Results 31 to 40 of about 6,789,323 (309)

Measurements of the Beam-Wave Fluctuations over a 142-km Atmospheric Path [PDF]

, 2006
An optical link has been established between the Canary Islands La Palma and Tenerife. A 1064-nm transmitting laser was located on La Palma whereas a BPSK communication receiver and measurement instruments were installed in ESA's OGS on Tenerife.
Perlot, Nicolas, K. Zettl, Knapek, Markus, Zettl, Karl, H. Henniger, Giggenbach, Dirk, D. Giggenbach, Henniger, Hennes, Horwath, Joachim, J. Horwath, N. Perlot, M. Knapek   +11 more
core   +1 more source

Subwavelength Energy Transport Along a Dielectric Nanoparticle Chain in a Metal Slot

IEEE Photonics Journal, 2013
Subwavelength energy transportation along a dielectric nanoparticle chain in a metal slot is investigated. It is demonstrated that subwavelength resonance modes with nanoscale confinement could be well achieved in the proposed waveguide, free from the ...
Bing Shen, Yongqing Huang, Xiaofeng Duan, Xiaomin Ren, Xia Zhang, Qi Wang   +5 more
doaj   +1 more source

Frequency Stabilization of a Cesium Faraday Laser With a Double-Layer Vapor Cell as Frequency Reference

IEEE Photonics Journal, 2022
We implement a compact optical frequency standard at the wavelength of 852 nm by the modulation transfer spectroscopy (MTS) technique, using a Faraday laser as the local oscillator and a double-layer cesium vapor cell to provide frequency reference.
Hangbo Shi, Pengyuan Chang, Zhiyang Wang, Zijie Liu, Tiantian Shi, Jingbiao Chen   +5 more
doaj   +1 more source

Neural Successive Cancellation Polar Decoder With Tanh-Based Modified LLR Over FSO Turbulence Channel

IEEE Photonics Journal, 2020
The neural successive cancellation (NSC) decoder with tanh-based modified log-likelihood ratio (LLR) is proposed for reducing the decoding latency of polar codes over free space optical (FSO) turbulence channel.
Jiafei Fang, Meihua Bi, Shilin Xiao, Hang Yang, Zhiyu Chen, Zhiyang Liu, Weisheng Hu   +6 more
doaj   +1 more source

Compressing Turbulence Effect in FSO using New Modulation Technique

MATEC Web of Conferences, 2017
Diffusers transmitter modulation to reduce the effect of atmospheric turbulence in free space optical communication system is described in this paper.
Mohamed Nawawi Norizan, Mat Safar Anuar, Rahman Kram Abdul, Rashidi C.B.M., Mohd Nordin Junita   +4 more
doaj   +1 more source

Fosquare: A novel optical hpc interconnect network architecture based on fast optical switches with distributed optical flow control [PDF]

, 2021
Interconnecting networks adopting Fast Optical Switches (FOS) can achieve high band-width, low latency, and low power consumption. We propose and demonstrate a novel interconnecting topology based on FOS (FOSquare) with distributed fast flow control ...
Yuan, Changshun, Xiong Deng, Deng, Xiong, Chao Li, Yan, Fulong, Li, Chao, Changshun Yuan, Fulong Yan   +7 more
core   +2 more sources

CEACAM1 participation in breast cancer progression

Molecular Oncology, EarlyView.
In invasive breast cancer (BC), CEACAM1 shifts from an apical to a uniform membranous/cytoplasmic pattern, or is lost, as tumors dedifferentiate, inversely tracking the Ki‐67 proliferative index. In MCF‐7 cells, only CEACAM1‐4L suppresses proliferation, repressing cell cycle and growth factor genes.
Mykola Lyndin, Irina Kube‐Golovin, Anatolii Romaniuk, Gunther Wennemuth   +3 more
wiley   +1 more source

Real-Time Distributed Fiber Sensing Using FPGA-Accelerated Sliding-Window Correlation: From IM-DD to Coherent Detection

IEEE Photonics Journal
This paper presents and experimentally demonstrates an FPGA-accelerated correlation optical time-domain reflectometry (C-OTDR) architecture for distributed fiber sensing, spanning both intensity-modulation/direct-detection (IM-DD) and coherent dual ...
Botao Yang, Tao Zeng, Te Ke, Yimei Pan, Chen Wang, Ziye Zhong, Ziqing Liu, Ming Luo, Xi Xiao, Hanbing Li   +9 more
doaj   +1 more source

Broadband Photonic Down-Conversion Preprocessor for ADC With Arcsine Equalization

IEEE Photonics Journal, 2020
It is a challenge to convert broadband millimeter-wave signals directly with electronic analog-to-digital converters (ADCs). The photonic down-conversion preprocessor is a promising solution.
Rui Guo, Yankun Li, Chenbo Zhang, Peng Lei, Qing Yin, Xiaopeng Xie, Zhangyuan Chen   +6 more
doaj   +1 more source

Spatial biology in cancer epigenetics

Molecular Oncology, EarlyView.
Spatial epigenomics combines molecular profiling with tissue architecture to reveal how gene regulation is organized within intact tissues. In cancer, these technologies uncover the mechanisms driving tumor heterogeneity and microenvironmental interactions, opening new opportunities for biomarker discovery and precision medicine.
Eva Crespo‐García, Manel Esteller
wiley   +1 more source