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分光比可调的光功率分束器的设计

谢锋 朱硕隆 张振荣

谢锋, 朱硕隆, 张振荣. 分光比可调的光功率分束器的设计[J]. , 2023, 16(5): 1121-1128. doi: 10.37188/CO.2023-0038
引用本文: 谢锋, 朱硕隆, 张振荣. 分光比可调的光功率分束器的设计[J]. , 2023, 16(5): 1121-1128. doi: 10.37188/CO.2023-0038
XIE Feng, ZHU Shuo-long, ZHANG Zhen-rong. Design of an optical power splitter with adjustable split ratio[J]. Chinese Optics, 2023, 16(5): 1121-1128. doi: 10.37188/CO.2023-0038
Citation: XIE Feng, ZHU Shuo-long, ZHANG Zhen-rong. Design of an optical power splitter with adjustable split ratio[J]. Chinese Optics, 2023, 16(5): 1121-1128. doi: 10.37188/CO.2023-0038

分光比可调的光功率分束器的设计

doi: 10.37188/CO.2023-0038
基金项目: 国家自然科学基金(No. 12272407,No. 62275269,No. 62275271);国家重点研发计划(No. 2022YFF0706005);粤桂联合科学重点基金(No. 2021GXNSFDA076001);广西重点研发计划(No. AB22080048)
详细信息
    作者简介:

    谢 锋(1989—),男,广西浦北人,硕士研究生,讲师,2015年于广西大学获得硕士学位,主要从事光器件、人工智能方面的研究。E-mail:664019140@qq.com

    张振荣(1976—),男,湖南祁阳人,博士,教授,2005年于新加坡南洋理工大学获得博士学位,主要从事光通信、光器件等方面的研究。E-mail:zzr76@gxu.edu.cn

  • 中图分类号: TN256

Design of an optical power splitter with adjustable split ratio

Funds: Supported by National Natural Science Foundation of China (No. 12272407, No. 62275269, No. 62275271); National Key R & D Program of China (No. 2022YFF0706005); China Guangdong Guangxi Joint Science Key Foundation (No. 2021GXNSFDA076001); KR & DP of Guangxi (No. AB22080048)
More Information
  • 摘要:

    传统的解析理论设计方案存在计算复杂度高、有限解析解、耗时长等问题。为了解决以上问题,在传统的光器件设计基础上,提出一种依据逆向设计方法的分光比可调的光功率分束器方案。在1.92 μm×1.92 μm的紧凑区域内,引入Ge2Sb2Se4Te1(GSST)相变材料改变器件的折射率分布。利用直接二进制搜索算法搜索GSST晶态和非晶态的最优状态分布。设计实现同一种器件结构,分光比可调的T型光功率分束器。仿真分析了器件的初始结构、分光比、相变材料区域状态分布、制造容差以及光场分布。结果表明:分光比分别为1∶1、1.5∶1、2∶1的3种光功率分束器在波长1530 nm−1560 nm之间的最小相对误差分别为0.004%、0.14%和0.22%,在制造容差范围内传输曲线最大波动分别是0.95 dB、1.21 dB、1.18 dB。该分光器结构紧凑,在光通信和信息处理领域有着较大的应用潜力。

     

  • 图 1  算法流程图

    Figure 1.  Algorithm flow chart

    图 2  像素区域的划分及状态图

    Figure 2.  Division and state map of pixel regions

    图 3  器件结构

    Figure 3.  The device structure

    图 4  不同初始结构光功率分束器的光场分布以及初始平面结构

    Figure 4.  Light field distribution and the initial plane structure of optical power splitter with different initial structures

    图 5  不同初始结构的光功率分束器附加损耗曲线

    Figure 5.  Excess loss curves of optical power splitters with different initial structures

    图 6  不同分光比的光功率分束器的GSST状态、光场分布、透射光谱以及分光比曲线图

    Figure 6.  The GSST state, light field distribution, transmission spectrum and splitting ratio curves of optical power splitter with different splitting ratios

    图 7  孔直径在−10 nm至+10 nm变化时的透射光谱响应

    Figure 7.  The simulated transmission spectra varying with the hole diameter changing from −10 nm to 10 nm

    表  1  不同分光比器件的不同端口在不同制造容差下的误差分析表

    Table  1.   The error analysis table of different ports of devices with different split ratios under different manufacturing tolerances

    Split
    ratio
    Max
    absolute error
    Out1(+10)/dB
    Max absolute
    error
    Out2(+10)/dB
    Max absolute
    error
    Out1(−10)/dB
    Max absolute
    error
    Out2(−10)/dB
    1∶10.260.260.930.95
    1.5∶10.611.051.210.53
    2∶10.501.181.160.71
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出版历程
  • 收稿日期:  2023-03-02
  • 录用日期:  2023-04-03
  • 修回日期:  2023-03-27
  • 网络出版日期:  2023-04-13

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