Polarization State Evolution in Fibre Polarization Transformer Influenced by Phase Difference
Polarization State Evolution in Fibre Polarization Transformer Influenced by Phase Difference
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DOI：
10.1088/0256-307x/24/7/050
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发表时间：
2007-07
影响因子：
3.5
通讯作者：
Shi Zhidong;Ji Minning;Bao Huan-huan
中科院分区：
文献类型：
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作者：
Shi Zhidong;Ji Minning;Bao Huan-huan
根据可旋双折射光纤偏振Transformer（FPT）的本征结构，采用级联差分相位延迟器模型，计算了偏振变换光纤沿着逐点的琼斯矢量。这是第一次使用这种简洁的方法来研究相位差对这种特殊光纤组件内部偏振态（SOP）演化的影响。计算了偏振态的消光比和取向角，给出了从慢旋端的线偏振光到快旋端的圆偏振光以及从快旋端的圆偏振光到线偏振光的演化过程。讨论了相位差对偏振转换性能的影响，为FPT组件的设计和测试提供了参考。
In accordance with the intrinsic structure of controllably-spun birefringent-fibre-based fibre polarization transformer (FPT), the Jones vector is calculated from point to point along the polarization transforming fibre by the cascade differential phase retarder model. It is the first time using this concise method to examine the phase-difference effect on the evolution of state of polarization (SOP) inside this special fibre component. Both the extinction ratio and orientation angle of SOP are calculated to give out a whole evolution history from linear polarization light at the slow spun end into circular polarization light at the fast spun end, and vice versa. The influence of phase-difference is discussed on the polarization transforming performance and further referential conclusion is provided for design and test of the FPT component.