Results 31 to 40 of about 1,912,482 (249)

Frequency-Shifted Interferometry — A Versatile Fiber-Optic Sensing Technique

Sensors, 2014
Fiber-optic sensing is a field that is developing at a fast pace. Novel fiber-optic sensor designs and sensing principles constantly open doors for new opportunities.
Fei Ye, Yiwei Zhang, Bing Qi, Li Qian
doaj   +1 more source

Optical Gas Sensor Fabrication Based on Porphyrin-Anchored Electrostatic Self-Assembly onto Tapered Optical Fibers [PDF]

, 2012
Tapered optical fibers with nano-assembled coatings of thicknesses of order tens of nanometres were used for the detection of ammonia gas. The film coating was composed of alternate layers of tetrakis-(4-sulfophenyl) porphine (TSPP) and poly(allylamine ...
Lee, Seung-Woo, Tatam, Ralph P., Korposh, Sergiy, James, Stephen W., Batty, William J., Jarzebinska, Renata   +5 more
core   +1 more source

Energy harvesting over a fiber–optic distributed acoustic sensor

, 2023
Fiber-optic distributed acoustic sensor (DAS) has been deployed for real-time monitoring of various physical phenomena. The operational principle of DAS relies on monitoring backscattered light from a fiber while leaving the pump optical pulses to get ...
Ashry, Islam, Ng, Tien Khee, Marin Mosquera, Juan Manuel, Kang, Chun Hong, Ooi, Boon S., Alkhazragi, Omar, Trichili, Abderrahmen   +6 more
core   +1 more source

Reviews on Corrugated Diaphragms in Miniature Fiber-Optic Pressure Sensors

Applied Sciences, 2019
Corrugated diaphragms (CDs) have been widely used in many fields because of their higher pressure sensitivity and wider linear range compared to flat diaphragms (FDs) in the same circumstances.
Honglin Li, Hui Deng, Guangqi Zheng, Mingguang Shan, Zhi Zhong, Bin Liu   +5 more
doaj   +1 more source

Edible oils adulteration analysis by fiber optic multimode displacement sensor [PDF]

, 2022
A fiber optic sensor has been developed to detect the adulteration in edible oil, particularly coconut oil. In this paper, the sensing mechanism uses MMF-MMF based on displacement sensors by employing the lateral offset method.
Othman, Maisara, Nordin, Siti Noraminah, Haroon, Hazura, Anbalagan, Thanigai   +3 more
core   +1 more source

Multi-channel fiber-optic temperature sensor system using an optical time-domain reflectometer

Results in Physics, 2018
In this study, we developed a multi-channel fiber-optic temperature sensor system (FTSS) using an optical time-domain reflectometer (OTDR). The developed FTSS consists of fiber-optic temperature-sensing probes, a fiber-optic coupler, a transmitting ...
H.J. Kim, H. Byun, Y.B. Song, S.H. Shin, S. Cho, C.H. Pyeon, B. Lee   +6 more
doaj   +1 more source

High performance architecture design for large scale fibre-optic sensor arrays using distributed EDFAs and hybrid TDM/DWDM [PDF]

, 2013
A distributed amplified dense wavelength division multiplexing (DWDM) array architecture is presented for interferometric fibre optic sensor array systems. This architecture employs a distributed erbium doped fibre amplifier (EDFA) scheme to decrease the
Kingsley, S.A., Austin, E.A., Nash, P.J., Richardson, D.J., Liao, Y.   +4 more
core   +1 more source

Smart Adhesive Joint with High-Definition Fiber-Optic Sensing for Automotive Applications

Sensors, 2020
Structural health monitoring of fiber-reinforced composite-based joints for automotive applications during their manufacturing and on-demand assessment for its durability in working environments is critically needed.
Stephen Young, Dayakar Penumadu, Darren Foster, Hannah Maeser, Bharati Balijepalli, Jason Reese, Dave Bank, Jeff Dahl, Patrick Blanchard   +8 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

In situ detection of spatial distribution information of temperature-pH-strain of sandstone cultural relics

npj Materials Degradation
To monitor in situ the temperature, pH, and micro-strain change information of sandstone artifacts in the process of oxalic acid corrosion, the temperature, pH, and micro-strain fiber Bragg grating (FBG) sensors are developed.
Changyuan Xu, Linyang Li, Rong Hu, Huihua Wu, Lingnan Kong, Nianbing Zhong, Bo Wan, Lei Wu, Dong Lai, Yuanyuan He, Yang Liu, Xiaoling Peng, Mingfu Zhao, Quanhua Xie   +13 more
doaj   +1 more source