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Reduced thermal sensitivity of hybrid air-core photonic band-gap fiber ring resonator

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【作者】 冯丽爽王锴焦洪臣王俊杰刘丹妮杨照华

【Author】 FENG Li-shuang;WANG Kai;JIAO Hong-chen;WANG Jun-jie;LIU Dan-ni;YANG Zhao-hua;Key Laboratory of Precision Opto-Mechatronics Technology of the Education Ministry of China, Science and Technology on Inertial Laboratory, Beihang University;

【机构】 Key Laboratory of Precision Opto-Mechatronics Technology of the Education Ministry of China, Science and Technology on Inertial Laboratory, Beihang University

【摘要】 A novel hybrid air-core photonic band-gap fiber(PBF) ring resonator with twin 90° polarization-axis rotated splices is proposed and demonstrated. Frist, we measure the temperature dependent birefringence coefficient of air-core PBF and Panda fiber. Experimental results show that the relative temperature dependent birefringence coefficient of air-core PBF is 1.42×10-8/℃, which is typically 16 times less than that of Panda fiber. Then, we extract the geometry profile of air-core PBF from scanning electron microscope(SEM) images. Numerical modal is built to distinguish the fast axis and slow axis in the fiber. By precisely setting the length difference in air-core PBF and Panda fiber between two 90° polarization-axis rotated splicing points, the hybrid air-core PBF ring resonator is constructed, and the finesse of the resonator is 8.4. Environmental birefringence variation induced by temperature change can be well compensated, and experimental results show an 18-fold reduction in thermal sensitivity, compared with resonator with twin 0° polarization-axis rotated splices.

【Abstract】 A novel hybrid air-core photonic band-gap fiber(PBF) ring resonator with twin 90° polarization-axis rotated splices is proposed and demonstrated. Frist, we measure the temperature dependent birefringence coefficient of air-core PBF and Panda fiber. Experimental results show that the relative temperature dependent birefringence coefficient of air-core PBF is 1.42×10-8/℃, which is typically 16 times less than that of Panda fiber. Then, we extract the geometry profile of air-core PBF from scanning electron microscope(SEM) images. Numerical modal is built to distinguish the fast axis and slow axis in the fiber. By precisely setting the length difference in air-core PBF and Panda fiber between two 90° polarization-axis rotated splicing points, the hybrid air-core PBF ring resonator is constructed, and the finesse of the resonator is 8.4. Environmental birefringence variation induced by temperature change can be well compensated, and experimental results show an 18-fold reduction in thermal sensitivity, compared with resonator with twin 0° polarization-axis rotated splices.

【基金】 supported by the National Natural Science Foundation of China(No.61473022)
  • 【文献出处】 Optoelectronics Letters ,光电子快报(英文版) , 编辑部邮箱 ,2018年01期
  • 【分类号】TN253
  • 【下载频次】46
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