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Polarization-Multiplexed Chaotic LiDAR Based on a VCSEL with Delayed Orthogonal Feedback
Tao Wang1, Zhibo Li1, Hui Shen1
1State Key Laboratory of Integrated Service Networks, School of Telecommunications Engineering, Xidian University, Xi'an 710071, China.
Sensors (Basel, Switzerland)
|August 13, 2026
Summary
We developed a novel chaotic Light Detection and Ranging (LiDAR) system using a VCSEL laser. This system offers precise distance measurement and is resilient to interference, paving the way for advanced robotics and autonomous systems.
Area of Science:
- Optics and Photonics
- Laser Systems
- Metrology
Background:
- Light Detection and Ranging (LiDAR) systems are crucial for accurate distance and velocity measurements.
- Current LiDAR systems often face challenges in balancing performance, robustness, and simplicity for widespread adoption.
Purpose of the Study:
- To propose and demonstrate a novel chaotic LiDAR system.
- To achieve high-performance, robust, and simple LiDAR solutions.
- To explore polarization-multiplexed dynamics for LiDAR applications.
Main Methods:
- Utilized a semiconductor Vertical-Cavity Surface-Emitting Laser (VCSEL) with delayed orthogonal polarization feedback.
- Exploited mode competition between transverse electric (TE) and transverse magnetic (TM) modes for polarization-multiplexed dynamics.
- Employed a half-wave (λ/2) plate and laser injection current for system tuning.
Main Results:
- Demonstrated precise linear ranging with a resolution of approximately 1.2 cm.
- Achieved a compact, all-in-one source eliminating the need for external modulators or complex coherent detection.
- Showcased inherent resistance to external optical interference, maintaining accuracy in noisy environments.
Conclusions:
- The proposed chaotic LiDAR system offers a tunable, interference-resilient platform.
- This technology presents a promising pathway toward low-cost, high-performance LiDAR.
- Potential applications include autonomous navigation, robotics, and industrial metrology.
