Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Longtao Xu"'
Publikováno v:
AIP Advances, Vol 13, Iss 2, Pp 025342-025342-13 (2023)
Cutouts are commonly found in aerospace, ships, and marine structures, which have a great influence on mechanical properties such as stress concentration, natural frequency, and structural load-bearing performance of the structure. In this study, buc
Externí odkaz:
https://doaj.org/article/14c74282885f4b6dafd9c09102f538f9
Autor:
Xian Qi, Xihan Li, Paul Rider, Weixing Fan, Hongwei Gu, Longtao Xu, Yonghua Yang, Sangwei Lu, Hua Wang, Fenyong Liu
Publikováno v:
PLoS ONE, Vol 4, Iss 3, p e4682 (2009)
The highly pathogenic avian influenza H5N1 virus can infect a variety of animals and continually poses a threat to animal and human health. While many genotypes of H5N1 virus can be found in chicken, few are associated with the infection of mammals.
Externí odkaz:
https://doaj.org/article/50a63ade868c42469d8b7a80713e3d15
Autor:
Yijin Wang, Ru Zhang, Qian Chen, Zhangwen Lei, Caiyu Shi, Yifei Pang, Shan'an Zhang, Linjie He, Longtao Xu, Jinliang Xing, Haitao Guo
Publikováno v:
International Journal of Biological Sciences; 2024, Vol. 21 Issue 11, p4297-4313, 17p
Publikováno v:
ICACI
In practical scenarios, object detection performance is largely affected by the current environment. For example, in traffic object detection scenes, object conglutination caused by the influence of light, occlusion and other negative factors brings
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0382f23efc500e44ae01ad5475f7d61
https://doi.org/10.1109/icaci49185.2020.9177826
https://doi.org/10.1109/icaci49185.2020.9177826
Publikováno v:
Journal of Lightwave Technology. 36:2783-2790
The behavior of a sampling optical phase-locked loop (OPLL) is analyzed. An equivalent time invariant system model for the sampling OPLL was derived. With the help of the model, the stability of a sampling OPLL was found to depend not only on the sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c89590d7f2097078e4b9c0159643c6c7
https://doi.org/10.1109/jlt.2018.2820732
https://doi.org/10.1109/jlt.2018.2820732
Publikováno v:
Journal of Lightwave Technology. 36:789-796
We present the analysis, design, fabrication, and measurement of the attenuating counter-propagating optical phase locked loop (ACP-OPLL) photonic integrated circuit with a virtual balanced device structure for high dynamic range RF photonic links. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66e7f45f5926c329bf58bd20c0786f53
https://doi.org/10.1109/jlt.2017.2781373
https://doi.org/10.1109/jlt.2017.2781373
Publikováno v:
Journal of Lightwave Technology. 35:3785-3790
The spurious free dynamic range (SFDR) of a direct-detection RF/photonic link is restricted by nonlinearity of the optical intensity modulation. We report a compact quantum well Mach–Zehnder (MZ) optical intensity modulator with enhanced linearity.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6793f23a7f2b0d50a04272d6d0272233
https://doi.org/10.1109/jlt.2017.2717904
https://doi.org/10.1109/jlt.2017.2717904
Publikováno v:
IEEE Photonics Technology Letters. 29:1139-1142
The first Sagnac loop coherent phase modulated RF photonic link employing an ACP-OPLL linear phase demodulator was presented. This structure demonstrated stable signal transmission over a 1-km long coherent RF photonic link. Except for optical loss o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f9404a755cb06ebc82a523e7e52b2d0
https://doi.org/10.1109/lpt.2017.2693686
https://doi.org/10.1109/lpt.2017.2693686
Publikováno v:
IEEE Photonics Technology Letters. 29:259-262
A phase modulated (PM) RF photonic link with a multiple quantum well (MQW) phase modulator transmitter and an attenuating-counter-propagating optical phase lock loop (ACP-OPLL) receiver photonic IC is presented. The nonlinearity of the MQW phase modu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e5a8b9ea6d96260974d1208520871fd
https://doi.org/10.1109/lpt.2016.2641301
https://doi.org/10.1109/lpt.2016.2641301
Publikováno v:
2019 International Topical Meeting on Microwave Photonics (MWP).
A new record spurious free dynamic range (SFDR) performance was achieved by a coherent PM RF photonic link that employed a newly developed optical phase locked loop (OPLL) photonic integrated circuit (PIC) chip. With help of the OPLL PIC, the PM RF p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a5557d31135bbefcc5555efdfc0f995
https://doi.org/10.1109/mwp.2019.8892084
https://doi.org/10.1109/mwp.2019.8892084