Results 101 to 110 of about 5,422 (232)

Frozen Differential Scattering in Reconfigurable Complex Media

Laser &Photonics Reviews, EarlyView.
A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley   +1 more source

Near-infrared spectroscopy of low-transmittance samples by a high-power time-stretch spectrometer using an arrayed waveguide grating (AWG). [PDF]

Sci Rep, 2023
Kawagoe H, Sera H, Sahara J, Akai S, Watanabe K, Shinoyama K, Nagashima T, Yokoyama T, Ikarashi A, Yamada G.   +9 more
europepmc   +1 more source

Towards femtosecond laser written arrayed waveguide gratings

Optics Express, 2015
The fabrication of arrayed waveguide gratings (AWGs) using the femtosecond laser direct-write technique is investigated. We successfully demonstrate the fabrication of large planar waveguides that act as 2D free propagation zones. These slabs were found to have a highly uniform refractive index with a standard deviation of 1.97% relative to the total ...
G, Douglass, F, Dreisow, S, Gross, S, Nolte, M J, Withford   +4 more
openaire   +2 more sources

Loop Quantum Photonic Chip for Coherent Multi‐Time‐Step Evolution

Laser &Photonics Reviews, EarlyView.
A loop quantum photonic chip (Loop‐QPC) enabling efficient multi‐step quantum simulation in a single run is demonstrated. Combining recirculating loops with cycle‐or‐measure control, Loop‐QPC eliminates repeated reprogramming and reduces loss. Experimental demonstration of three‐step unitary evolution confirms high‐fidelity operation, showcasing the ...
Yuancheng Zhan, Hui Zhang, Rebecca Erbanni, Andreas Burger, Lingxiao Wan, Xudong Jiang, Sanghoon Chae, Ai Qun Liu, Dario Poletti, Leong Chuan Kwek   +9 more
wiley   +1 more source

Optimal Design of Arrayed Waveguide Grating

Journal of the Optical Society of Korea, 2004
This paper describes the optimal design of an AWG spectrum to meet various specifications and improve some physical parameters. The objective function is the norm of the difference between design parameters and target values. To obtain the design parameters, the Fourier model is employed and the design variables arc spacing of array waveguide, width of
openaire   +2 more sources

Giant Enhancement of the Anomalous Transverse Magneto‐Optical Kerr Effect in a Magneto‐Optical Grating

Nanophotonics, Volume 15, Issue 10, 27 May 2026.
We demonstrate an indirect magneto‐optical coupling mechanism that overrides the symmetry‐induced suppression of s‐polarized TMOKE. A quasi‐two‐dimensional grating coordinates orthogonal resonances to establish a near‐zero reflection background and maximal near‐field asymmetry, achieving a theoretical‐limit TMOKE of ∼2.
Zicheng Yang, Shuqiao Xu, Haoshuang Zhong, Guoyong Zhang, Hao Chen, Peng Zhan, Shuming Wang, Zhuo Chen, Zhenlin Wang   +8 more
wiley   +1 more source

Waveguide‐Based Four‐Channel Crosstalk‐Free Metahologram Multiplexed by Diffraction Orders

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
A diffraction‐order‐multiplexed, four‐channel metahologram integrates a flat glass waveguide and an array of titanium dioxide nanopillars to realize crosstalk‐free holographic projection. Light undergoes total internal reflection within the waveguide and gets out‐coupled by diffraction from the nanopillar array.
Zhiyu Ning, Zeyang Liu, Deqian Zheng, Niu Liu, Hao Gao, Tianzhang Peng, Ziqian Xi, Xinliang Zhang, Cheng Zhang   +8 more
wiley   +1 more source

Reciprocal Quantum Electrodynamics With Bound States in the Continuum

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
Quantum electrodynamics accurately describes all known forms of modern optics and photonics regarding interactions between photons and matter. In this context, bound states in the continuum with photon confinement in momentum space are envisioned to open an exciting branch called reciprocal quantum electrodynamics. It complements the cavity counterpart
Shoufeng Lan
wiley   +1 more source

Improving Channel Uniformity of Multiplexer with High-Degree-of-Freedom Auxiliary Waveguides

Optics
In order to further mitigate the channel non-uniformity at the junction between the input slab and the arrayed waveguide grating in traditional AWG structures, we design a highly flexible, structurally adaptive linear auxiliary waveguide.
Qingran Liu, Chenyan Zhang, Pengju Hu, Huanjie Chen, Xiyan Xu, Chongfu Zhang   +5 more
doaj   +1 more source

Column Address Selection in Optical RAMs With Positive and Negative Logic Row Access

IEEE Photonics Journal, 2013
An optical RAM row access gate followed by a column address selector for wavelength-division-multiplexing (WDM)-formatted words employing a single semiconductor optical amplifier-Mach-Zehnder interferometer (SOA-MZI) is presented.
C. Vagionas, S. Markou, G. Dabos, T. Alexoudi, D. Tsiokos, A. Miliou, N. Pleros, G. T. Kanellos   +7 more
doaj   +1 more source