Topology Optimization of Low-Loss Z-Bend 2D Photonic Crystal Waveguide

被引：6

作者：

Liu, Gang ^{[1
,2
]}

Wang, Fei ^{[2
,3
]}

Gao, Yongpan ^{[2
]}

Jia, Baonan ^{[2
]}

Guan, Xiaoning ^{[2
]}

Lu, Pengfei ^{[2
,3
]}

Song, Haizhi ^{[4
]}

机构：

[1] Beijing Univ Posts & Telecommun, Beijing Key Lab Space Ground Interconnect & Conver, Beijing 100876, Peoples R China

[2] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China

[3] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

[4] Southwest Inst Tech Phys, Renminnan Rd 4-7, Chengdu 610041, Peoples R China

来源：

PHOTONICS | 2023年 / 10卷 / 02期

基金：

中国国家自然科学基金;

关键词：

photonic crystal; topology optimization; transmission loss; transmission bandwidth; DESIGN; FABRICATION;

D O I：

10.3390/photonics10020202

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this article, we design a low-loss, high-bandwidth Z-bend photonic silicon crystal waveguide bending in a triangular lattice through topology optimization. Based on the topological optimization method, we change the relative position of air holes in the global scope to maximize the transmittance and bandwidth of the waveguide. The simulation results indicate that the transmission characteristics can be effectively improved with our method. After the optimization, the loss of the waveguide can be reduced to -5 dB and the bandwidth can increase to 160 nm. Our research has great significance for further optimizing the propagation of light in photonic crystals.

引用

页数：9

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