Results 71 to 80 of about 1,719 (170)

Parallel Vector Processing in Optical Computing With Jacobi Time‐Wave Packets

Laser &Photonics Reviews, EarlyView.
Functionality of a single neuron and state of the art photonic acceleration with a Mach‐Zehnder‐interferometer (MZI) mesh (i), a crossbar array (ii) and a micro ring resonator (MRR) array (iii). In the proposed Jacobi time‐wave packet approach (iv) a single modulator (here a ring modulator) is performing the whole scalar vector product in a single ...
Janosch Meier, Khaleda Mallick, Abhinand Venugopalan, Milind Bagul, Gouri Krishnan, Thomas Schneider   +5 more
wiley   +1 more source

Dual‐Metasurface‐Integrated Fiber Array for Bidirectional Cylindrical‐Vector‐Beam Multiplexed Communication Using Off‐Axis Spatial Manipulation

Laser &Photonics Reviews, EarlyView.
A dual‐layer metasurface is integrated on a fiber‐array facet to realize compact, plug‐and‐play free‐space optical links with cylindrical vector beam (CVB) space‐division multiplexing. An optimized off‐axis collimation layer steers multiple channels, while a Dammann vortex layer performs polarization–topology conversion for bidirectional CVB (de ...
Xipeng Lu, Jinke Li, Jin Tae Kim, Shaoyan Li, Hongliang Li, Duk‐Yong Choi, Sang‐Shin Lee   +6 more
wiley   +1 more source

A knowledge-based support vector synthesis of the transmission lines for use in microwave integrated circuits

, 2010
In this paper, we proposed an efficient knowledge-based support vector regression machine (SVRM) method to build synthesis models of the transmission lines for the microwave integrated circuits, with the highest possible accuracy using the fewest ...
Gürgen, Fikret, Tokan, Nurhan, Güneş, Filiz, Tokan, Nurhan Tuerker, Nurhan Türker Tokan, Fikret Gürgen, Filiz Güneş   +6 more
core   +1 more source

Near‐Infrared Soliton Crystal Generation in Silicon Resonators

Laser &Photonics Reviews, EarlyView.
Near‐infrared Kerr soliton generation in silicon is severely hindered by two‐photon and free‐carrier absorption. By combining transverse‐mode dispersion engineering with active free‐carrier extraction, monolithic silicon resonators support densely spaced, low‐noise soliton‐crystal combs spanning over 100 nm and, in a separate device, broadband ...
Yue Qin, Keyi Zhong, Yaojing Zhang, Hon Ki Tsang   +3 more
wiley   +1 more source

Multilayer porous waveguide for microwave low-loss applications

, 2011
A novel waveguide called multilayer porous waveguide (MPW) is proposed as microwave low-loss transmission lines. MPW is a fully rectangular dielectric waveguide composed of several periodically rectangular air gaps in a bulk dielectric that can be easily
Hassani, Alireza, Francois Legare, Alireza Hassani, Chaker, Mohamed, Ebrahim Mortazy, Wu, Ke, Ke Wu, Mohamed Chaker, Mortazy, Ebrahim, Legare, François   +9 more
core   +1 more source

Leaky Topological Edge State Cavities for On‐Chip Terahertz Sensing

Laser &Photonics Reviews, EarlyView.
Engineering radiation leakage in topological edge state cavities (TESCs) turns a conventional loss channel into a resource for enhancing on‐chip terahertz‐matter interactions. Tailoring the radiation leakage of a valley photonic crystal produces guided TESC with loaded Q factors up to 14 148 and leaky TESC with 2.2‐fold higher sensitivity, reaching 150.
Wenhao Wang, Zhonglei Shen, Ranjan Singh
wiley   +1 more source

Raman‐Enabled Platicon Microcomb and Stokes Soliton in 4H‐SiC Microresonator

Laser &Photonics Reviews, EarlyView.
We harness Raman gain in a silicon carbide microresonator to enable efficient platicon microcomb generation in the normal‐dispersion regime. The resulting platicon spans 1500–1700 nm with a pump‐to‐comb conversion efficiency up to 56%. Simultaneous excitation of a Stokes soliton within the same mode family further broadens the Raman–Kerr microcomb ...
Jingwei Li, Ruixuan Wang, Qing Li
wiley   +1 more source

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

Low-Microwave Loss Coplanar Waveguides Fabricated on High-Resistivity Silicon Substrate

, 2006
Three kinds of coplanar waveguides （CPWs） are designed and fabricated on different silicon substrates---common low-resistivity silicon substrate （LRS）, LRS with a 3μm-thick silicon oxide interlayer, and high-resistivity silicon （HRS） substrate.
Yang Hua, Zhu Hongliang, Zhao Lingjuan, Zhou Fan, Xie Hongyun, Wang Wei   +5 more
core  

Construction optimization and functional applications of fluorescent nanodiamonds

Responsive Materials, EarlyView.
This review summarizes synthesis, surface modification and optical properties of fluorescent nanodiamonds. Their advances in quantum sensing, single‐photon emission and biomedicine are discussed, and existing challenges and future directions are presented.
Yunpeng Yang, Sen Zhang, Chao Chen, Wensi Yang, Zuanquan Chen, Rui Fan, Linlin Liu, Benjian Liu, Kang Liu, Zhibo Zhang, Bing Dai, Jiaqi Zhu   +11 more
wiley   +1 more source