Singular optical propagation properties of two types of one-dimensional anti-PT-symmetric periodic ring optical waveguide networks

doi:10.1088/1674-1056/ad12ab

中国物理B ›› 2024, Vol. 33 ›› Issue (3): 34201-034201.doi: 10.1088/1674-1056/ad12ab

Singular optical propagation properties of two types of one-dimensional anti-PT-symmetric periodic ring optical waveguide networks

Yanglong Fan(樊阳龙), Xiangbo Yang(杨湘波)^†, Huada Lian(练华达), Runkai Chen(陈润楷),Pengbo Zhu(朱蓬勃), Dongmei Deng(邓冬梅), Hongzhan Liu(刘宏展), and Zhongchao Wei(韦中超)

Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China

收稿日期:2023-09-15 修回日期:2023-11-04 接受日期:2023-12-06 出版日期:2024-02-22 发布日期:2024-02-29
通讯作者: Xiangbo Yang E-mail:xbyang@scnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11674107, 61475049, 11775083, 61774062, and 61771205).

Singular optical propagation properties of two types of one-dimensional anti-PT-symmetric periodic ring optical waveguide networks

Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China

Received:2023-09-15 Revised:2023-11-04 Accepted:2023-12-06 Online:2024-02-22 Published:2024-02-29
Contact: Xiangbo Yang E-mail:xbyang@scnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11674107, 61475049, 11775083, 61774062, and 61771205).

摘要/Abstract

摘要： Two types of one-dimensional (1D) anti-PT-symmetric periodic ring optical waveguide networks, consisting of gain and loss materials, are constructed. The singular optical propagation properties of these networks are investigated. The results show that the system composed of gain materials exhibits characteristics of ultra-strong transmission and bidirectional reflection. Conversely, the system composed of loss materials demonstrates equal transmittance and reflectance at some frequencies. In both the systems, a new type of total reflection phenomenon is observed. When the imaginary part of the refractive indices of waveguide segments is smaller than 10^-5, the system shows bidirectional transparency with the transmittance tending to be 1 and reflectivity to be smaller than 10^-8 at some bands. When the refractive indices of the waveguide segments are real, the system will be bidirectional transparent at the full band. These findings may deepen the understanding of anti-PT-symmetric optical systems and optical waveguide networks, and possess potential applications in efficient optical energy storage, ultra-sensitive optical filters, ultra-sensitive all-optical switches, integrated optical chips, stealth physics, and so on.

关键词: anti-PT-symmetric, waveguide networks, bidirectional transparent

Abstract: Two types of one-dimensional (1D) anti-PT-symmetric periodic ring optical waveguide networks, consisting of gain and loss materials, are constructed. The singular optical propagation properties of these networks are investigated. The results show that the system composed of gain materials exhibits characteristics of ultra-strong transmission and bidirectional reflection. Conversely, the system composed of loss materials demonstrates equal transmittance and reflectance at some frequencies. In both the systems, a new type of total reflection phenomenon is observed. When the imaginary part of the refractive indices of waveguide segments is smaller than 10^-5, the system shows bidirectional transparency with the transmittance tending to be 1 and reflectivity to be smaller than 10^-8 at some bands. When the refractive indices of the waveguide segments are real, the system will be bidirectional transparent at the full band. These findings may deepen the understanding of anti-PT-symmetric optical systems and optical waveguide networks, and possess potential applications in efficient optical energy storage, ultra-sensitive optical filters, ultra-sensitive all-optical switches, integrated optical chips, stealth physics, and so on.

Key words: anti-PT-symmetric, waveguide networks, bidirectional transparent

中图分类号: (Wave propagation, transmission and absorption)

42.25.Bs

11.30.Er (Charge conjugation, parity, time reversal, and other discrete symmetries) 42.79.Gn (Optical waveguides and couplers)

Yanglong Fan(樊阳龙), Xiangbo Yang(杨湘波), Huada Lian(练华达), Runkai Chen(陈润楷),Pengbo Zhu(朱蓬勃), Dongmei Deng(邓冬梅), Hongzhan Liu(刘宏展), and Zhongchao Wei(韦中超). Singular optical propagation properties of two types of one-dimensional anti-PT-symmetric periodic ring optical waveguide networks[J]. 中国物理B, 2024, 33(3): 34201-034201.

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Singular optical propagation properties of two types of one-dimensional anti-PT-symmetric periodic ring optical waveguide networks

Singular optical propagation properties of two types of one-dimensional anti-PT-symmetric periodic ring optical waveguide networks

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