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Polarization modulation based on graphene-integrated Ex-TFG in thin-cladding fibre

机译:基于石墨烯集成的Ex-TFG的薄包层光纤偏振调制

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摘要

Summary form only given. Light modulation by means of polarization management is crucial to avoid signal fading and errors in coherent optic communications [1]. In recent years, graphene has exhibited a great potential in light modulation due to its unique interaction with the electromagnetic field, and attracted increasing attention for applications in photonics and optoelectronics. [2-4]. To provide sufficient interaction length, an optical fibre with enhanced evanescent field generated by etched or tilted fibre grating structures [5, 6] is a promising approach. In this paper, we report an integration of multi-layer graphene onto an excessively tilted fibre grating (Ex-TFG, the tilted angle of ~82°) inscribed in thin-cladding fibre, and reveal its special polarization tuning characteristics. In the hybrid waveguide of graphene-integrated thin-cladding Ex-TFG, with strong and distinctive core-to-cladding mode coupling property, the grating can provide not only an accessible evanescent field for the enhancement of the light-graphene interaction, but also two sets of polarization-dependent cladding modes. As depicted in the upper part of Fig. 1(a), we can clearly see the two waveguide attenuation peaks corresponding to the TE and TM polarization status from the bare Ex-TFG. After the graphene coating, from the lower part of Fig. 1(a), we can observe that the larger change of coupling intensity in the TE mode and more pronounced wavelength shift in the TM mode, which attests to the polarization-dependent coupling and interaction with graphene.
机译:仅提供摘要表格。通过偏振管理进行光调制对于避免相干光通信中的信号衰减和错误至关重要[1]。近年来,石墨烯由于其与电磁场的独特相互作用而在光调制方面显示出巨大的潜力,并在光子学和光电子学中的应用引起了越来越多的关注。 [2-4]。为了提供足够的相互作用长度,通过蚀刻或倾斜的光纤光栅结构[5、6]产生具有增强的渐逝场的光纤是一种很有前途的方法。在本文中,我们报告了多层石墨烯在薄包层光纤中刻画的过度倾斜的光纤光栅(Ex-TFG,〜82°的倾斜角)上的集成,并揭示了其特殊的偏振调谐特性。在石墨烯集成的薄覆层Ex-TFG的混合波导中,具有强而独特的核-覆层模式耦合特性,光栅不仅可以提供可进入的渐逝场以增强光-石墨烯的相互作用,而且还可以提供两组偏振相关的包层模式。如图1(a)的上部所示,我们可以从裸Ex-TFG清楚地看到与TE和TM极化状态相对应的两个波导衰减峰。在石墨烯涂层之后,从图1(a)的下部,我们可以观察到,TE模式下的耦合强度变化较大,而TM模式下的波长漂移更为明显,这证明了偏振相关的耦合和与石墨烯的相互作用。

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  • 来源
  • 会议地点 Munich(DE)
  • 作者单位

    MOE Key Laboratory of Space Applied Physics and Chemistry, and the Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China;

    Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, U.K.;

    Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, U.K.;

    MOE Key Laboratory of Space Applied Physics and Chemistry, and the Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi'an 710072, China;

    Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, U.K.;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Physics; Chemistry; Information technology; Photonics;

    机译:物理;化学;信息技术;光子学;;

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