Research of multi-section Lyot fiber depolarizer
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1.
Department of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China;
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2.
Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, China
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Received Date:
2014-09-29
Accepted Date:
2014-10-26
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Abstract
In order to study the performance of Lyot fiber depolarizers, 2-section, 3-section and 4-section Lyot fiber depolarizers were analyzed by means of Jones matrix. After theoretical analysis and experimental verification, the mathematical expression of the dependence of the degree of polarization on the section number of a multi-section Lyot fiber depolarizer was obtained. A conclusion was made that the degree of polarization decreased substantially with the increase of section number of a fiber depolarizer. The experiment results show that the degree of polarization of a 4-section Lyot fiber depolarizer is one quarter of a 2-section fiber depolarizer. The standard deviation decreases from 0.0951 to 0.0245. The experimental results prove the mathematical expressions are correct. The results prove the correctness of the theory and provide theoretical guidance for the actual production of multi-section Lyot depolarizers.
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