Results 61 to 70 of about 465,453 (325)

Polarization compensator for optical communications [PDF]

, 1976
An optical data communication system is provided whereby two orthogonal polarization states of a light beam carrier correspond to digital states. In such a system, automatic polarization compensation is provided by applying a dither modulating voltage to
Abshire, J. B., Fitzmaurice, M. W.
core   +1 more source

Using In Situ TEM to Understand the Surfaces of Electrocatalysts at Reaction Conditions: Single‐Atoms to Nanoparticles

Advanced Functional Materials, EarlyView.
This review summarizes recent advances in closed‐cell in situ TEM strategies for accurate determination of the activity and stability of single‐atom catalyst systems during operation. Operando conditions causing dynamic changes of SAC systems are highlighted and we explain why ensemble average‐based optical techniques may benefit from the technological
Martin Ek, Soshan Cheong, Julie Cairney, Richard D. Tilley, Ingemar Persson   +4 more
wiley   +1 more source

Transmission matrix of a uniaxial optically active crystal platelet

, 2005
Expressions corresponding to the transmission of a uniaxial optically active crystal platelet are provided for an optical axis parallel and perpendicular to the plane of interface.
Bassiri, Birss, Chou, Condon, F. Zomer, Gomez, Graham, Graham, Kushnir, Miteva, Miteva, Nye, Pietrasszkiewicz, Poirson, Raab, Scierski, Silverman, Sosman, Wen, Yariv, Yeh, Yeh, Zander   +22 more
core   +3 more sources

Quantum optical waveform conversion [PDF]

, 2010
Currently proposed architectures for long-distance quantum communication rely on networks of quantum processors connected by optical communications channels [1,2].
A. P. Vandevender, D. Kielpinski, H. M. Wiseman, J. F. Corney   +3 more
core   +2 more sources

Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes

Advanced Functional Materials, EarlyView.
This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin, Wenhao Wang, Thomas Caiwei Tan, Abhishek Kumar, Ridong Jia, Nikhil Navaratna, Ranjan Singh, Lijuan Xie   +7 more
wiley   +1 more source

Experiment on VCSEL Composed of Special Structure DBRs in Integrated Optoelectronic Chip

IEEE Access, 2019
In this paper, we have demonstrated the feasibility of the proposed integrated chip by the experiments on its laser part of Vertical-cavity Surface-emitting Laser (VCSEL).
Kai Liu, Qi Wei, Junwei Luo, Xiaomin Ren, Yongqing Huang, Xiaofeng Duan, Qi Wang, Shiwei Cai, Yuan Zhong   +8 more
doaj   +1 more source

Photonic Crystal and Photonic Crystal Fibers Communications [PDF]

, 2016
The development of all optical communications could benefit from the index guiding photonic crystal fibers. In communication the photonic crystal fibers could provide many new solutions.
Muse, H. A. (Haider)
core   +2 more sources

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

Advanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To, Jiachen Du, Cyril Decroze, Laure Huitema, Aurelian Crunteanu, Hang Wong   +5 more
wiley   +1 more source

Numerical Study of an Efficient Solar Absorber Consisting of Metal Nanoparticles

Nanoscale Research Letters, 2017
We propose and theoretically investigate an efficient solar light absorber based on a multilayer structure consisting of tungsten nanoparticle layers and SiO2 layers. According to our calculation, average absorbance over 94% is achieved in the wavelength
Chang Liu, De Zhang, Yumin Liu, Dong Wu, Lei Chen, Rui Ma, Zhongyuan Yu, Li Yu, Han Ye   +8 more
doaj   +1 more source

New Combinatorial Construction Techniques for Low-Density Parity-Check Codes and Systematic Repeat-Accumulate Codes [PDF]

, 2012
This paper presents several new construction techniques for low-density parity-check (LDPC) and systematic repeat-accumulate (RA) codes. Based on specific classes of combinatorial designs, the improved code design focuses on high-rate structured codes ...
Gruner, Alexander, Huber, Michael
core   +1 more source