Results 81 to 90 of about 20,938 (278)

Extremely short-length surface plasmon resonance sensors [PDF]

, 2008
The impact of the system design on the control of coupling between planar waveguide modes and surface plasmon polaritons (SPP) is analyzed. We examine how the efficiency of the coupling can be enhanced by an appropriate dimensioning of a multi-layer ...
Alexandre V. Kats, Boltasseva, Bozhevolnyi, Bozhevolnyi, Bozhevolnyi, Chen, Ctyroky, Ditlbacher, Dwivedi, Gauvreau, Harris, Harris, Homola, Homola, Homola, Johnstone, Kats, Kats, Lambeck, Lopez-Tejeira, Maxim L. Nesterov, Mikhailov, Nakano, Nemova, Nemova, Ordal, Rodrigo, Sergei K. Turitsyn, Shevchenko, Skorobogatiy, Skorobogatiy, Zayats, Zayats   +32 more
core   +3 more sources

All-fiber bandwidth tunable ultra-broadband mode converters based on long-period fiber gratings and helical long-period gratings

Optics Express, 2020
We demonstrated the fabrication of bandwidth tunable ultra-broadband mode converters based on CO2-laser inscribed long-period fiber gratings (LPFGs) and helical long-period gratings (HLPGs) in a two-mode fiber (TMF). The simulation and experimental results show that there is a dual-resonance coupling from LP01 to LP11 core mode at the dispersion ...
Xinyi Zhao, Yunqi Liu, Zuyao Liu, Chengbo Mou   +3 more
openaire   +2 more sources

Long period gratings in photonic crystal fibers [PDF]

Photonic Sensors, 2011
The authors review the recent advances in fabricating long-period gratings (LPGs) in photonic crystal fibers (PCFs). The novel light-guiding properties of the PCFs allow the demonstration of novel sensors and devices based on such LPGs. The sensitivity of these PCF LPGs to temperature, strain and refractive index is discussed and compared with LPGs ...
Ju, J, Jin, W
openaire   +2 more sources

Polarization‐Sensitive Au‐TiO2 Nanopillars for Tailored Plasmonic Enhanced Light‐Driven Reaction Activity

Advanced Optical Materials, EarlyView.
Manipulating the product generation yield is achieved on a model plasmonic resonance‐driven reaction by tuning the nonthermal effects of localized surface plasmonic resonance on an elliptical Au‐TiO2 nanopillar metasurface. Asymmetric configuration of the elliptical nanopillar array governs the polarization‐dependent optical properties redshifting the ...
Ning Lyu, Anjalie Edirisooriya, Zelio Fusco, Dawei Liu, Lan Fu, Fiona J. Beck, Christin David   +6 more
wiley   +1 more source

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

Advanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett, Maxwell Hammond, Niloufar Seyfi, Amirreza Fahim Golestaneh, Venanzio Cichella, Caterina Lamuta   +5 more
wiley   +1 more source

A New Setup for Real-Time Investigations of Optical Fiber Sensors Subjected to Gamma-Rays: Case Study on Long Period Gratings

Sensors, 2020
In this work, we present a new setup for real-time investigations of optical fibers and optical fiber sensors while being subjected to gamma-rays. The investigation of the radiation effects on novel or well-assessed sensing devices has attracted a lot of
Andrei Stancalie, Flavio Esposito, Constantin Daniel Neguț, Marian Ghena, Razvan Mihalcea, Anubhav Srivastava, Stefania Campopiano, Agostino Iadicicco   +7 more
doaj   +1 more source

New multiplexing scheme for monitoring fiber optic Bragg grating sensors in the coherence domain

, 1997
A new multiplexing scheme for monitoring fiber optic Bragg gratings in the coherence domain has been developed. Grating pairs with different grating distances are distributed along a fiber line, and interference between their reflections is monitored ...
Dakin, J.P., Ecke, W., Rothardt, M., Schauer, J., Usbeck, K., Willsch, R.   +5 more
core   +1 more source

Integrated all-optical logic discriminators based on plasmonic bandgap engineering [PDF]

, 2013
Optical computing uses photons as information carriers, opening up the possibility for ultrahigh-speed and ultrawide-band information processing. Integrated all-optical logic devices are indispensible core components of optical computing systems. However,
Gong, Qihuang, Hu, Xiaoyong, Lu, Cuicui, Yang, Hong   +3 more
core   +2 more sources

Mechanically-induced π-shifted long-period fiber gratings

Optics Express, 2011
A band-pass filter based on mechanically-induced multi-π-shifted long-period fiber gratings is proposed. The pass band width of the filter depends on the number N of the sub-gratings divided by π-shifts in the long-period fiber grating. The depth of the two lateral rejection bands can be changed by the amount of pressure applied to the fiber.
Xiaojun, Zhou, Shenghui, Shi, Zhiyao, Zhang, Jun, Zou, Yong, Liu   +4 more
openaire   +2 more sources

UTact: Underwater Vision‐Based Tactile Sensor with Geometry Reconstruction and Contact Force Estimation

Advanced Robotics Research, EarlyView.
Embedded flexible sensing technologies advance underwater soft robotics, yet most systems still suffer from hysteresis and limited perceptiveness. Instead, vision‐based tactile sensors provide reliable and rapid feedback essential for complex underwater tasks.
Qiyi Zhang, Zonghao Zuo, Haoxuan Wang, Bin Liu, Yilidusi Yilihamu, Li Wen   +5 more
wiley   +1 more source