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Ultralong 250 km remote sensor system based on a fiber loop mirror interrogated by an optical time-domain
M Bravo1, J M Baptista, J L Santos
1Departamento Ingeniería Eléctrica y Electrónica-Universidad Pública de Navarra, Pamplona, Spain. mikel.bravo@unavarra.es
Optics Letters
|October 18, 2011
Summary
A novel fiber loop mirror system enables ultralong remote displacement sensing up to 253 km. This fiber optic sensor system achieves high signal-to-noise ratio without optical amplification.
Area of Science:
- Optoelectronics
- Fiber optic sensing
- Metrology
Background:
- Ultralong distance sensing presents significant challenges in maintaining signal integrity.
- Traditional remote sensing systems often require optical amplification, increasing complexity and cost.
Purpose of the Study:
- To propose and demonstrate a 253 km ultralong remote displacement sensor system.
- To enhance signal-to-noise ratio for remote fiber optic sensing applications.
Main Methods:
- Utilizing a fiber loop mirror interrogated by a commercial optical time-domain reflectometer.
- Incorporating a long period grating within the fiber loop mirror to detect displacement.
Main Results:
- Successfully demonstrated a 253 km ultralong remote displacement sensor system.
- Achieved a high signal-to-noise ratio, enabling remote interrogation without optical amplification.
Conclusions:
- The proposed fiber loop mirror system is effective for ultralong remote displacement sensing.
- This technology offers a cost-effective and efficient solution for long-distance monitoring.
