Výsledky vyhledávání - "Qin, Shiqiao"

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Instantaneous optical singularities and duality-protected dark directions

Autor: Wen, Chunchao, Zhang, Jianfa, Zhang, Chaofan, Qin, Shiqiao, Zhu, Zhihong, Liu, Wei

Electromagnetic waves are described by not only polarization ellipses but also cyclically rotating vectors tracing out them. The corresponding fields are respectively directionless steady line fields and directional instantaneous vector fields. Here

Externí odkaz: http://arxiv.org/abs/2406.06132

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Intrinsic polarization conversion and avoided-mode crossing in X-cut lithium niobate microrings

Autor: Tan, Zelin, Zhang, Jianfa, Zhu, Zhihong, Chen, Wei, Shao, Zhengzheng, Liu, Ken, Qin, Shiqiao

Compared with well-developed free space polarization converters, polarization conversion between TE and TM modes in waveguide is generally considered to be caused by shape birefringence, like curvature, morphology of waveguide cross section and scatt

Externí odkaz: http://arxiv.org/abs/2403.06374

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Magneto-chiral backscatterings by rotationally symmetric nonreciprocal structures

Autor: Wen, Chunchao, Zhang, Jianfa, Qin, Shiqiao, Zhu, Zhihong, Liu, Wei

It was proved that the joint operation of electromagnetic reciprocity and $n$-fold ($n\geq3$) rotational symmetry would secure arbitrary polarization-independent backscattering efficiency [Phys. Rev. B \textbf{103}, 045422 (2021)]. Here we remove the

Externí odkaz: http://arxiv.org/abs/2312.15580

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Spatio-Temporal Nonlinear Theory in Birefringent Microrings

Autor: Tan, Zelin, Chen, Xingqiao, Liu, Ning, Xu, Jipeng, Zhang, Jianfa, Zhu, Zhihong, Liu, Ken, Qin, Shiqiao

Frequency-dependent nonlinear process in microresonators is widely acknowledged, but there is no theory available to calculate the conversion efficiency for each resonance of the ring, except for the phase-matching one. Similarly for azimuth-dependen

Externí odkaz: http://arxiv.org/abs/2311.17424

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Momentum-space Scattering Extremizations

Autor: Wen, Chunchao, Zhang, Jianfa, Qin, Shiqiao, Zhu, Zhihong, Liu, Wei

Studies into scatterings of photonic structures have been so far overwhelmingly focused on their dependencies on the spatial and spectral morphologies of the incident waves. In contrast, the evolution of scattering properties through another paramete

Externí odkaz: http://arxiv.org/abs/2305.10831

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