Compact Low Loss Ribbed Asymmetric Multimode Interference Power Splitter

IF 2.1 4区物理与天体物理 Q2 OPTICS

Photonics Pub Date : 2024-05-17 DOI:10.3390/photonics11050472

Yanfeng Liang, Huanlin Lv, Baichao Liu, Haoyu Wang, Fangxu Liu, Shuo Liu, Yang Cong, Xuanchen Li, Qingxiao Guo

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Abstract

Optical power splitters (OPSs) are utilized extensively in integrated photonic circuits, drawing significant interest in research on power splitters with adjustable splitting ratios. This paper introduces a compact, low-loss 1 × 2 asymmetric multimode interferometric (MMI) optical power splitter on a silicon-on-insulator (SOI) platform. The device is simulated using the finite difference method (FDM) and eigenmode expansion solver (EME). It is possible to attain various output power splitting ratios by making the geometry of the MMI central section asymmetric relative to the propagation axis. Six distinct optical power splitters are designed with unconventional splitting ratios in this paper, which substantiates that the device can achieve any power splitter ratios (PSRs) in the range of 95:5 to 50:50. The dimensions of the multimode section were established at 2.9 × (9.5–10.9) μm. Simulation results show a range of unique advantages of the device, including a low extra loss of less than 0.4 dB, good fabrication tolerance, and power splitting ratio fluctuation below 3% across the 1500 nm to 1600 nm wavelength span.

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紧凑型低损耗带肋非对称多模干扰功率分配器

光功率分配器（OPS）在集成光子电路中得到广泛应用，因此具有可调分光比的功率分配器研究备受关注。本文介绍了一种基于硅绝缘体（SOI）平台的紧凑型、低损耗 1 × 2 非对称多模干涉（MMI）光功率分配器。该器件采用有限差分法（FDM）和特征模式扩展求解器（EME）进行仿真。通过使 MMI 中心部分的几何形状相对于传播轴不对称，可以实现各种输出功率分流比。本文设计了六种具有非常规分光比的不同光功率分配器，证明该设备可以实现 95:5 至 50:50 范围内的任何功率分配器比（PSR）。多模部分的尺寸确定为 2.9 × (9.5-10.9) μm。仿真结果显示了该器件的一系列独特优势，包括小于 0.4 dB 的低额外损耗、良好的制造容差以及在 1500 nm 至 1600 nm 波长跨度内低于 3% 的功率分光比波动。

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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来源期刊

Photonics Physics and Astronomy-Instrumentation

CiteScore

2.60

自引率

20.80%

发文量

817

审稿时长

8 weeks

期刊介绍： Photonics (ISSN 2304-6732) aims at a fast turn around time for peer-reviewing manuscripts and producing accepted articles. The online-only and open access nature of the journal will allow for a speedy and wide circulation of your research as well as review articles. We aim at establishing Photonics as a leading venue for publishing high impact fundamental research but also applications of optics and photonics. The journal particularly welcomes both theoretical (simulation) and experimental research. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material.