Abstract
A novel, Raman amplifier-based long-distance sensing system using a combined sensing probe of an erbium-doped fiber (EDF) and a fiber Bragg grating is proposed for simultaneous measurement of temperature and strain. By recycling residual Raman pump power for generation of amplified spontaneous emission in the EDF after distributed Raman amplification in the transmission fiber, the overall system configuration was significantly simplified without requiring any additional broadband light source. A remote sensing operation of simultaneous temperature and strain measurement is obtained at a location of 50 km. High quality of sensing signals with a ∼ 11 dB signal-to-noise ratio (SNR) is readily achieved even after the 50 km transmission with distributed Raman amplification.
Original language | English |
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Article number | 208 |
Pages (from-to) | 848-851 |
Number of pages | 4 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 5855 PART II |
DOIs | |
State | Published - 2005 |
Event | 17th International Conference on Optical Fibre Sensors, OFS-17 - Bruges, Belgium Duration: 23 May 2005 → 27 May 2005 |
Keywords
- Erbium-doped fiber
- Fiber Bragg grating
- Fiber-optic sensors
- Raman amplification