[1] Sato T,Takahashi G,Inul Y.Method and apparatus for optically measuring a current.European Patent Application,Appl.No:831022.10.B,Publication No:0 088 419 A1,1983
[2] Ning Y N,Chu B C B,Jackson D A.Miniature Faraday current sensor based on multiple critical angle reflections in a bulk-optic ring.Opt Lett,1991,16(24):1996~1998
[3] Rochford K B,Rose A H,Deeter M N,et al.Faraday effect current sensor with improved sensitivity-bandwidth product.Opt Lett,1994,19(22):1903~1905
[4] Wang Z P,Huang Z J,Kang C,et al.Optical current sensing element with single medium layers for high voltage applications.Optics & Laser Technology,1999,31:455~458