Tunable multichannel Photonic spin Hall effect in metal-dielectric-metal waveguide

Zhao, Li‐Ming; Zhou, Yichao

doi:10.1038/s41598-021-93517-w

Cited by 10 publications

(9 citation statements)

References 23 publications

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“…Discussion. -According to the complete control theory, those already reported [16][17][18][19][20] about the scattering in 4-channel structures can be more deeply understood. Since the circular polarized incident light contains only two sources (two polarized components), it is not the complete set of sources for a 4-channel structure.…”

Section: Applications Of the Theory -2-channel Structuresmentioning

confidence: 94%

A universal approach to complete control in multi-channel optical structures

Gao

Zhou²,

Zhao³

2022

EPL

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The photon spin Hall effect can lead to a more general question that how to control all the light waves in a muti-channel structure (so called complete control). To address this problem in general and thoroughly, a theoretical approach was established in this paper. Guided by this approach, the complete controls in several complicated structures are realized theoretically or numerically. We also represent this approach with the form of representation theory. The important works reported recently in this area were reviewed by this theory.

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Section: Applications Of the Theory -2-channel Structuresmentioning

confidence: 94%

A universal approach to complete control in multi-channel optical structures

Gao

Zhou²,

Zhao³

2022

EPL

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“…In June 2012, Yang Jun, Chen Heming and others designed a 1×4 waveguide beam splitter which introduced Y-shaped waveguides into photonic crystal directional couplers and used the transmission characteristics of high-efficiency photonic crystal waveguides to achieve beam splitting. Most importantly, this structure can achieve high light transmittance for each output branch by adjusting the dielectric column radius in the photonic crystal [6] . In 2020, Jiang DanZong proposed a light-controlled beam splitter with adjustable Y-type terahertz wave splitter based on two-dimensional photonic crystals, which achieves a beam splitting ratio of a specific wavelength by changing the light intensity [7] .…”

Section: Research Statusmentioning

confidence: 99%

Design of power beam splitter based on photonic crystal waveguide

Liu

Wu²

2023

International Conference on Optoelectronic Materials and Devices (ICOMD 2022)

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Existing power beam splitter has complex structure and is not easy to implement. The power beam splitters of 1×2 and 1×3 were designed based on two-dimensional square lattice photonic crystals. The beam splitters consist of a photonic crystal waveguide composed of gallium arsenide rods and tellurium dielectric rods defects. Defects are introduced into the self-collimated photonic crystal, and the material parameters are controlled by an applied electric field, thereby changing the beam splitting ratio and achieving tuned beam splitting. The efficiency of the 1×2 beam splitter designed by simulation analysis is the lowest, and the other efficiency is relatively high. It is confirmed that the light waves corresponding to 1200nm can be transmitted normally in the line defect, and the light waves of 1000 nm and 1400nm are only dispersed into these bandgaps. Since the propagation of light waves in these bandgaps causes energy loss, the beam splitting function cannot be achieved.

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“…According to the spin coupling theory, the incident spin determines the spin of SPP, and then the spin of SPP determines the propagation direction of SPP. Recently, it has been found that the asymmetric scattering of PSHE is caused the component wave interference (CWI) of electric or magnetic dipoles 20 – 22 . According to CWI theory, the propagation direction of SPP is determined by the incident spin, and then the spin of SPP is determined by the spin orbit locking of SPP.…”

mentioning

confidence: 99%

Unidirectional propagation of the Bloch surface wave excited by the spinning magnetic dipole in two-dimensional photonic crystal slab

Zhao

Zhou

2021

Sci Rep

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The photonic spin Hall effect (PSHE) can be realized in a photonic crystal (PC) slab, that is, the unidirectional Bloch surface wave can propagate along the surface of the PC slab under the excitation of elliptical polarized magnetic dipole. It is further proved that PSHE is caused by the interference of the component surface waves excited by the different components of the incident light, which is the so called component wave interference (CWI) theory. In addition, we also find that the spin of the surface wave oscillates periodically in space, and the oscillation period is a unit cell. In a unit cell, the average spin keeps the spin orbit locked. The results show that the spin separation can also be modulated by the position and the polarization state of the magnetic dipole.

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Tunable multichannel Photonic spin Hall effect in metal-dielectric-metal waveguide

Cited by 10 publications

References 23 publications

A universal approach to complete control in multi-channel optical structures

A universal approach to complete control in multi-channel optical structures

Design of power beam splitter based on photonic crystal waveguide

Unidirectional propagation of the Bloch surface wave excited by the spinning magnetic dipole in two-dimensional photonic crystal slab

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