用于温度不敏感集成光学隔离器应用的镝取代铈：钇铁石榴石薄膜

Dysprosium Substituted Ce:YIG Thin Films for Temperature Insensitive Integrated Optical Isolator Applications.

作者信息

Wei Zixuan, Yan Wei, Qin Jun, Deng Longjiang, Bi Lei

机构信息

National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu 610054, China.

出版信息

Materials (Basel). 2022 Feb 24;15(5):1691. doi: 10.3390/ma15051691.

DOI:10.3390/ma15051691

PMID:35268921

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8911169/

Abstract

Magneto-optical isolators are key components in photonic systems. Despite the progress of silicon-integrated optical isolators, the Faraday rotation of silicon-integrated magneto-optical materials, such as cerium-doped yttrium iron garnet (Ce:YIG), show a strong temperature dependence, limiting the temperature range for integrated nonreciprocal photonic device applications. In this work, we report dysprosium substituted Ce:YIG thin films (DyCeFeO, Dy:CeIG) showing a low temperature coefficient of Faraday rotation. A temperature insensitive range of the Faraday rotation is observed in between 25 °C to 70 °C for this material, compared to 20% variation of the Faraday rotation in Ce:YIG thin films. A Dy:CeIG based temperature insensitive silicon-integrated optical isolator operating in the temperature range of 23 °C to 70 °C is experimentally demonstrated.

摘要

磁光隔离器是光子系统中的关键组件。尽管硅集成光隔离器取得了进展，但诸如掺铈钇铁石榴石（Ce:YIG）等硅集成磁光材料的法拉第旋转表现出强烈的温度依赖性，限制了集成非互易光子器件应用的温度范围。在这项工作中，我们报道了镝取代的Ce:YIG薄膜（DyCeFeO，Dy:CeIG），其法拉第旋转温度系数较低。与Ce:YIG薄膜中法拉第旋转20%的变化相比，该材料在25°C至70°C之间观察到法拉第旋转的温度不敏感范围。实验证明了一种基于Dy:CeIG的温度不敏感硅集成光隔离器，其工作温度范围为23°C至70°C。