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Non-local effects in a Brillouin optical frequency-domain analysis system
Optics Express
|August 13, 2025
Summary
This study investigates non-local effects in Brillouin optical frequency-domain analysis (BOFDA) sensors. We provide guidelines to minimize these effects, ensuring accurate measurements in distributed Brillouin sensing.
Area of Science:
- Optics and Photonics
- Fiber Optic Sensing
- Nonlinear Optics
Background:
- Systematic errors in distributed Brillouin sensors are well-documented, particularly those arising from energy transfer between pump and probe waves in pulsed schemes.
- Previous research focused on pulsed pump waves, establishing control measures for these specific systematic errors.
Purpose of the Study:
- To numerically and experimentally analyze the influence of non-local effects in Brillouin optical frequency-domain analysis (BOFDA) sensors.
- To understand how pump and probe wave powers affect non-local effects in continuous interaction systems.
- To develop practical guidelines for mitigating non-local effects in BOFDA schemes.
Main Methods:
- Numerical simulations of BOFDA sensor performance.
- Experimental validation of simulation results.
- Analysis of single-sideband and double-sideband BOFDA configurations.
Main Results:
- Non-local effects in BOFDA sensors are dependent on the power of both pump and probe waves.
- The continuous interaction in BOFDA schemes presents unique challenges compared to pulsed systems.
- Identified key parameters influencing non-local effect magnitude.
Conclusions:
- Non-local effects can be effectively managed in BOFDA sensors.
- Simple guidelines derived from this analysis enable negligible impact of non-local effects.
- This research contributes to more accurate distributed Brillouin sensing.
