Results 51 to 60 of about 786,843 (253)

Higher-resolution wavefront sensing based on sub-wavefront information extraction

Frontiers in Physics
The limited spatial sampling rates of conventional Shack–Hartmann wavefront sensors (SHWFSs) make them unable to sense higher-order wavefront distortion.
Hongli Guan, Hongli Guan, Hongli Guan, Hongli Guan, Wang Zhao, Wang Zhao, Wang Zhao, Shuai Wang, Shuai Wang, Shuai Wang, Kangjian Yang, Kangjian Yang, Kangjian Yang, Mengmeng Zhao, Mengmeng Zhao, Mengmeng Zhao, Shenghu Liu, Shenghu Liu, Shenghu Liu, Shenghu Liu, Han Guo, Han Guo, Han Guo, Ping Yang, Ping Yang, Ping Yang   +25 more
doaj   +1 more source

Laser Self-Mixing Interferometer Based on Multiple Reflections and Phase-Modulation Technique

Photonics, 2022
An improved method combining multiple reflections with the phase-modulation technique (MR-PM) is proposed to construct a self-mixing interferometer with high accuracy.
Xiulin Wang, Liping Lv, Desheng Zhu, Hanqiao Chen, Wencai Huang   +4 more
doaj   +1 more source

Modulation Identification and Carrier Recovery System for Adaptive Modulation in Satellite Communications [PDF]

, 2005
We introduce the modulation identification technique implementing the multimode phase locked loop (PLL) in the satellite communication using adaptive modulation scheme which is a countermeasure against the rain attenuation.
Kohno, Ryuji, Morelos-Zaragoza, Robert H, Umebayashi, Kenta   +2 more
core   +1 more source

Low dose and fast grating-based x-ray phase-contrast imaging using the integrating-bucket phase modulation technique

, 2017
X-ray phase-contrast imaging has experienced rapid development over the last few decades, and in this technology, the phase modulation strategy of phase-stepping is used most widely to measure the sample's phase signal.
Gao, Kun, Han, Huajie, Tiana, Yangchao, Wali, Faiz, Wang, Shenghao, Wu, Zhao, Zhu, Peiping   +6 more
core   +1 more source

Compensation of nonlinear self-phase modulation with phase modulators

Electronics Letters, 2002
The compensation of the nonlinear self-phase modulation of a 10 Gbit/s RZ data stream with phase modulators has been experimentally demonstrated. The electrical waveform that drives the phase modulators is synthesised from the recovered 10 GHz clock and its 20 GHz harmonic.
C. Xu, L. Mollenauer, Xiang Liu
openaire   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Determination and Analysis of Line-Shape Induced Enhancement of Stimulated Brillouin Scattering in Noise Broadened, Narrow Linewidth, High Power Fiber Lasers

IEEE Photonics Journal, 2021
We investigate the origin of line-shape induced enhancement of stimulated Brillouin scattering (SBS) in narrow linewidth, noise broadened, high-power fiber lasers.
B. S. Vikram, Roopa Prakash, V. Balaswamy, V. R. Supradeepa   +3 more
doaj   +1 more source

A Novel Three-Point Modulation Technique for Fractional-N Frequency Synthesizer Applications [PDF]

, 2013
This paper presents a novel three-point modulation technique for fractional-N frequency synthesizer applications. Convention modulated fractional-N frequency synthesizers suffer from quantization noise, which degrades not only the phase noise performance
Chao, Ching-Hui, Lin, Chiu-Chin, Peng, Kang-Chun   +2 more
core   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Optimum predetection diversity receiving system Patent [PDF]

, 1967
Development of optimum pre-detection diversity combining receiving system adapted for use with amplitude modulation, phase modulation, and frequency modulation ...
Honey, R. W., Katz, L., Simas, V. R.
core   +1 more source