Fiber laser for application in phase sensitive optical time domain reflectometry
| Autor: | Vasily V. Spirin, Dmitry A. Korobko, C. A. López-Mercado, Andrei A. Fotiadi, J. L. Bueno Escobedo, Patrice Mégret, I. O. Zolotovskiy |
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| Rok vydání: | 2018 |
| Předmět: |
Distributed feedback laser
Materials science business.industry Physics::Optics 02 engineering and technology Optical time-domain reflectometer 021001 nanoscience & nanotechnology Laser 01 natural sciences law.invention 010309 optics Resonator Laser linewidth Optics law Fiber laser 0103 physical sciences Physics::Atomic Physics Time domain 0210 nano-technology business Reflectometry |
| Zdroj: | Fiber Lasers XV: Technology and Systems. |
| DOI: | 10.1117/12.2288632 |
| Popis: | We have presented fiber laser configuration with an injection locked DFB (IL-DFB) laser for application in phase sensitive optical time domain reflectometry (φ-OTDR). A low-loss fiber optical ring resonator (FORR) is used as a high finesse filter for the self-injection locking of the DFB laser. We have used IL-DFB laser configuration for detection and localization of the vibrations in phase sensitive OTDR system. By applying moving differential processing algorithm for the Rayleigh backscattering traces we demonstrate accurate localization of the vibrations with a frequency ~50 Hz at a distance about 10 km with the same signal to noise ratio that is achievable with an ultra-narrow linewidth OEwaves laser (OE4020-155000-PA-00). |
| Databáze: | OpenAIRE |
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