Results 31 to 40 of about 8,951,468 (293)

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

Radio-frequency ring resonators for self-referencing fiber-optic intensity sensors [PDF]

, 2005
A theoretical and experimental study of radiofrequency ring resonators (RR) for referencing and improving the sensitivity of fiber-optic intensity sensors (FOS) is reported.
Contreras Lallana, Pedro, Vázquez García, María Carmen, Montalvo García, Julio   +2 more
core   +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

A Large Area Fiber Optic Gyroscope on multiplexed fiber network [PDF]

, 2013
We describe a fiber optical gyroscope based on the Sagnac effect realized on a multiplexed telecom fiber network. Our loop encloses an area of 20 km2 and coexists with Internet data traffic.
LEVI, FILIPPO, G. A. Costanzo, Levi, F., Costanzo, Giovanni Antonio, A. Mura, Pizzocaro, Marco, CALONICO, DAVIDE, M. Pizzocaro, D. Calonico, Clivati, Cecilia, Calonico, D., C. Clivati, F. Levi, Mura, A.   +13 more
core   +1 more source

Fiber-optic chemical sensing with Langmuir-Blodgett overlay waveguides [PDF]

, 1999
Fiber-optic chemical sensing has been demonstrated with a side-polished single- mode optical fiber, evanescently coupled to chemically sensitive Langmuir- Blodgett (LB) overlay waveguides.
Tatam, Ralph P., Flannery, D., James, Stephen W., Ashwell, Geoffrey J.   +3 more
core   +1 more source

Fabry-Perot Interferometric High-Temperature Sensing Up to 1200 °C Based on a Silica Glass Photonic Crystal Fiber

Sensors, 2018
A Fabry-Perot interferometric sensor for temperature measurement was fabricated based on a silica glass solid-core photonic crystal fiber with a central air-bore.
Haihu Yu, Ying Wang, Jian Ma, Zhou Zheng, Zhuozhao Luo, Yu Zheng   +5 more
doaj   +1 more source

Distributed fiber optic interferometric geophone system based on draw tower gratings

Photonic Sensors, 2017
A distributed fiber optic interferometric geophone array based on draw tower grating (DTG) array is proposed. The DTG geophone array is made by the DTG array fabricated based on a near-contact exposure through a phase mask during the fiber drawing ...
Ruquan Xu, Huiyong Guo, Lei Liang
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

Applied Fiber Optic Measurement for Geohydraulic Engineering [PDF]

, 1997
Engineers have long sought the possibility of measuring parameters such as temperature and pressure continuously in the underground with high precision, high spatial resolution and high band width of parameters. Distributed fibre optic measurement offers
Nishigaki, Makoto, Schreck, Martin
core   +1 more source

A novel high temperature resistant Mo-Cu functional gradient coating for optic fiber Bragg grating

Results in Physics, 2019
A novel metal gradient coating of optic fiber, which contains a molybdenum (Mo)-copper (Cu) functional gradient layer and a nickel (Ni) protective layer, is fabricated by magnetron sputtering and electroplating processes, respectively.
Jianyu He, Liyun Ding, Jun Cai, Wenjie Zhu, Jixiang Dai   +4 more
doaj   +1 more source