Results 111 to 120 of about 21,873 (288)

Theory of optical long-baseline interferometry on polarized sources

Astronomy & Astrophysics
The effects of the polarization characteristics of beam trains in optical long-baseline interferometers are well known and have led to difficulties in measuring the spatial coherence of astronomical sources in the past.
Perrin G.
doaj   +1 more source

Three‐Dimensional Optical Characterization of Magnetostrictive Deformation in Magnomechanical Systems

Laser &Photonics Reviews, EarlyView.
An optical approach is proposed for real‐time and high‐precision detection of the magnetostrictive deformation of an yttrium‐iron‐garnet sphere in three dimensions, based on the deformation induced spatial high‐order modes of the scattered field, postselection, and balanced homodyne detection.
Xiaomin Liu, Jing Zhang, Jie Li, Rongguo Yang, Jiangrui Gao, Tiancai Zhang   +5 more
wiley   +1 more source

High‐Efficiency Graphene‐Silicon Slot‐Waveguide Microring Modulator at 1.5 and 2 µm Wavelength Bands

Laser &Photonics Reviews, EarlyView.
E/O modulators typically face a trade‐off between bandwidth and modulation efficiency. An integrated E/O modulator is presented that simultaneously achieves wideband, large bandwidth, and high modulation efficiency operation by embedding a partially overlapped double‐layer graphene on a compact silicon slot‐waveguide microring resonator.
Chao Luan, Deming Kong, Yong Liu, Yunhong Ding, Hao Hu   +4 more
wiley   +1 more source

Accurate strain sensing based on super-mode interference in strongly coupled multi-core optical fibres

Scientific Reports, 2017
We report on the use of a multi-core fibre (MCF) comprising strongly-coupled cores for accurate strain sensing. Our MCF is designed to mode match a standard single mode optical fibre.
Joel Villatoro, Oskar Arrizabalaga, Gaizka Durana, Idurre Sáez de Ocáriz, Enrique Antonio-Lopez, Joseba Zubia, Axel Schülzgen, Rodrigo Amezcua-Correa   +7 more
doaj   +1 more source

Sub-Aperture Interferometers [PDF]

, 2010
Sub-aperture interferometers -- also called wavefront-split interferometers -- have been developed for simultaneously measuring displacements of multiple targets.
Zhao, Feng
core  

Comb‐Driven Coherent Optical Transmitter for Scalable DWDM Interconnects

Laser &Photonics Reviews, EarlyView.
A comb‐driven coherent optical transmitter on a Si/SiN platform enables scalable DWDM interconnects by integrating ultra‐compact microring‐assisted modulators and interleavers. High‐baud coherent signaling achieves 400 Gb/s per wavelength and >$>$1 Tb/s multi‐channel transmission, with projected >$>$10 Tb/s per fiber, offering a path toward energy ...
Alireza Geravand, Erwan Weckenmann, Jean‐Michel Vallée, Farshid Shateri, Zibo Zheng, Simon Levasseur, Bo Yang, Jiajian Chen, Ting Wang, Zihao Wang, Leslie A. Rusch, Wei Shi   +11 more
wiley   +1 more source

Optimal Universal Bounds for Waves With Varied Coherence Based on Supremum and Infimum Coherence Spectra

Laser &Photonics Reviews, EarlyView.
Coherence variation is ubiquitous in nature, yet determining how it constrains physical observables remains challenging for multimode waves. To address this challenge, this work establishes a majorization‐based theory that identifies the supremum and infimum in the set of input coherence spectra, which provide optimal universal bounds for any linear ...
Shiyu Li, Cheng Guo
wiley   +1 more source

Interferometer Techniques for Gravitational-Wave Detection

Living Reviews in Relativity, 2010
Several km-scale gravitational-wave detectors have been constructed world wide. These instruments combine a number of advanced technologies to push the limits of precision length measurement.
Andreas Freise, Kenneth Strain
doaj  

Entanglement-Enhanced Atomic Gravimeter

Physical Review X
Interferometers based on ultracold atoms enable an absolute measurement of inertial forces with unprecedented precision. However, their resolution is fundamentally restricted by quantum fluctuations.
Christophe Cassens, Bernd Meyer-Hoppe, Ernst Rasel, Carsten Klempt   +3 more
doaj   +1 more source

Structure design and implementation of a water cooling sub-20 nm multilayer Kirkpatrick-Baez mirror system in the Structural Dynamics beamline ID23 at HEPS. [PDF]

J Synchrotron Radiat
A water‐cooling nano multilayer Kirkpatrick–Baez mirrors system has been implemented at ID23 HEPS. The focal spot size of 13.39 nm × 15.15 nm (H × V) at a photon energy of 21.8 keV demonstrates the system's performance.The first water‐cooling nano multilayer Kirkpatrick–Baez mirror system in the Structural Dynamics beamline (ID23) at High Energy Photon
Liao R, Yu H, Wang J, Wang X, Zhang C, Kang W, Fan L, Yao C, Hou P, Sun D, Liu F, Zhang L, Cui Z, Ren Z, Ou Z, Xu R, Fu D, Wang Y, Li P, Zhang C, Bian L, Zhang M, Gu Z, Li Z, Shen Z, Gao L, Zhang B, Tang S, Li M, Sheng W.   +29 more
europepmc   +2 more sources