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Spatial-Light-Modulator-Based Multichannel Data Transmission by Vortex Beams of Various Orders.
Svetlana N Khonina1,2, Sergey V Karpeev1,2, Muhammad A Butt2,3
1IPSI RAS-Branch of the FSRC "Crystallography and Photonics" RAS, 443001 Samara, Russia.
Sensors (Basel, Switzerland)
|April 30, 2021
Summary
This study presents a novel atmospheric data transmission system using vortex beams for channel separation. The proposed method enables efficient data multiplexing and demultiplexing without digital image processing, enhancing communication stability.
Area of Science:
- Optical Communications
- Information Optics
- Beam Optics
Background:
- Atmospheric optical communication systems face challenges with channel interference and data capacity.
- Vortex beams offer unique properties for multiplexing and demultiplexing optical signals.
Purpose of the Study:
- To develop and investigate an atmospheric multichannel data transmission system utilizing vortex beams.
- To demonstrate a demultiplexing method using a multichannel diffractive optical element (DOE).
Main Methods:
- Implementation of a system with two spatial light modulators (SLMs) for signal multiplexing and DOE-based demultiplexing.
- Utilizing vortex beams of various orders, including half-integer values, for channel separation.
- Investigating system stability against atmospheric interference and inter-channel crosstalk.
Main Results:
- Successful demonstration of a multichannel data transmission system with channel separation via vortex beams.
- A multichannel DOE was designed and implemented for efficient demultiplexing.
- The system showed stability against atmospheric interference, with analyzed crosstalk levels.
Conclusions:
- The proposed approach offers a viable method for atmospheric multichannel data transmission.
- The DOE-based demultiplexing technique provides a robust solution without requiring complex digital processing.
- This system has potential for enhancing free-space optical communication capabilities.
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