Research on SubWavelength Grating Polarizing Beam Splitter

Guo, Chucai; Weimin, 叶卫民 Ye; Xiaodong, 袁晓东 Yuan; Chun, 曾淳 Zeng; Jiarong, 季家镕 Ji

doi:10.3788/aos20103009.2690

Cited by 4 publications

(2 citation statements)

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“…Therefore, periodical patterning of a single optical layer on a substrate or as a free-standing membrane is necessary. 11,12 The preparation of a dielectric layer is complex, and it is unstable on the interface of optical dielectrics.…”

Section: Introductionmentioning

confidence: 99%

Polarization beam splitter based on sub-wavelength binary grating

Dong

Wang

2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

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Because of the special diffraction characteristic of sub-wavelength grating structures, light energy with different polarization states will distribute in different diffraction orders. These gratings can obtain a high polarization extinction ratio with an appropriate set of parameters of grating structures and the incidence angle. The polarization beam splitters with different operating modes (reflective) was designed, and the finite-difference time-domain (FDTD) method was used to simulate the intensity of each diffraction order. The rigorous coupled wave analysis (RCWA) method was applied to analyze the spectral characteristics and the fabrication tolerance. The effects of the errors are clarified. In this paper, a polarization beam splitter based on grating with binary sub-wavelength structures is proposed. The ridges or grooves can be etched directly on the substrate instead of the dielectric layer. The split gratings work with an oblique incidence angle, and the waves with different polarization are distributed in different diffraction orders in the reflection or transmission area.

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Section: Introductionmentioning

confidence: 99%

Polarization beam splitter based on sub-wavelength binary grating

Dong

Wang

2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

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“…Because of its small size, low connection loss, ease of integration, optical waveguide PBS has become an important device in integrated optics and optical communications systems. The current waveguide PBS have such structure types as directional coupler type [6], asymmetric Y type [7], multimode interference type [8] and wire-grid model type [9] PBS, and some of them have become a hot spot in the field of optical micro/nano-fiber (MNF). TE / TM polarization beam splitter based on Silicon-on-Insulator ridge nanowire directional coupler has already been studied [10].…”

Section: Introductionmentioning

confidence: 99%

Characterization of the polarization beam splitters based on optical micro/nano-fiber

Zhai¹,

Yu²,

Chen³

et al. 2011

SPIE Proceedings

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The characteristics of the polarization coupling of two optical micro/nano-fibers (MNFs), which are placed close and parallel each other, were investigated by three dimension full vector beam propagation method (3-D FVBPM). The analytical results of the polarization coupling show that a polarization beam splitter (PBS) device can be constructed based on the coupling of two parallel and close MNFs. In order to optimize the polarization splitting performance of the device, the geometric parameters of the PBS, such as the diameter of optical MNFs and the gap between them were investigated through numerical stimulation. The optimal parameters are diameter of 0.9 μm, gap of 0.5 μm and length of approximately 218 μm respectively. Additionally, fabrication tolerances of each parameter for the polarization splitter PBS were also investigated. In the case of incident wavelength at 1550 nm, and the polarization extinction ratio of both output ports of PBS larger than 15 dB, the fabrication tolerances for bandwidth and overlapping length are 10 nm and , ±2μm , whereas approximately -3nm~2nm for tolerances in the diameter and gap.

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High-reflectivity non-periodic sub-wavelength gratings with small-angle beam-steering ability and its application in Fabry–Perot cavity

Zhang

Duan

et al. 2018

Opt Quant Electron

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Research on SubWavelength Grating Polarizing Beam Splitter

Cited by 4 publications

References 0 publications

Polarization beam splitter based on sub-wavelength binary grating

Polarization beam splitter based on sub-wavelength binary grating

Characterization of the polarization beam splitters based on optical micro/nano-fiber

High-reflectivity non-periodic sub-wavelength gratings with small-angle beam-steering ability and its application in Fabry–Perot cavity

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