Abstract
The main goal of this paper is to design and optimize 1 × 2, 1 × 4 and 1 × 8 Y beam splitters based on a two-dimensional (2-D) photonic crystal operating in the infrared light region of 1550 nm. By altering the Y junction area and using the topology optimization, a very high efficient total transmission of about 100% and equal power distribution of both splitters are achieved. The proposed structures are designed on a hexagonal lattice of air holes immersed in dielectric matrix. These current designs are numerically simulated and analyzed using the plane wave expansion method and finite-difference time-domain method. The total sizes of 1 × 2, 1 × 4 and 1 × 8 Y splitters are 60.69 µm2, 158.97 µm2 and 341.9 µm2 respectively, which are extremely compact and they are suitable for photonic integrated circuits.
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The datasets utilized in the manuscript are available from the corresponding author on reasonable request.
Code availability
In the present work, the designed structures are numerically simulated and analyzed using the RSoft CAD Environment. Two modules are utilized in the manuscript. The BandSOLVE toolbox is employed to perform the Plane Wave Expansion Method (PWE) to extract the photonic band gap of the proposed designs. The FullWAVE toolbox of RSoft software, was utilized to implement the finite-difference time-domain (FDTD) method for simulating the propagation of electromagnetic wave in the proposed structures.
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AL supervised the project, and was the major contributor to draft the manuscript. IM developed the idea, participated in the design and the analysis of the study. All authors read and approved the final manuscript.
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Moumeni, I., Labbani, A. Very high efficient of 1 × 2, 1 × 4 and 1 × 8 Y beam splitters based on photonic crystal ring slot cavity. Opt Quant Electron 53, 129 (2021). https://doi.org/10.1007/s11082-021-02780-8
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DOI: https://doi.org/10.1007/s11082-021-02780-8