Optically Tunable Polarization State of Propagating Light at 1550 nm in an Etched Single-Mode Fiber With Azo-Polymer Overlay
Optically Tunable Polarization State of Propagating Light at 1550 nm in an Etched Single-Mode Fiber With Azo-Polymer Overlay
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DOI：
10.1109/lpt.2010.2096414
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发表时间：
2011-02
影响因子：
2.6
通讯作者：
X. Tian;Xusheng Cheng;W. Qiu;Yanhua Luo;Qi-jin Zhang;B. Zhu;Gang Zou
中科院分区：
文献类型：
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作者：
X. Tian;Xusheng Cheng;W. Qiu;Yanhua Luo;Qi-jin Zhang;B. Zhu;Gang Zou
在带有偶氮聚合物覆盖层的蚀刻单模光纤（SMF）中实现了1550 nm光的光学可调谐和可旋转偏振态。SMF被氢氟酸蚀刻以进入倏逝场，然后被偶氮聚合物固定。随着435 nm偏振光的照射，偶氮聚合物发生光诱导取向，导致光纤中的双折射，并最终使1550 nm传播光的偏振态可调。通过改变435 nm偏振光的偏振方向，将1550 nm传播光的偏振状态从右旋椭圆偏振光调整为左旋椭圆偏振光。
An optically tunable and rotatable polarization state of light at 1550 nm is achieved in an etched single-mode fiber (SMF) with azo-polymer overlay. The SMF is etched by hydrofluoric acid to access the evanescent field, and then immobilized by the azo-polymer. With irradiation of 435-nm polarized light, photoinduced orientation of the azo-polymer occurs, causing birefringence in the fiber, and finally makes the polarization state of the 1550-nm propagating light tunable. Changing the polarization directions of 435-nm polarized lights, the polarization state of 1550-nm propagating light is tuned from right-handed elliptically polarized light to left-handed elliptically polarized light.