Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

Photonics

Jianming Wen¹  Xiaoshun Jiang²  Mengzhen Zhang¹  Liang Jiang¹  Shiyue Hua²  Hongya Wu²  Chao Yang² 

[1] Department of Applied Physics, Yale University, New Haven, CT 06511, USA; E-Mails:;National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and School of Physics, Nanjing University, Nanjing 219003, China; E-Mails:

关键词: on-chip optical asymmetric transmission;    gain-saturation nonlinearity;    active WGM microtoroid cavity;    figures of merit;    second law of thermodynamics;    Fano interference;   

DOI  :  10.3390/photonics2020498

来源: mdpi

【 摘 要 】

On-chip nonreciprocal light transport holds a great impact on optical information processing and communications based upon integrated photonic devices. By harvesting gain-saturation nonlinearity, we recently demonstrated on-chip optical asymmetric transmission at telecommunication bands with superior nonreciprocal performances using only one active whispering-gallery-mode microtoroid resonator, beyond the commonly adopted magneto-optical (Faraday) effect. Here, detailed theoretical analysis is presented with respect to the reported scheme. Despite the fact that our model is simply the standard coupled-mode theory, it agrees well with the experiment and describes the essential one-way light transport in this nonreciprocal device. Further discussions, including the connection with the second law of thermodynamics and Fano resonance, are also briefly made in the end.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.