scholarly journals Analog Radio of Fiber Link of 2-Gbaud OOK/BPSK Radio Frequency-Orbital Angular Momentum Beam Transmission over 194-km

2020 ◽  
Author(s):  
Shanguo Huang ◽  
xiyao song ◽  
Xinlu Gao ◽  
Zhennan Zheng ◽  
Zizheng Cao ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Radio Frequency ◽  
Orbital Angular Momentum ◽  
Fiber Link ◽  
Beam Transmission

scholarly journals Three‐dimensional profiling of collimated radio‐frequency orbital angular momentum beams

2020 ◽  
Vol 14 (6) ◽  
pp. 547-550
Author(s):  
Joshua K. Hamilton ◽  
Simon J. Berry ◽  
Joseph H. Spencer ◽  
Christopher R. Lawrence ◽  
Francis C. Smith ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Radio Frequency ◽  
Orbital Angular Momentum ◽  
Three Dimensional

Generating multiple orbital angular momentum vortex beams using a metasurface in radio frequency domain

2016 ◽  
Vol 108 (24) ◽  
pp. 241901 ◽  
Author(s):  
Shixing Yu ◽  
Long Li ◽  
Guangming Shi ◽  
Cheng Zhu ◽  
Yan Shi
Keyword(s):  
Angular Momentum ◽  
Radio Frequency ◽  
Frequency Domain ◽  
Orbital Angular Momentum ◽  
Vortex Beams

scholarly journals Multiplication and division of the orbital angular momentum of light with diffractive transformation optics

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Gianluca Ruffato ◽  
Michele Massari ◽  
Filippo Romanato
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Optical Element ◽  
Input Beam ◽  
Circular Sector ◽  
Optical Elements ◽  
Phase Gradient ◽  
Beam Transmission ◽  
Integer Multiplication ◽  
Optical Transformation

AbstractWe present a method to efficiently multiply or divide the orbital angular momentum (OAM) of light beams using a sequence of two optical elements. The key element is represented by an optical transformation mapping the azimuthal phase gradient of the input OAM beam onto a circular sector. By combining multiple circular-sector transformations into a single optical element, it is possible to multiply the value of the input OAM state by splitting and mapping the phase onto complementary circular sectors. Conversely, by combining multiple inverse transformations, the division of the initial OAM value is achievable by mapping distinct complementary circular sectors of the input beam into an equal number of circular phase gradients. Optical elements have been fabricated in the form of phase-only diffractive optics with high-resolution electron-beam lithography. Optical tests confirm the capability of the multiplier optics to perform integer multiplication of the input OAM, whereas the designed dividers are demonstrated to correctly split up the input beam into a complementary set of OAM beams. These elements can find applications for the multiplicative generation of higher-order OAM modes, optical information processing based on OAM beam transmission, and optical routing/switching in telecom.

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