9B Yi, A Cruden, J R Mcdonald, et al. A Novel Bulk-glass Optical Current Transducer Having an Adjustable Multi-Ring Optical Path[A]. IEEE Instrumentation and Measurement Technology Conference[C], Ottawa, Canada, 1997.
10U Holm, H Sohlstrom, T Brogardh. Measurement System for Magneto-optic Sensor Materials[J]. J Phys. E: Sci. Instruments,1984, 17: 885-889.