Design of Three-dimensional Beam Splitter with Mode Conversion based on Multimode Interferometer

ZHANG Yun-chao; WANG Jin; BAO Yi-yang; ZHAI Yu-meng; LU Yun-qing

doi:10.13756/j.gtxyj.2018.03.011

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Design of Three-dimensional Beam Splitter with Mode Conversion based on Multimode Interferometer

- Design of Three-dimensional Beam Splitter with Mode Conversion based on Multimode Interferometer
- Study on Optical communication Issue 3, Pages: 40-42(2018)
- 作者机构：
  
  南京邮电大学通信与信息工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2018.03.011
  CLC： TN929.1
- Published：2018，
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[1]张云超,王瑾,包怡阳,翟羽萌,陆云清.基于多模干涉器的三维模式转换分束器的设计[J].光通信研究,2018(03):40-42+63.

ZHANG Yun-chao, WANG Jin, BAO Yi-yang, et al. Design of Three-dimensional Beam Splitter with Mode Conversion based on Multimode Interferometer. [J]. (3):40-42(2018)
[1]张云超,王瑾,包怡阳,翟羽萌,陆云清.基于多模干涉器的三维模式转换分束器的设计[J].光通信研究,2018(03):40-42+63. DOI： 10.13756/j.gtxyj.2018.03.011.

ZHANG Yun-chao, WANG Jin, BAO Yi-yang, et al. Design of Three-dimensional Beam Splitter with Mode Conversion based on Multimode Interferometer. [J]. (3):40-42(2018) DOI： 10.13756/j.gtxyj.2018.03.011.

摘要

采用三维结构光子器件可以实现多维度的空分复用

即并行处理多路信号

从而增加传输容量

提高集成密度。文章根据三维多模干涉耦合器的自成像原理

设计了一种易于集成的三维模式转换分束器。该分束器可以将输入的基模光场转换为3个基模光场和3个一阶模光场输出。用聚合物材料设计并优化得到多模波导的长、宽和高分别为3 398.17、50.00和29.37μm。模拟结果显示

在1 550nm波长时的总传输效率为85.5%

其中基模输出光场的传输效率为28.9%

最大不均衡性为0.010dB;一阶模输出光场的转换效率为56.6%

最大不均衡性为0.004dB。

Abstract

Three-dimensional photonic devices can process multiple signals simultaneously in terms of multi-dimensional space division multiplexing

which increase the transmission capacity and improve the integrated density.In this paper

based on selfimage principle of 3D Multimode Interference（MMI）coupler

a 3D Beam Splitter（BS）with mode conversion is designed

which can be easily integrated.The 3D-BS with mode conversion can convert the input beam at the fundamental mode into three output beams at the fundamental mode and three output beams at the first-order mode.The length

width and height of the MMI are designed with polymer materials and optimized to be 3 398.17

50.00 and 29.37μm respectively.The simulation results show that the total transmission efficiency of the BS is 85.5%

and the transmission efficiency of the output fundamental mode is 28.9% with the maximum imbalance of 0.010 dB.The conversion efficiency of the output first-order mode is 56.6% and its maximum imbalance is 0.004 dB.

关键词

集成光学多模干涉耦合器模式转换分束器

Keywords

integrated opticsmultimode interference couplermode conversionbeam splitter

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