150 km φ-OTDR sensor based on erbium and Raman amplifiers
| Autor: | Abdollah Malakzadeh, Mohsen Mansoursamaei, Rasoul Pashaie |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry chemistry.chemical_element 02 engineering and technology Optical time-domain reflectometer 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Erbium symbols.namesake Optical fiber amplifiers Raman amplifiers chemistry Fiber optic sensor 0103 physical sciences symbols Optoelectronics Electrical and Electronic Engineering Rayleigh scattering 0210 nano-technology business Raman spectroscopy Reflectometry |
| Zdroj: | Optical and Quantum Electronics. 52 |
| ISSN: | 1572-817X 0306-8919 |
| DOI: | 10.1007/s11082-020-02439-w |
| Popis: | Extending the sensing range for monitoring the railways, pipelines, borders, long structures, etc., has great importance in distributed fiber optic sensors development. Phase-sensitive optical time-domain reflectometry (φ-OTDR) sensors are the best candidate for this purpose. Optical fiber amplifiers in φ-OTDR sensors have increased the sensing range. A φ-OTDR sensor using combination of Erbium and Raman amplifiers has been demonstrated with a sensing range of 128 km. In this paper, we presented a disturbance monitoring up to 150 km utilizing Erbium and bi-directional Raman amplifications. In the proposed sensor, disturbances at 30, 70 and 120 km distances are applied and Rayleigh backscattered signals are investigated. |
| Databáze: | OpenAIRE |
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