Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Solyman Ashrafi"'
Autor:
Zhe Zhao, Yongxiong Ren, Guodong Xie, Long Li, Yan Yan, Nisar Ahmed, Zhe Wang, Cong Liu, Asher J. Willner, Solyman Ashrafi, Alan E. Willner
Publikováno v:
APL Photonics, Vol 1, Iss 9, Pp 090802-090802-8 (2016)
We demonstrate all-optical division and multiplication of the state order ℓ for data-carrying orbital angular momentum (OAM) beams. We use linear optical transformations between log-polar and Cartesian coordinates to: (i) divide the OAM state order
Externí odkaz:
https://doaj.org/article/5eb5f6431d17405d86f6e4fdbbaab98c
Publikováno v:
GLOBECOM Workshops
Both defense and commercial 5G networks require ultra-broadband capacity and low latency for new applications. This paper is a collaborative development between Raytheon and NxGen Partners to develop a low cost and high bandwidth backhaul application
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2bbfcfefa1fa6519b14bd9eaf29ff92
https://doi.org/10.1109/gcwkshps45667.2019.9024320
https://doi.org/10.1109/gcwkshps45667.2019.9024320
Autor:
Harini Kumar, Thethnin Ei, Haohan Yao, Duncan L. MacFarlane, Solyman Ashrafi, Rashaunda Henderson, Nima Ashrafi
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 15:1947-1950
This letter introduces a method of using patch antennas to generate millimeter-wave Hermite–Gaussian (HG) beams at E-band. An HG11 beam is formed using four inset-fed microstrip patch elements arranged with a microstrip corporate feeding network. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b662cf89107ebe2ce800279d3b7fdb1
https://doi.org/10.1109/lawp.2016.2544808
https://doi.org/10.1109/lawp.2016.2544808
Publikováno v:
ECOC
The ability to separate multiplexed optical modes is assessed for three orthogonal basis sets. The results herein may assist in mode family selection for spatial division multiplexed communication systems.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9d971b739ac418383c64013ff4473a4
https://doi.org/10.1109/ecoc.2017.8345978
https://doi.org/10.1109/ecoc.2017.8345978
Autor:
Cong Liu, Zhe Wang, Alan E. Willner, Zhe Zhao, Asher J. Willner, Ahmed Almaiman, Yan Yan, Long Li, Solyman Ashrafi, Yinwen Cao, Morteza Ziyadi, Changjing Bao, Peicheng Liao, Nisar Ahmed, Guodong Xie, Yongxiong Ren, Moshe Tur
Publikováno v:
Optics letters. 42(5)
Analogous to time signals that can be composed of multiple frequency functions, we use uniquely structured orthogonal spatial modes to create different beam shapes. We tailor the spatial structure by judiciously choosing a weighted combination of mul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02ea356d1b9f645ee3157da8867d808f
https://pubmed.ncbi.nlm.nih.gov/28248350
https://pubmed.ncbi.nlm.nih.gov/28248350
Publikováno v:
2017 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS).
This paper presents pyramidal horn antennas operating at 28 GHz, which are manufactured by 3D printing technology. A printed antenna based on a WR-28 waveguide standard gain horn designed for 20 dBi gain is then metalized using two different methods.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af081664fc4885bc1de340e8744bd159
https://doi.org/10.1109/wmcas.2017.8070701
https://doi.org/10.1109/wmcas.2017.8070701
Publikováno v:
2017 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS).
This paper focuses on analyzing orbital angular momentum in radio frequency systems by studying Laguerre-Gaussian beams. A MATLAB toolkit for optics has been utilized to provide a predictive framework for generating and multiplexing signals that expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40e059ae5abf06bc78167fc4016d6d41
https://doi.org/10.1109/wmcas.2017.8070691
https://doi.org/10.1109/wmcas.2017.8070691
Autor:
Guodong Xie, Jian Wang, Andreas F. Molisch, Yan Yan, Moshe Tur, Yongxiong Ren, Solyman Ashrafi, Long Li, Alan E. Willner, Zhe Zhao
There is a continuing growth in the demand for data bandwidth, and the multiplexing of multiple independent data streams has the potential to provide the needed data capacity. One technique uses the spatial domain of an electromagnetic (EM) wave, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::739ca7989522ffe876b3af93cb5d9215
https://europepmc.org/articles/PMC5247483/
https://europepmc.org/articles/PMC5247483/
Publikováno v:
SPIE Proceedings.
We describe methods of Raman spectroscopy for resolving mono crystalline sucrose using vortex laser beam modes with circular polarization. Research up to this point has led to controversy as to whether beams carrying orbital angular momentum (OAM) ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3184709dc9ee75cc471ca75db09466e8
https://doi.org/10.1117/12.2251493
https://doi.org/10.1117/12.2251493
Autor:
Solyman Ashrafi, Nisar Ahmed, Zhe Wang, Guodong Xie, Moshe Tur, Long Li, Zhe Zhao, Haoqian Song, Cong Liu, Yan Yan, Changjing Bao, Runzhou Zhang, Kai Pang, Alan E. Willner, Yongxiong Ren
Publikováno v:
Optics letters. 42(3)
We propose and simulate the use of the unique intensity gradient of beams carrying orbital angular momentum (OAM) for tracking and localization of an object. We design a three-pixel detector structure to efficiently determine the intensity gradient o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f370b9e5fb0628ca2296eb65a5b2641
https://pubmed.ncbi.nlm.nih.gov/28146485
https://pubmed.ncbi.nlm.nih.gov/28146485