia, Yixiao Ma, Lai Zhang, Xin Lai, Qian Xiao, Bo Jia   +5 more
doaj   +1 more source

A Two Fiber Bragg Gratings Sensing System to Monitor the Torque of Rotating Shaft

Sensors, 2016
By fixing two FBGs on the surface of a rotating shaft along the direction of ±45° and using dynamic wavelength demodulation technology, we propose an optical fiber sensing system to monitor the driving torque and torsion angle of the rotating shaft.
Yongjiao Wang, Lei Liang, Yinquan Yuan, Gang Xu, Fang Liu   +4 more
doaj   +1 more source

Sapphire Fiber Fabry-Perot Sensors With High Fringe Visibility

IEEE Photonics Journal, 2022
It is difficult for sapphire fiber Fabry-Perot (FP) sensors to generate high quality interference fringes because their highly multimode property. In this paper, we report a sapphire fiber FP strain sensing system with high fringe visibility, realized by
Jiawei Zhang, Dongsheng Zhang, Chao Pan, Minghong Yang   +3 more
doaj   +1 more source

Research on Fiber Optic Surface Plasmon Resonance Biosensors: A Review

Photonic Sensors
Due to the benefits of the high sensitivity, real-time response, no labeling requirement, and good selectivity, fiber optic sensors based on surface plasmon resonance (SPR) have gained popularity in biochemical sensing in recent years.
Qi Wang, Dian-Yun Zhang, Yizhuo Qian, Xiang-Yu Yin, Lei Wang, Shu-Shuai Zhang, Yu-Yang Wang   +6 more
semanticscholar   +1 more source

Optical Fiber Grating Hydrogen Sensors: A Review

Sensors, 2017
In terms of hydrogen sensing and detection, optical fiber hydrogen sensors have been a research issue due to their intrinsic safety and good anti-electromagnetic interference.
Jixiang Dai, Li Zhu, Gaopeng Wang, Feng Xiang, Yuhuan Qin, Min Wang, Minghong Yang   +6 more
doaj   +1 more source

Fiber Optical Hydrogen Sensor Based on WO₃-Pd₂Pt-Pt Nanocomposite Films

Nanomaterials, 2021
In this paper, WO3-Pd2Pt-Pt nanocomposite films were deposited on a single mode fiber as the hydrogen sensing material, which changes its reflectivity under different hydrogen concentration.
Jixiang Dai, Yi Li, Hongbo Ruan, Zhuang Ye, Nianyao Chai, Xuewen Wang, Shuchang Qiu, Wei Bai, Minghong Yang   +8 more
doaj   +1 more source

Ultra-Weak Fiber Bragg Grating Sensing Network Coated with Sensitive Material for Multi-Parameter Measurements

Sensors, 2017
A multi-parameter measurement system based on ultra-weak fiber Bragg grating (UFBG) array with sensitive material was proposed and experimentally demonstrated.
Wei Bai, Minghong Yang, Chenyuan Hu, Jixiang Dai, Xuexiang Zhong, Shuai Huang, Gaopeng Wang   +6 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

Measurement of Optical Path Difference Based on Phase Modulation of Light Source for Meter-Scale and Kilometer-Scale Optical Fiber Interferometers

IEEE Access
It is crucial in a wide range of applications based on optical fiber interferometry to precisely measure the length difference. In this article, a method of measuring the optical path difference between two arms of an optical fiber interferometer system ...
Xin Lai, Yuchen Song, Lai Zhang, Yixiao Ma, Qiuheng Song, Qian Xiao, Hongyan Wu, Bo Jia   +7 more
doaj   +1 more source