Embedded dual-layered dielectric slit arrays under second Bragg incidence for 1×3 splitting field propagation

Gao, Chenhao; Wang, Bo; Fang, Jimin; Fu, Chen; Wen, Kunhua; Meng, Ziming; Nie, Zhaogang; Xing, Xiangjun; Chen, Li; Liu, Liang; Zhou, Jinyun

doi:10.1016/j.ijleo.2019.163741

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…Lima et al reported a 1D grating based on Bragg incidence at 633 nm, enabling the return of TE-polarized light at −1 diffraction order and the reflection of TM-polarized light at 0 diffraction order [13]. 1D grating can find applications as five-splitting grating [14], nine-port beam splitter [15,16] and so forth [17][18][19][20][21]. However, the performance limitation on 1D grating-based beam splitters hinds their application in scenarios of 2D beam-coupled system and spatial imaging.…”

Section: Introductionmentioning

confidence: 99%

High-efficiency polarization-selective two-dimensional diffraction gratings based on silver cuboid arrays

Zou,

Fang,

Liu

et al. 2024

Phys. Scr.

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A two-dimensional (2D) diffraction grating based on silver cuboid arrays is demonstrated. With the structural optimization by three-dimensional (3D) finite-difference time-domain method, the proposed grating exhibits favorable polarization selectivity. At wavelength 1550 nm, high diffraction efficiency and polarization correlation can be realized in the case of two-port output ((0, ±1) or (±1, 0)) under TE polarization, as well as five-port output ((0, 0), (0, ±1) and (±1, 0)) under TM polarization. Under the two-port output state, the diffraction efficiency is nearly 48% with the extinction ratio of 16.44 dB and insertion loss of 0.20 dB. Under the five-port output status, the efficiency is larger than 19% for each diffraction order, meanwhile, the total efficiency and uniformity are 97% and 0.58 %, respectively. The proposed grating with positive implications has good potentials in polarization multiplexing and polarization-correlated grating interferometry.

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Section: Introductionmentioning

confidence: 99%

High-efficiency polarization-selective two-dimensional diffraction gratings based on silver cuboid arrays

Zou,

Fang,

Liu

et al. 2024

Phys. Scr.

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“…The diffraction theory or experimental fabrication of traditional gratings have been extensively studied [1][2][3][4]. By optimizing the grating profile parameters, the designed grating can be used in various fields, such as sensors [5], beam splitters [6][7][8], polarizers [9][10][11], filters [12][13][14], absorbers [15][16][17][18], and solar cells [19][20][21][22], etc. In recent years, with the development of ultra-precision optical devices and the improvement of multi-beam splitting in the optical system of lithography machines, multi-channel beam splitters have aroused wide interest among researchers in the production and application environment.…”

Section: Introductionmentioning

confidence: 99%

Compact silica-based equal nine-channel generated by triple-layer arrays

Fang

Wang

2021

Phys. Scr.

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In order to achieve the demands of multi-beam splitting in the optical communication system, a compact high-efficiency silica-based nine-channel beam splitter grating (BSG) at infrared wavelength is proposed based on a three-layer array structure. The grating profile parameters are investigated by the rigorous coupled-wave analysis (RCWA) and the finite-element method (FEM). The total efficiency of the nine-channel beam splitter reaches 96.98%, and the error of uniformity is reduced to 2.98%. The results show that the theoretical values of the two optimization methods are in good agreement. Moreover, the presented grating has a good performance against fabrication tolerances. The modal method is used for detailed physical explanation of the energy exchange and propagation modes inside the grating. The proposed high-efficiency nine-channel beam separation by three-layer arrays should be helpful for developing the multi-beam splitting of the optical system of the lithography machine and the new ultra-precision optical devices.

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Dual-functional grating splitter with high efficiency at the second-order Littrow incidence

Shi,

Wang,

Cui

et al. 2024

Indian J Phys

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Embedded dual-layered dielectric slit arrays under second Bragg incidence for 1×3 splitting field propagation

Cited by 3 publications

References 25 publications

High-efficiency polarization-selective two-dimensional diffraction gratings based on silver cuboid arrays

High-efficiency polarization-selective two-dimensional diffraction gratings based on silver cuboid arrays

Compact silica-based equal nine-channel generated by triple-layer arrays

Dual-functional grating splitter with high efficiency at the second-order Littrow incidence

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