Photonic probing of radio waves for k-space tomography

被引:21
|
作者
Murakowski, Janusz [1 ]
Schneider, Garrett J. [1 ]
Shi, Shouyuan [1 ]
Schuetz, Christopher A. [2 ]
Prather, Dennis W. [1 ]
机构
[1] Univ Delaware, Elect & Comp Engn Dept, Newark, DE 19716 USA
[2] Phase Sensit Innovat Inc, 51 East Main St, Newark, DE 19711 USA
来源
OPTICS EXPRESS | 2017年 / 25卷 / 14期
关键词
3-DIMENSIONAL RECONSTRUCTION; IMAGE-RECONSTRUCTION; PERFORMANCE; ALGORITHMS; FIBER; ART;
D O I
10.1364/OE.25.015746
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We harness coherent optical processing to simultaneously sense the angle of arrival and the frequency of radio waves. Signals captured by a distributed antenna array are up-converted to optical domain using electro-optic modulators coupled to individual antennas. Employing a common laser source to feed all the modulators ensures spatially coherent up-conversion of radio-frequency (RF) waves to optical beams carried by optical fibers. Fiber-length dispersion extends the spatial aperture of the distributed antenna array into the temporal dimension. The interference of beams emanating from the fibers is captured by a CCD and used to computationally reconstruct RF waves in k-space. (C) 2017 Optical Society of America
引用
收藏
页码:15746 / 15759
页数:14
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