Polarization dependence of a graphene-optical fiber hybrid Mach-Zehnder interferometer

Li Lijun; Jia Weikang; Liu Yilin; Liu Yinming; Xu Lin; Yu Fei; Xu Tianzong; Wei Fengjuan; Gu Xingchen

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Polarization dependence of a graphene-optical fiber hybrid Mach-Zehnder interferometer

机译：石墨烯光纤混合马赫 - Zehnder干涉仪的偏振依赖性

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Graphene exhibits a particular optical polarization dependence property, which is that supporting optical polarization states of graphene can be readily altered through tuning the polarity of the imaginary part of its conductivity. The in-fiber Mach-Zehnder interferometer (MZI) possesses extremely high sensitivity to the surrounding refractive index through cladding modes. Combining graphene and the in-fiber interferometer, a graphene-optical fiber hybrid MZI is constructed. Depending on the graphene polarization dependence property, the interference wavelength of the graphene-optical fiber hybrid MZI expresses periodic drift with the in-fiber light linear polarization angle adjusting within 180 degrees. Meanwhile, drift periods corresponding to different interference wavelengths are slightly different, which is primarily due to the superposition of the polarization dependence behaviors of different cladding modes. For different light polarization states, with the in-fiber optical power increasing, the interference wavelengths and contrast intensities of the hybrid MZI transmission spectrum show a polarization independent linear blue shift and a nonlinear decrease, respectively. (C) 2019 Optical Society of America

机译：石墨烯表现出特定的光学偏振依赖性，这是石墨烯的支撑光学偏振态可以通过调谐其导电部的虚部的极性而容易地改变。通过包层模式对纤维壳管 - Zehnder干涉仪（MZI）对周围的折射率具有极高的灵敏度。结合石墨烯和纤维干涉仪，构建了石墨烯 - 光纤杂交MZI。根据石墨烯偏振依赖性特性，石墨烯 - 光纤混合MZI的干涉波长用在180度内调节的光纤光线性偏振角度的周期性漂移。同时，对应于不同干扰波长的漂移周期略有不同，这主要是由于不同包层模式的偏振依赖性行为的叠加。对于不同的光偏振状态，随着光纤光功率的增加，混合MZI透射光谱的干扰波长和对比度分别显示出偏振独立的线性蓝色偏移和非线性减小。（c）2019年光学学会

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来源
《Applied optics》 |2019年第7期|共5页
作者
Li Lijun; Jia Weikang; Liu Yilin; Liu Yinming; Xu Lin; Yu Fei; Xu Tianzong; Wei Fengjuan; Gu Xingchen;
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作者单位

Shandong Univ Sci &

Technol Coll Elect Commun &

Phys Qingdao 266590 Peoples R China;

Shandong Univ Sci &

Technol Coll Elect Commun &

Phys Qingdao 266590 Peoples R China;

Shandong Univ Sci &

Technol Coll Elect Commun &

Phys Qingdao 266590 Peoples R China;

Shandong Univ Sci &

Technol Qingdao 266590 Peoples R China;

Shandong Univ Sci &

Technol Coll Elect Commun &

Phys Qingdao 266590 Peoples R China;

Shandong Univ Sci &

Technol Coll Elect Commun &

Phys Qingdao 266590 Peoples R China;

Shandong Univ Sci &

Technol Coll Elect Engn &

Automat Qingdao 266590 Peoples R China;

Shandong Univ Sci &

Technol Coll Elect Commun &

Phys Qingdao 266590 Peoples R China;

Shandong Univ Sci &

Technol Coll Elect Commun &

Phys Qingdao 266590 Peoples R China;

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Polarization dependence of a graphene-optical fiber hybrid Mach-Zehnder interferometer

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