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The compensation of long‐term temperature induced error in the all fiber current transformer through optimizing initial phase delay in λ/4 wave plate
Author(s) -
Hu Haoliang,
Huang Junchang,
Xia Li,
Yan Zhenlin,
Peng Shen
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31793
Subject(s) - verdet constant , materials science , transformer , optical fiber , optics , current transformer , faraday effect , physics , electrical engineering , voltage , engineering , magnetic field , quantum mechanics
The long‐term temperature induced errors caused by fiber λ/4 wave plate and the Verdet constant of sensing fiber in the all fiber current transformer (FOCT) are theoretically analyzed. A temperature related response of fiber λ/4 wave plate is adopted to compensate for the change caused by temperature related Verdet constant through choosing appropriate initial phase retardation of the λ/4 wave plate. The experimental results show high temperature‐cycle accuracy in this kind of FOCT with relative error within 0.6%.