157km BOTDA with pulse coding and image processing
| Autor: | Naitian Xue, Bin Zhang, Li Zhang, Xianyang Qian, Song Wang, Yunjiang Rao, Zinan Wang, Wei Sun |
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| Rok vydání: | 2016 |
| Předmět: |
Spectrum analyzer
Materials science business.industry Physics::Optics Image processing 02 engineering and technology Non-local means Laser 01 natural sciences law.invention 010309 optics symbols.namesake 020210 optoelectronics & photonics Optics law Fiber laser 0103 physical sciences 0202 electrical engineering electronic engineering information engineering symbols business Raman spectroscopy Image resolution Diode |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | A repeater-less Brillouin optical time-domain analyzer (BOTDA) with 157.68km sensing range is demonstrated, using the combination of random fiber laser Raman pumping and low-noise laser-diode-Raman pumping. With optical pulse coding (OPC) and Non Local Means (NLM) image processing, temperature sensing with ±0.70°C uncertainty and 8m spatial resolution is experimentally demonstrated. The image processing approach has been proved to be compatible with OPC, and it further increases the figure-of-merit (FoM) of the system by 57%. |
| Databáze: | OpenAIRE |
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