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Information transmission via single-pixel coherent detection
Optics Express
|August 13, 2025
Summary
This study introduces a simple, low-cost coherent optical wireless communication (OWC) method using single-pixel detection. It enables secure data transmission by utilizing both amplitude and phase for enhanced optical communication.
Area of Science:
- Optics and Photonics
- Wireless Communication Technologies
- Information Theory
Background:
- Optical wireless communication (OWC) offers enhanced security and spectrum efficiency.
- Existing OWC systems can be complex and costly.
- Spectrum congestion necessitates innovative communication solutions.
Purpose of the Study:
- To propose a simple and low-cost coherent OWC method using single-pixel detection.
- To enable information transmission utilizing both amplitude and phase.
- To demonstrate the system's effectiveness in various OWC scenarios.
Main Methods:
- Information encoding into complex amplitude.
- Orthogonal modulation basis for sub-complex amplitude division.
- Single-pixel coherent detection with a common-path design.
Main Results:
- Successful experimental verification of coherent OWC in free-space and non-line-of-sight (NLOS) conditions.
- Demonstrated multi-user transmission capability over 10-meter distances.
- Achieved stable and simple system operation.
Conclusions:
- The proposed single-pixel coherent detection method offers a viable approach for secure and efficient OWC.
- This technique is promising for short-range optical wireless communication applications.
- The system's simplicity and cost-effectiveness make it attractive for practical deployment.
