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On-chip rotated polarization directional coupler fabricated by femtosecond laser direct writing

机译:由飞秒激光直接写作制造的片上旋转偏振定向耦合器

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摘要

We present a rotated polarization directional coupler (RPDC) on a photonic chip. We demonstrate a double-track approach to modify the distribution of the refractive index between adjacent tracks and form a single waveguide with an arbitrary birefringent optical axis. We construct a RPDC with the two axis-rotated waveguides coupled in a strong regime. The obtained extinction ratios on average are about 16 dB and 20 dB for the corresponding orthogonal polarizations. We perform reconstruction of the Stokes vector to test the projection performance of our RPDC, and observe the average fidelities up to 98.1% and 96.0% for the perfectly initialized states in 0 degrees and 45 degrees RPDCs, respectively. (C) 2018 Optical Society of America
机译:我们在光子芯片上呈现旋转偏振定向耦合器(RPDC)。 我们展示了一种双轨方法来修改相邻轨道之间的折射率的分布,并形成具有任意双折射光轴的单个波导。 我们用两个轴旋转波导构造一个RPDC,耦合在强大的方案中。 对于相应的正交偏振,所获得的消光比例为约16dB和20dB。 我们执行斯托克斯向量的重建,以测试我们的RPDC的投影性能,并观察0度和45度RPDC的完美初始化状态的平均保真度高达98.1%和96.0%。 (c)2018年光学学会

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  • 来源
    《Optics Letters》 |2019年第1期|共4页
  • 作者单位

    Shanghai Jiao Tong Univ Sch Phys &

    Astron State Key Lab Adv Opt Commun Syst &

    Networks Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Phys &

    Astron State Key Lab Adv Opt Commun Syst &

    Networks Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Phys &

    Astron State Key Lab Adv Opt Commun Syst &

    Networks Shanghai 200240 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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