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Measurement of the beat length in high-birefringent optical fiber by way of magnetooptic modulation

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2 Author(s)
Peng-Gang Zhang ; Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada ; Irvine-Halliday, D.

One of the most important parameters about high-birefringent optical fiber is the beat length. Because of its shortness and periodicity, the measurement of the beat length Is very critical. Here, a highly accurate measurement method that relies on magnetooptic modulation techniques is proposed, and the theoretical analysis and discussion about the measurement theories and the instrument construction are given in detail. Finally, the construction of the beat length measurement instrument based on this novel method is described and several kinds of high-birefringent optical fiber samples are measured. The beat-length resolution of this instrument is better than 0.01 mm, and the final measuring results are not influenced by the external interference on the fiber or the status of the placement of the optical fiber

Published in:

Lightwave Technology, Journal of  (Volume:12 ,  Issue: 4 )