Results 31 to 40 of about 7,545,238 (204)

Self-Mixing Demodulation for Coherent Phase-Sensitive OTDR System

Sensors, 2016
Phase-sensitive optical time domain reflectometry (Ф-OTDR) attracts much attention due to its capability of telling the type and position of an intrusion simultaneously.
Haijun He, Li-Yang Shao, Zonglei Li, Zhiyong Zhang, Xihua Zou, Bin Luo, Wei Pan, Lianshan Yan   +7 more
doaj   +1 more source

High-Sensitivity Gas Detection with Air-Lasing-Assisted Coherent Raman Spectroscopy

Ultrafast Science, 2022
Remote or standoff detection of greenhouse gases, air pollutants, and biological agents with innovative ultrafast laser technology attracts growing interests in recent years.
Zhihao Zhang, Fangbo Zhang, Bo Xu, Hongqiang Xie, Botao Fu, Xu Lu, Ning Zhang, Shupeng Yu, Jinping Yao, Ya Cheng, Zhizhan Xu   +10 more
doaj   +1 more source

Airborne direct-detection and coherent wind lidar measurements along the east coast of Greenland in 2009 supporting ESA’s Aeolus mission [PDF]

, 2011
The Aeolus mission of the European Space Agency (ESA) will send the first wind lidar to space to fulfill the utmost need for global wind profile observations.
Witschas, Benjamin, Uwe Marksteiner, Stephan Rahm, Reitebuch, Oliver, Marksteiner, Uwe, Rahm, Stephan, Ines Nikolaus, Benjamin Witschas, Lemmerz, Christian, Oliver Reitebuch, Nikolaus, Ines, Christian Lemmerz   +11 more
core   +1 more source

Injection locking in an optomechanical coherent phonon source

Nanophotonics, 2021
Spontaneous locking of the phase of a coherent phonon source to an external reference is demonstrated in a deeply sideband-unresolved optomechanical system.
Arregui Guillermo, Colombano Martín F., Maire Jeremie, Pitanti Alessandro, Capuj Néstor E., Griol Amadeu, Martínez Alejandro, Sotomayor-Torres Clivia M., Navarro-Urrios Daniel   +8 more
doaj   +1 more source

MDM-TDM PON Utilizing Self-Coherent Detection-Based OLT and RSOA-Based ONU for High Power Budget

IEEE Photonics Journal, 2016
A cost-effective mode-division-multiplexing and time-division-multiplexing passive optical network (MDM-TDM PON) utilizing a self-coherent detection for upstream signal at optical line terminal (OLT) and a high-gain reflective semiconductor optical ...
Yuanxiang Chen, Juhao Li, Peng Zhou, Paikun Zhu, Yu Tian, Zhongying Wu, Jinglong Zhu, Ke Liu, Dawei Ge, Jingbiao Chen, Yongqi He, Zhangyuan Chen   +11 more
doaj   +1 more source

Self-coherent detection for optical OFDM via polarization diversity

OSA Continuum, 2019
An improved self-coherent digital-signal-processing-based optical receiver that utilizes polarization diversity is presented and analyzed. It demonstrates that coherent performance can be approached by employing field reconstruction on differential-phase detection and judicious digital signal processing.
Omer Onn, Ofer Amrani
openaire   +1 more source

Trends and enabling technologies on high-speed metro and short-reach optical transmission systems

Dianxin kexue, 2019
The optical fiber communication network is the important infrastructure for the modern information society.Thanks to the reduction of fiber loss,the improvement of transceiver devices by electro-optical-electrical conversion,the development of modulation
Lei ZHANG, Yixiao ZHU, Fan ZHANG, Zhangyuan CHEN   +3 more
doaj   +2 more sources

Speckle correction in polychromatic light with the self-coherent camera for the direct detection of exoplanets [PDF]

SPIE Proceedings, 2013
Proceedings of the SPIE, Volume 8864, id. 88640N 9 pp. (2013)
Mazoyer, J., Galicher, Raphaël, Baudoz, Pierre, Rousset, Gérard   +3 more
openaire   +2 more sources

Self-Directed Learning [PDF]

, 2021
This book on self-directed learning (SDL) is devoted to original academic scholarship within the field of education, and is the 6th volume in the North-West University (NWU) SDL book series. In this book the authors explore how self-directed learning can
Mzuza, Maureen K., Bailey, Roxanne, du Toit-Brits, Charlene, Sebotsa, Tswakae, Kriek, Jeanne, Olivier, Jako, Fleisher, Steven C., Mahlaba, Sfiso C., Wirth, Karl R., Bergamin, Per, Dhakulkar, Amit, Nuhfer, Edward B., Dudu, Washington T., Jagals, Divan, Sebatana, Motlhale J., Watson, Rachel, Chahine, Iman C., Blignaut, Henry, de Beer, Josef   +18 more
core   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source