The effect of waveguide parameters on gan based S-bend Y-junction optical power divider

R. W. Purnamaningsih, N. R. Poespawati, T. Abuzairi, S. Rahardjo, M. Hamidah, E. Dogheche
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引用次数: 2

Abstract

GaN-based structures have attracted many researchers in developing photonic devices. These semiconductor structures can operate at high temperatures and high-power levels due to their mechanical hardness. So far, optical splitters design based on Y-junction splitters are widely used on the various material structure. The problem of these structures is radiation loss at the junction area. In this paper, we study the effect of various waveguide parameters on GaN-based S-bend Y-junction optical power divider. The design consists of three sections: linear rectangular rib waveguide, parabolic taper and two S-bend sine branches with the total length of 1000μm. We use optical beam propagation methods (BPM) to obtain the characteristic of the guided wave to calculate the field propagation through the structure as a function of waveguide parameters, such as branching angle and input wavelength. All simulations are carried out using the OptiBPM software. From the simulation results, it shows that to maintain 90% transmitted power, the branching angle for the design should be at the range of 0.5–1.5°. It is also demonstrated that the transmitted power almost stable through the wavelength range from 1.5 up to 1.6 μm with an average of power loss at about 0.35 dB. The simulation results presented can be applied for future GaN Y-junction based waveguide photonic devices design.
波导参数对氮化镓s弯y结光功率分压器的影响
氮化镓基结构吸引了许多研究人员开发光子器件。由于它们的机械硬度,这些半导体结构可以在高温和高功率水平下工作。目前,基于y结分光器的光分光器设计广泛应用于各种材料结构上。这些结构的问题是在结区的辐射损失。本文研究了不同波导参数对氮化镓基s弯y结光功率分压器的影响。该设计由三部分组成:线性矩形肋波导、抛物线锥形波导和两个s弯正弦分支,总长度为1000μm。我们利用光束传播法(BPM)获得导波的特性,计算出场在结构中的传播随波导参数(如分支角和输入波长)的变化。所有的仿真都是使用OptiBPM软件进行的。仿真结果表明,为了保持90%的传输功率,设计的分支角应在0.5 ~ 1.5°范围内。在1.5 ~ 1.6 μm波长范围内,传输功率基本稳定,平均功率损耗约为0.35 dB。仿真结果可用于未来基于GaN y结的波导光子器件的设计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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