Results 1 to 10 of about 136,205 (300)

Chaos Raman distributed optical fiber sensing. [PDF]

Light Sci Appl, 2023
Abstract The physics principle of pulse flight positioning is the main theoretical bottleneck that restricts the spatial resolution of the existing Raman distributed optical fiber sensing scheme. Owing to the pulse width of tens of nanoseconds, the spatial resolution of the existing Raman distributed optical fiber sensing scheme with kilometer ...
Wang C, Li J, Zhou X, Cheng Z, Qiao L, Xue X, Zhang M.   +6 more
europepmc   +4 more sources

Rayleigh-Based Distributed Optical Fiber Sensing. [PDF]

Sensors (Basel), 2022
Distributed optical fiber sensing is a unique technology that offers unprecedented advantages and performance, especially in those experimental fields where requirements such as high spatial resolution, the large spatial extension of the monitored area, and the harshness of the environment limit the applicability of standard sensors.
Palmieri L, Schenato L, Santagiustina M, Galtarossa A.   +3 more
europepmc   +4 more sources

Dual-Mode Comb Plasmonic Optical Fiber Sensing. [PDF]

ACS Sens
A partially gold-coated tilted FBG is proposed for self-referenced plasmonic sensing. The device exhibits two interleaved combs of resonances with unpolarized light; one comb is used as a reference and the other as a sensor.
Villatoro E, Loyez M, Villatoro J, Caucheteur C, Albert J.   +4 more
europepmc   +3 more sources

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

Crystals, 2021
In the past few decades, the multifunctional optical crystals for all-solid-state Raman lasers have been widely studied by many scholars due to their compactness, convenience and excellent performance.
Hui Zhao, Shibo Dai, Siqi Zhu, Hao Yin, Zhen Li, Zhenqiang Chen   +5 more
doaj   +1 more source

Deep Learning-Based Robust Visible Light Positioning for High-Speed Vehicles

Photonics, 2022
Robustness is a key factor for real-time positioning and navigation, especially for high-speed vehicles. While visible light positioning (VLP) based on LED illumination and image sensors is widely studied, most of the VLP systems still suffer from the ...
Danjie Li, Zhanhang Wei, Ganhong Yang, Yi Yang, Jingwen Li, Mingyang Yu, Puxi Lin, Jiajun Lin, Shuyu Chen, Mingli Lu, Zhe Chen, Zoe Lin Jiang, Junbin Fang   +12 more
doaj   +1 more source

Graphene-Fiber Biochemical Sensors: Principles, Implementations, and Advances

Photonic Sensors, 2021
Single atomically thick graphene, with unique structural flexibility, surface sensitivity, and effective light-mater interaction, has shown exceptional advances in optoelectronics. It opens a door for diverse functionalized photonic devices, ranging from
Ning An, Chenye Qin, Yiwei Li, Teng Tan, Zhongye Yuan, Hao Zhang, Yu Wu, Baicheng Yao, Yunjiang Rao   +8 more
doaj   +1 more source

Optical Fiber Sensing Using Quantum Dots [PDF]

Sensors, 2007
Recent advances in the application of semiconductor nanocrystals, or quantumdots, as biochemical sensors are reviewed. Quantum dots have unique optical properties thatmake them promising alternatives to traditional dyes in many luminescence basedbioanalytical techniques.
Pedro Jorge, Manuel António Martins, Tito Trindade, José Luís Santos, Faramarz Farahi   +4 more
openaire   +4 more sources

Energy Transfer and Cross-Relaxation Induced Efficient 2.78 μm Emission in Er³⁺/Tm³⁺: PbF₂ mid-Infrared Laser Crystal

Crystals, 2021
An efficient enhancement of 2.78 μm emission from the transition of Er3+: 4I11/2 → 4I13/2 by Tm3+ introduction in the Er/Tm: PbF2 crystal was grown by the Bridgman technique for the first time. The spectroscopic properties, energy transfer mechanism, and
Jiayu Liao, Qiudi Chen, Xiaochen Niu, Peixiong Zhang, Huiyu Tan, Fengkai Ma, Zhen Li, Siqi Zhu, Yin Hang, Qiguo Yang, Zhenqiang Chen   +10 more
doaj   +1 more source

Recent Advances in Phase-Sensitive Optical Time Domain Reflectometry (Ф-OTDR)

Photonic Sensors, 2021
Phase-sensitive optical time domain reflectometry (Ф-OTDR) is an effective way to detect vibrations and acoustic waves with high sensitivity, by interrogating coherent Rayleigh backscattering light in sensing fiber. In particular, fiber-optic distributed
Yunjiang Rao, Zinan Wang, Huijuan Wu, Zengling Ran, Bing Han   +4 more
doaj   +1 more source

Tera-sample-per-second arbitrary waveform generation in a synthetic dimension

Communications Physics, 2023
Synthetic dimension opens new horizons in quantum physics and topological photonics by enabling new dimensions for field and particle manipulations.
Yiran Guan, Jiejun Zhang, Lingzhi Li, Ruidong Cao, Guangying Wang, Jingxu Chen, Xudong Wang, Bai-Ou Guan, Jianping Yao   +8 more
doaj   +1 more source