On-situ monitoring of sleet-thawing for OPGW based on long distance BOTDR
| Autor: | Wei-ming Liu, Yi-feng Zhu, Linghao Cheng, Li-ming Zhou, Lin Tian, Lin Rui |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Raman amplification
Materials science Optical fiber Ground business.industry Direct current 02 engineering and technology Condensed Matter Physics Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics 020210 optoelectronics & photonics Distance measurement law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering sense organs Electrical and Electronic Engineering Photonics Reflectometry business Remote sensing |
| Zdroj: | Optoelectronics Letters. 17:226-230 |
| ISSN: | 1993-5013 1673-1905 |
| DOI: | 10.1007/s11801-021-0067-9 |
| Popis: | With the absence of on-situ temperature monitoring of optical fiber composite overhead ground wire (OPGW) for the process of sleet-thawing, early temperature warning and safety control of direct current (DC) in sleet-thawing process is difficult. Here we propose a Brillouin optical time-domain reflectometry (BOTDR) with broadband receiving for fast measurement and with distributed Raman amplification for long distance measurement of about 100 km. A field experiment for on-situ temperature monitoring of sleet-thawing of OPGW is also reported, which shows uneven change of temperature along the OPGW. The difference between the maximum and the minimum temperature change can be greater than 40 °C. |
| Databáze: | OpenAIRE |
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