材料科学
光隔离器
隔离器
光电子学
插入损耗
微带线
光学
绝缘体上的硅
波导管
磁铁
光功率
硅
电气工程
光纤
物理
激光器
工程类
作者
JIACHANG LIANG,Yan Li,Tingge Dai,Yuejun Zhang,Xiaowei Zhang,Hongjun Liu,Pengjun Wang
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2023-02-21
卷期号:31 (5): 8375-8375
被引量:2
摘要
The integrated optical isolator is an essential building block in photonic integrated chips. However, the performance of on-chip isolators based on the magneto-optic (MO) effect has been limited due to the magnetization requirement of permanent magnets or metal microstrips on MO materials. Here, an MZI optical isolator built on a silicon-on-insulator (SOI) without any external magnetic field is proposed. A multi-loop graphene microstrip operating as an integrated electromagnet above the waveguide, instead of the traditional metal microstrip, generates the saturated magnetic fields required for the nonreciprocal effect. Subsequently, the optical transmission can be tuned by varying the intensity of currents applied on the graphene microstrip. Compared with gold microstrip, the power consumption is reduced by 70.8%, and temperature fluctuation is reduced by 69.5% while preserving the isolation ratio of 29.44 dB and the insertion loss of 2.99 dB at1550 nm.
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