7ZHANG P G,HALLIDAY D I.Measurement of the beat length in high birefringent optical fiber by way of magnetooptic modulation[J].J Lightwave Technol,1994,12(4):597-602.
8BROWN C S,STONE F T.Birefringence Measurement of Single-Mode Fibers Using the Polarization Shuttle Pulse Technique[J].J Lightwave Technol,1986,4(1):30-32
9ZHOU K.,NGO N Q,TJIN S C,et al.A simple Sagnac interferometric technique for measureing the beat length of linearly birefringent fibers[J].Optics Communication.2004(231):187-190
