Results 101 to 110 of about 26,548 (312)

Chip‐Integrated Metasurface‐GaAsSb Nanowire Array Photodetectors for Single‐Pixel Polarimetric Imaging

Advanced Optical Materials, EarlyView.
A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang, Ziyuan Li, Yitao Yang, Yang Yu, Lei Xu, Li Li, Songqin Zhang, Han Wang, Wenwu Pan, Chaohao Chen, Weiqi Jin, Wen Lei, Lorenzo Faraone, Chennupati Jagadish, Lan Fu   +14 more
wiley   +1 more source

Forces on a Rayleigh particle in the cover region of a planar waveguide

, 2000
We report on the optimization of a waveguide structure for the maximization of the radiation forces exerted on a Rayleigh particle in the cover region.
Luff, B.J., Ng, L.N., Wilkinson, J.S., Zervas, M.N.   +3 more
core   +1 more source

Design, fabrication, and characterization of deep-etched waveguide gratings [PDF]

, 2005
One-dimensional (1-D) deep-etched gratings on a specially grown AlGaAs wafer were designed and fabricated. The gratings were fabricated using state-of-the-art electron beam lithography and high-aspect-ratio reactive ion etching (RIE) in order to achieve ...
Linden, S., STANLEY C. R, Stanley, C.R., Aitchison, J.S., van Driel, H.M., KLECKNER T. C, LOCATELLI, Andrea, Morandotti, R., Locatelli, A., De Angelis, C., VAN DRIEL H. M, MONDIA J. P, Mondia, J.P., MORANDOTTI R, MODOTTO, Daniele, DE ANGELIS, Costantino, Modotto, D., Kleckner, T.C., LINDEN S, AITCHISON J. S.   +19 more
core   +1 more source

Waveguide Geometry–Driven Trade‐Offs in Resonant Cavity Sensor Performance

Advanced Optical Materials, EarlyView.
Waveguide geometry governs the interplay between sensitivity, intrinsic Q‐factor, and wavelength noise in silicon nitride resonant sensors. Contrary to intuition, higher sensitivity does not ensure superior performance. Low‐noise, high‐Q ridge resonators achieve the lowest detection limits, revealing that detection is ultimately constrained by noise ...
Mohammad Talebi Khoshmehr, Bakiye Imran Akca, Mateusz Słowikowski, Drecka Dagmara, Marcin Juchniewicz, Ryszard Piramidowicz, Muhammad Ali Butt   +6 more
wiley   +1 more source

Super‐Robust Telecommunications Enabled by Topological Half‐Supermodes

Advanced Science
Topological photonics offer transformative potential for robust integrated waveguide devices due to their backscattering‐immune properties. However, their integration faces two fundamental challenges: mode symmetry mismatch with conventional waveguides ...
Rui Zhou, Xintong Shi, Hai Lin, Yan Ren, Hang Liu, Zihao Yu, Jing Jin, Zhihao Lan, Menglin L. N. Chen   +8 more
doaj   +1 more source

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna, Jieliyue Sun, Wenyu Liu, Robert H. Hurt, Kimani C. Toussaint Jr.   +4 more
wiley   +1 more source

Numerical modeling of nanophotonic crystal waveguides and waveguide devices [PDF]

, 2019
The objective of this thesis is to construct numerical models for various characteristics of nanophotonic crystals (PCs) waveguide based on its geometrical variation and surface perturbation. The first major work of this thesis is to improve the coupling efficiency to the narrow single mode PC waveguide (PCWG) by using PC tapered waveguide (PCTW).
openaire   +2 more sources

Low insertion loss modulator based on a vertically coupled photonic crystal resonator

, 2012
We experimentally demonstrate a simple but more efficient technique to modulate and multiplex multiple WDM channels. Our design is based on a bus waveguide vertically coupled to multiple Photonic Crystal (PhC) resonator, each of which modulates an ...
Reed, G T, Graham Reed, Krauss, Thomas Fraser, Thomas F. Krauss, Liam O'Faolain, O'Faolain, Liam, Kapil Debnath, Frederic Y. Gardes, Debnath, Kapil, Thomson, D, Gardes, F Y, David Thomson   +11 more
core   +1 more source

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

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source