Chinese Optics Letters, 2006, 4 (12): 712, Published Online: Dec. 30, 2006
New method for lightning location using optical ground wire Download: 637次
测量 光纤复合架空地线 邦加球 偏振态 斯托克斯参量 230.5440 Polarization-sensitive devices 060.0060 Fiber optics and optical communications 060.2420 Fibers, polarization-maintaining 060.2330 Fiber optics communications
Abstract
A new technology of lightning location is described, which is based on detecting the state of polarization (SOP) fluctuation of the laser light in the optic ground wire (OPGW). Compared with the conventional lightning location method, the new method is more accurate, more stable, and cheaper. Theories of Stokes parameters and Poincare sphere are introduced to analyze the SOP at the lightning strike point. It can be concluded that although the initial points of SOP on the Poincare sphere are random, the SOP fluctuation generated by lightning strike can still be accurately identified by detecting the velocity of polarization motion. A new algorithm to quantify the velocity is also introduced.
Zhaoyu Tan, Zhaogu Cheng, Zhiping Zhang, Jianqiang Zhu, Feng Li. New method for lightning location using optical ground wire[J]. Chinese Optics Letters, 2006, 4(12): 712.