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Dual-comb polarization-multiplexing ring-cavity fiber laser for ranging applications
Optics Express
|August 13, 2025
Summary
A novel dual-comb polarization-multiplexing fiber laser offers enhanced stability for precision ranging. This robust system achieves 340 µm precision, proving valuable for metrology and LIDAR.
Area of Science:
- Optics and Photonics
- Precision Measurement
Background:
- Traditional ranging systems face limitations in stability and precision.
- Dual-comb fiber lasers offer potential for improved performance but require stable operation.
Purpose of the Study:
- To design and implement a dual-comb polarization-multiplexing ring-cavity fiber laser.
- To evaluate its performance for precision ranging applications.
Main Methods:
- Development of a dual-comb polarization-multiplexing fiber laser system within a single ring cavity.
- Characterization of laser stability, coherence time, ranging precision, and ambiguity range.
Main Results:
- The system achieved enhanced short-term and long-term stability with reduced common noise.
- Coherence was maintained for over 125 hours without external stabilization.
- A ranging precision of 340 µm was demonstrated with a 10 ms averaging time and a 3.8 m ambiguity range.
Conclusions:
- Dual-comb polarization-multiplexing systems offer a robust and cost-effective solution for precision metrology.
- The demonstrated system is suitable for applications like Light Detection and Ranging (LIDAR) and fiber-optic sensing.
