Results 31 to 40 of about 594,035 (375)
Reflectionless grating coupling for silicon-on-insulator integrated circuits [PDF]
, 2011 We propose a novel grating coupler design which is inherently reflectionless by focusing the reflected light away from the entrance waveguide.
Baets, Roel +6 more
core +1 more source
High-efficiency grating-couplers: demonstration of a new design strategy
Scientific Reports, 2017 We present a simple and practical strategy that allows to design high-efficiency grating couplers. The technique is based on the simultaneous apodization of two structural parameters: the grating period and the fill-factor, along with the optimization of
R. Marchetti +8 more
semanticscholar +1 more source
Fabricating waveguide Bragg gratings (WBGs) in bulk materials using ultrashort laser pulses
Nanophotonics, 2017 Optical waveguide Bragg gratings (WBGs) can be created in transparent materials using femtosecond laser pulses. The technique is conducted without the need for lithography, ion-beam fabrication methods, or clean room facilities.
Ams Martin +3 more
doaj +1 more source
The Sensitivity of Grating-Based SPR Sensors with Wavelength Interrogation
Italian National Conference on Sensors, 2019 In this paper, we derive the analytical expression for the sensitivity of grating-based surface plasmon resonance (SPR) sensors working in wavelength interrogation.
Jianjun Cao +3 more
semanticscholar +1 more source
Binary Amplitude Reflection Gratings for X-ray Shearing and Hartmann Wavefront Sensors
Sensors, 2021 New, high-coherent-flux X-ray beamlines at synchrotron and free-electron laser light sources rely on wavefront sensors to achieve and maintain optimal alignment under dynamic operating conditions. This includes feedback to adaptive X-ray optics.
Kenneth A. Goldberg +2 more
doaj +1 more source
A fully reconfigurable waveguide Bragg grating for programmable photonic signal processing
Optical Fiber Communications Conference and Exhibition, 2018 Since the discovery of the Bragg’s law in 1913, Bragg gratings have become important optical devices and have been extensively used in various systems. In particular, the successful inscription of a Bragg grating in a fiber core has significantly boosted
Weifeng Zhang, Jianping Yao
semanticscholar +1 more source
Aptamer Functionalized Lipid Multilayer Gratings for Label-Free Analyte Detection
Nanomaterials, 2020 Lipid multilayer gratings are promising optical biosensor elements that are capable of transducing analyte binding events into changes in an optical signal.
Plengchart Prommapan +4 more
doaj +1 more source
A Microlens Array Grating for Miniature Multi-Channel Spectrometers
Sensors, 2023 Most existing multi-channel spectrometers are constructed by physically stacking single-channel spectrometers, resulting in their large size, high weight, and limited number of channels. Therefore, their miniaturization is urgently needed. In this paper,
Shuonan Shan +5 more
doaj +1 more source
Multidimensional quasiballistic thermal transport in transient grating spectroscopy [PDF]
, 2015 Transient grating spectroscopy has emerged as a useful technique to study thermal phonon transport because of its ability to perform thermal measurements over length scales comparable to phonon mean free paths (MFPs).
Minnich, Austin J.
core +3 more sources