Results 51 to 60 of about 132,674 (264)

Laser-frequency locking techniques for high-sensitivity strain measurements by high-birefringence fiber Bragg gratings and resonators [PDF]

, 2007
A new approach to simultaneously interrogate orthogonal axes of single Fiber- Bragg-Gratings (FBGs) and FBG-FabryPerot resonator sensors fabricated in linearly highly birefringent (HiBi) fibre is presented.
Ferraro, P., Salza, M., R. Tatam, P. De Natale, Gagliardi, G., A. Di Maio, P. Ferraro, E. Chehura, M. Salza, De Natale, P., Tatam, Ralph P., Di Maio, A., Chehura, Edmon, G. Gagliardi, Salza M, Tatam R, Ferraro P, Di Maio A, De Natale P, Gagliardi G, Chehura E   +20 more
core   +1 more source

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source

Chiral Phonon–Driven Ultrafast Spin Currents in a Non‐Magnetic Ferroelectric

Advanced Materials, EarlyView.
Broadband terahertz emission spectroscopy shows signatures of ultrafast spin‐current generation in non‐magnetic ferroelectric β$\beta$’‐In2Se3${\rm In}_2{\rm Se}_3$. Reversal of the emitted field upon sample inversion and substitution of Pt with W indicates spin‐Hall‐mediated charge conversion, while polarization‐resolved measurements reveal ...
Thomas B. Gill, Ahmet Yagmur, Matthew Rogers, Luke Benson, Nathan Fox, Ben Muggleton, Zabeada Aslam, Conor McCluskey, Phoenix Robinson, Oscar Cespedes, Bryan Hickey, Timothy Moorsom, Marty Gregg, Edmund H. Linfield, Sukhdeep Dhillon, Satoshi Sasaki, Joshua R. Freeman   +16 more
wiley   +1 more source

Effects of random phase and amplitude errors in optical fiber Bragg gratings [PDF]

, 2000
This paper studies the influence of random phase and amplitude fabrication errors on the performance of optical filters based on fiber Bragg gratings (FBGs).
Feced, R., Zervas, M.N.
core   +1 more source

Toward Perception‐Native Electronic Skin: Bio‐Inspired In‐/Near‐Sensor and Neuromorphic Computing for Humanoid Robots

Advanced Materials Technologies, EarlyView.
Dense tactile streams from across the humanoid body converge on collide in a central wiring and data bottleneck. By relocating computation closer to and then into the skin itself, near‐ and in‐sensor architectures, together with neuromorphic computing, chart a path toward perception‐native electronic skin, in which the conversion of stimulus into ...
Mijin Kim, Chang‐Jae Beak, Jiyoung Park, Youngdo Jung, Sunjong Oh, Sin‐Hyung Lee, Bo‐Yeon Lee   +6 more
wiley   +1 more source

Microscale 3D‐Printed Digital Strain Switches for Embedded Mechanical Computation

Advanced Materials Technologies, EarlyView.
Microscale 3D‐printed strain switches on flexible films convert deformation into native digital signals at geometry defined thresholds. A closed form model predicts switching from 3000 to 15 000 microstrain and is validated across 110 devices. Reliable ohmic closure and strain activated AND, OR, and XOR logic point toward low‐power mechanical ...
Regan Kubicek, Daniel Quinn, Gabriel Smith, Sarah Bergbreiter   +3 more
wiley   +1 more source

Long-term stability decay of standard and regenerated Bragg gratings tailored for high temperature operation

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Thermal stability of both standard and regenerated Bragg gratings written in normal and photosensitive optical fibers was accessed. An apparent spectral wavelength stabilization of common gratings with no thermal hysteresis was reached after thermal ...
F. K. Coradin, V. de Oliveira, M. Muller, H. J. Kalinowski, J. L. Fabris   +4 more
doaj   +1 more source

Tilted Fiber Bragg Gratings (TFBGs) Temperature Sensing Element Using 244nm AR+ Laser Written on Side Hole Fiber

Diyala Journal of Engineering Sciences, 2015
Tilted Fiber Bragg Gratings (TFBGs) are designed and implemented at the 1550 nm communication window in Institute of Optoelectronic Technology, China Jiliang University, Hangzhou, China.
Riyadh Khlf Ahmed, Khalil I. Hajim , Jingyi Yang , Xinyong Dong   +3 more
doaj   +1 more source

Dielectric Permittivity Tensor of Muscovite for Next Generation All Van Der Waals Broadband Photonic Components

Advanced Optical Materials, EarlyView.
Low‐index and low‐loss vdW muscovite represents an emerging robust dielectric platform for the creation of next‐generation all‐vdW nanophotonic architectures. Its utilization as a low‐index building‐block in all‐vdW multilayers enables extreme optical contrast when paired with MoS2, paving the way to the realization of few‐layer ultrathin DBS ...
Meri H. Hayrapetyan, Maksim L. Sargsyan, Davit A. Karakhanyan, Ani P. Khachatryan, Maria A. Levonyan, Dmitrii Litvinov, Maciej Koperski, Artsruni V. Margaryan, Makars Šiškins, Konstantin S. Novoselov, Davit A. Ghazaryan   +10 more
wiley   +1 more source

Advanced fibre Bragg gratings: application to dispersion compensation

, 1999
This thesis presents the design and fabrication issues related to advanced fibre Bragg gratings with particular emphasis on realising novel devices with application to dispersion compensation.
Durkin, Michael Kevan
core   +1 more source