Numerical analysis of a compact all-fiber polarization beam splitter based on dual-core photonic crystal fiber with As2S3 thin layer

Chen, Nan; Ding, Xin; Wang, Luyao; Xu, Yiming; Guo, Luhao; Huang, Yanming; Liu, Chenxun; Xu, Yiran; Guo, Wenhui; Xiao, Yunpeng; Yue, Wanglin; She, Yuhe

doi:10.1016/j.rinp.2023.107273

Cited by 7 publications

(1 citation statement)

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“…The proposed PCF features a conventional hexagonal lattice structure and incorporates two levels of complexity within the hole-array: a cluster of small circular holes positioned near the core region, and elliptical holes distributed on either side. In x-o-y plane, the majority of the cladding is characterized by circular holes, with their diameters denoted by d 1 and the lattice constant is denoted by Λ; The diameter of inner small holes is denoted by d 2 and the distance between them is denoted by d s ; The major and minor axis length of the elliptical holes is denoted by a and b, respectively; The gold layer thickness is denoted by t. In order to reduce the scattering leakage of light during propagation, a 3μmthickness perfectly matched layer (PML) is set to the outside of this PCF [30]. The proposed PCF structure is set as the solution domain by the finite element operator, and the solution domain is discretized into 23,684 small elements.…”

Section: Structure and Theorymentioning

confidence: 99%

Numerical analysis of an all-fiber plasmonic polarization filter using dual elliptical gold thin layers deposited photonic crystal fiber

Xu,

Liu,

Chen

et al. 2024

Phys. Scr.

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In order to solve the problems of high performance and small size incompatibility, as well as limited bandwidth, of traditional polarization filters in optical communication systems, this work presents an all-fiber polarization filter using dual elliptical gold layer deposited photonic crystal fiber by the finite element tool. The gold layers are plated on the inside of the two elliptical holes to create surface plasmon resonance effect, which cause the signal intensity in x-polarized direction to be much greater than that in y-polarized direction. The simulation results illustrate that when hole-to-hole pitch Ʌ is 2.0 μm, cladding hole diameter d1 is 2.0 μm, two inner-holes’ diameter d2 is 0.3 μm, spacing between two inner-holes ds is 0.755 μm, the major axis length of elliptical holes a is 2.0 μm, the minor axis length of elliptical holes b is 0.97 μm, the gold thin layer t is 100 nm, the proposed PCF filter exhibits good filtering performance at the communication wavelength of 1.55 μm, where the confinement loss in x- and y-polarized direction are 303.91 dB/cm and 0.06 dB/cm, respectively. The crosstalk and operating bandwidth improve with the increment of device’s length, the 800 μm-long PCF filter possesses the maximum crosstalk of -211.14 dB and the bandwidth of 600 nm. Finally, the experimental scheme is also discussed. We believe that this photonic filter can play a significant role in optical communication, optical sensing, spectral analysis, and other related fields.

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Section: Structure and Theorymentioning

confidence: 99%