| 基于磁性光子晶体的宽频带低损耗环行器 |
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| 引用本文： | 梁吴艳,陈德媛,谷云斌,夏雨,陈兵.基于磁性光子晶体的宽频带低损耗环行器[J].半导体光电,2019,40(2):176-180, 246. |
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| 作者姓名： | 梁吴艳 陈德媛 谷云斌 夏雨 陈兵 |
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| 作者单位： | 南京邮电大学 电子与光学工程学院, 微电子学院, 南京 210046,南京邮电大学 电子与光学工程学院, 微电子学院, 南京 210046,南京邮电大学 电子与光学工程学院, 微电子学院, 南京 210046,南京邮电大学 电子与光学工程学院, 微电子学院, 南京 210046,南京邮电大学 电子与光学工程学院, 微电子学院, 南京 210046 |
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| 基金项目： | 江苏省自然科学基金项目(BK20160909)；中国博士后科学基金项目(2018M632345). |
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| 摘 要： | 设计了一种基于光子晶体的结构紧凑、损耗低、频带宽的三端口三光路光环行器,该环行器由Y型光子晶体波导及配置在中心位置的磁光材料星形柱构成。通过对结构参数进行优化,该结构可以分别实现194~196GHz、198.2~199.4GHz和197~197.6GHz三个频段内稳定的顺时针单向环行传输,隔离度分别大于24、15.21和14.5dB,插入损耗分别小于0.18、0.11和0.38dB。该环行器结构简单,特别适用于结构复杂的光子集成系统,同时可提高光路的抗干扰性和稳定性等。
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| 关 键 词： | 二维磁性光子晶体 环行器 旋磁特性 有限元法 隔离度 插入损耗 |
| 收稿时间： | 2018/11/5 0:00:00 |
Broadband and Low-loss Circulators Based on Magnetic Photonic Crystals |
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| LIANG Wuyan,CHEN Deyuan,GU Yunbin,XIA Yu and CHEN Bing.Broadband and Low-loss Circulators Based on Magnetic Photonic Crystals[J].Semiconductor Optoelectronics,2019,40(2):176-180, 246. |
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| Authors: | LIANG Wuyan CHEN Deyuan GU Yunbin XIA Yu and CHEN Bing |
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| Institution: | College of Electronic and Optical Engin. & College of Microelectronics, Nanjing University of Posts and Telecommun., Nanjing 210046, CHN,College of Electronic and Optical Engin. & College of Microelectronics, Nanjing University of Posts and Telecommun., Nanjing 210046, CHN,College of Electronic and Optical Engin. & College of Microelectronics, Nanjing University of Posts and Telecommun., Nanjing 210046, CHN,College of Electronic and Optical Engin. & College of Microelectronics, Nanjing University of Posts and Telecommun., Nanjing 210046, CHN and College of Electronic and Optical Engin. & College of Microelectronics, Nanjing University of Posts and Telecommun., Nanjing 210046, CHN |
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| Abstract: | Designed is a three-port and three-optical-path optical circulator with compact structure, low loss and wide broadband. The circulator is composed of a Y-shaped photonic crystal waveguide and a star column of magneto-optical material arranged at the center of the waveguide. By optimizing the structure parameters, the structure can realize stable unidirectional circular transmission in a wide frequency range of 194~196GHz, 198.2~199.4GHz and 197~197.6GHz, respectively for the three light paths. The isolation degree is higher than 24,5.21 and 14.5dB, and the insertion loss is less than 0.18,0.11 and 0.38dB, respectively. The circulator with simple structure is suitable for photonic integrated system, and it is helpful to improve the anti-interference and stability of the optical path. |
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| Keywords: | 2D magneto-photonic crystals circulator gyromagnetic property FEM isolation insertion loss |
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