scholarly journals Encoding complex amplitude information onto phase-only diffractive optical elements using binary phase Nyquist gratings

OSA Continuum ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 896
Author(s):  
Jeffrey A. Davis ◽  
Everett D. Wolfe ◽  
Ignacio Moreno ◽  
Don M. Cottrell
Keyword(s):  
Complex Amplitude ◽  
Diffractive Optical Elements ◽  
Optical Elements ◽  
Binary Phase

Generation of Laguerre–Gaussian LGp0 beams using binary phase diffractive optical elements

2014 ◽  
Vol 53 (21) ◽  
pp. 4761 ◽  
Author(s):  
Abdelhalim Bencheikh ◽  
Michael Fromager ◽  
Kamel Aït Ameur
Keyword(s):  
Diffractive Optical Elements ◽  
Optical Elements ◽  
Binary Phase

Precision measurement with visual feedback using binary phase diffractive optical elements

2006 ◽  
Vol 31 (8) ◽  
pp. 1053 ◽  
Author(s):  
Edward Buckley ◽  
Adrian Cable ◽  
Tim Wilkinson ◽  
Nic Lawrence
Keyword(s):  
Visual Feedback ◽  
Precision Measurement ◽  
Diffractive Optical Elements ◽  
Optical Elements ◽  
Binary Phase

scholarly journals High-resolution interference microscopy of binary phase diffractive optical elements

OSA Continuum ◽  
2019 ◽  
Vol 2 (9) ◽  
pp. 2496
Author(s):  
Michail Symeonidis ◽  
Wataru Nakagawa ◽  
Dong Cheon Kim ◽  
Andreas Hermerschmidt ◽  
Toralf Scharf
Keyword(s):  
High Resolution ◽  
Interference Microscopy ◽  
Diffractive Optical Elements ◽  
Optical Elements ◽  
Binary Phase

Extended focus depth for Gaussian beam using binary phase diffractive optical elements

2018 ◽  
Vol 57 (8) ◽  
pp. 1899 ◽  
Author(s):  
Bencheikh Abdelhalim ◽  
Michael Fromager ◽  
Kamel Aït-Ameur
Keyword(s):  
Gaussian Beam ◽  
Diffractive Optical Elements ◽  
Optical Elements ◽  
Binary Phase ◽  
Focus Depth

scholarly journals Frequency Division Multiplexing of Terahertz Waves Realized by Diffractive Optical Elements

2021 ◽  
Vol 11 (14) ◽  
pp. 6246
Author(s):  
Paweł Komorowski ◽  
Patrycja Czerwińska ◽  
Mateusz Kaluza ◽  
Mateusz Surma ◽  
Przemysław Zagrajek ◽  
...  
Keyword(s):  
Frequency Division Multiplexing ◽  
Diffractive Optical Elements ◽  
Frequency Division ◽  
Terahertz Waves ◽  
Optical Elements ◽  
Telecommunication Systems ◽  
Wide Range ◽  
The Future ◽  
Wireless Telecommunication ◽  
Finite Distance

Recently, one of the most commonly discussed applications of terahertz radiation is wireless telecommunication. It is believed that the future 6G systems will utilize this frequency range. Although the exact technology of future telecommunication systems is not yet known, it is certain that methods for increasing their bandwidth should be investigated in advance. In this paper, we present the diffractive optical elements for the frequency division multiplexing of terahertz waves. The structures have been designed as a combination of a binary phase grating and a converging diffractive lens. The grating allows for differentiating the frequencies, while the lens assures separation and focusing at the finite distance. Designed structures have been manufactured from polyamide PA12 using the SLS 3D printer and verified experimentally. Simulations and experimental results are shown for different focal lengths. Moreover, parallel data transmission is shown for two channels of different carrier frequencies propagating in the same optical path. The designed structure allowed for detecting both signals independently without observable crosstalk. The proposed diffractive elements can work in a wide range of terahertz and sub-terahertz frequencies, depending on the design assumptions. Therefore, they can be considered as an appealing solution, regardless of the band finally used by the future telecommunication systems.

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