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

页码：15746 / 15759

页数：14

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