Results 21 to 30 of about 247,892 (261)

A simple method for fabricating phase-shifted fibre Bragg gratings with flexible choice of centre wavelength [PDF]

, 2009
A simple technique for fabricating phase-shifted fibre Bragg gratings (PSFBGs) without the use of a phase-shifted phase mask is presented. Two, 3-mm long, standard fibre Bragg gratings (FBGs) were inscribed sequentially in singlemode fibre at the same
Ralph P. Tatam, Tatam, Ralph P., Chehura, Edmon, James, Stephen W., Stephen W. James, Edmon Chehura   +5 more
core   +1 more source

Hot Electron Plasmon-Resonant Grating Structures for Enhanced Photochemistry: A Theoretical Study

Crystals, 2021
Metallic grating structures have been shown to provide an effective platform for generating hot electrons and driving electrochemical reactions. Here, we present a systematic theoretical study of the surface plasmon resonance in different corrugated ...
Indu Aravind, Yu Wang, Zhi Cai, Lang Shen, Bofan Zhao, Sisi Yang, Yi Wang, Jahan M. Dawlaty, George N. Gibson, Ernest Guignon, Nathaniel C. Cady, William D. Page, Arturo Pilar, Stephen B. Cronin   +13 more
doaj   +1 more source

Modified coupled-mode model for thermally chirped polymer Bragg gratings [PDF]

, 2010
A modified coupled-mode (CM) model is proposed for the optical behavior of thermally chirped Bragg gratings. The model accounts for the axial gradient in the modulation wavenumber, which has been ignored in the classical CM model. The model is used to
Sher, Ilai, Bar-Cohen, A., Han, B.
core   +1 more source

Design of an 845-nm GaAs Vertical-Cavity Silicon-Integrated Laser with an Intracavity Grating for Coupling to a SiN Waveguide Circuit

IEEE Photonics Journal, 2017
A short-wavelength hybrid GaAs vertical-cavity silicon-integrated laser (VCSIL) with in-plane waveguide coupling has been designed and optimized using numerical simulations.
Sulakshna Kumari, Johan Gustavsson, Emanuel P. Haglund, Jorgen Bengtsson, Anders Larsson, Gunther Roelkens, Roel Baets   +6 more
doaj   +1 more source

Silicon Add-Drop Filter Based on Multimode Grating Assisted Couplers

IEEE Photonics Journal, 2016
We demonstrate the design, fabrication, and characterization of a two-mode silicon add-drop filter, which is based on multimode grating-assisted contra-directional couplers.
Huiye Qiu, Yuxia Su, Fuzhong Lin, Jianfei Jiang, Ping Yu, Hui Yu, Jianyi Yang, Xiaoqing Jiang   +7 more
doaj   +1 more source

Differential phase tracking applied to Bragg gratings in multi-core fibre for high accuracy curvature measurement [PDF]

, 2006
High resolution quasi-static and dynamic curvature measurements are made by differential interferometric phase measurement of fibre Bragg gratings in separate cores of a multi-core fibre.
Flockhart, G M H, Kirkendall, Clay K., Clay K. Kirkendall, Cranch, G A, Flockhart, Gordon M. H., Geoffrey A. Cranch, Kirkendall, C K, Gordon M. H. Flockhart, Cranch, Geoffrey A.   +8 more
core   +1 more source

A Chirp-Managed Tunable DBR Laser Based on Novel Cascaded Gratings

IEEE Photonics Journal, 2018
In this paper, a novel tunable DBR laser based on novel cascaded gratings is proposed for chirp management in high-speed direct modulation applications. The cascaded gratings, i.e., a tilted $\pi $ phase-shift grating followed by a normal uniform Bragg ...
Yao Zhu, Congying Feng, Yuze Wu, Yonglin Yu   +3 more
doaj   +1 more source

Efficient Light Trapping in Organic Solar Cell Using a Short-Pitched Hexagonal Array of Metallic Nanocylinders

IEEE Photonics Journal, 2016
Plasmonic nanostructures have a great potential for enhancing light absorption of organic solar cells (OSCs). Our previous work has demonstrated that light absorption for OSCs with thin active layer can be significantly increased with a 1-D short-pitched
Wenyan Wang, Ye Zhang, Ming Chen, Yuying Hao, Ting Ji, Furong Zhu, Yanxia Cui   +6 more
doaj   +1 more source

Independently Tunable Dual-Band Perfect Absorption in a Dual-Resonance Hybrid Structure Incorporating Graphene

IEEE Photonics Journal, 2021
An independently tunable dual-resonance hybrid structure incorporating graphene is proposed to achieve selective light trapping and response tuning in the visible and near-infrared band.
Shashi Zhang, Haixia Liu, Yongzhi Fang, Min Li, Hao Ding, Lijun Zhao   +5 more
doaj   +1 more source

Understanding diffraction grating behavior: including conical diffraction and Rayleigh anomalies from transmission gratings

Optical Engineering: The Journal of SPIE, 2019
. With the wide-spread availability of rigorous electromagnetic (vector) analysis codes for describing the diffraction of electromagnetic waves by specific periodic grating structures, the insight and understanding of nonparaxial parametric diffraction ...
J. Harvey, R. Pfisterer
semanticscholar   +1 more source