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Photonics 2015, 2(2), 498-508; doi:10.3390/photonics2020498

Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

1
Department of Applied Physics, Yale University, New Haven, CT 06511, USA
2
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and School of Physics, Nanjing University, Nanjing 219003, China
3
Department of Physics, University of Arkansas, Fayetteville, AR 72701, USA
*
Author to whom correspondence should be addressed.
Received: 14 April 2015 / Accepted: 5 May 2015 / Published: 13 May 2015
(This article belongs to the Special Issue New Frontiers in Plasmonics and Metamaterials)
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Abstract

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. View Full-Text
Keywords: on-chip optical asymmetric transmission; gain-saturation nonlinearity; active WGM microtoroid cavity; figures of merit; second law of thermodynamics; Fano interference on-chip optical asymmetric transmission; gain-saturation nonlinearity; active WGM microtoroid cavity; figures of merit; second law of thermodynamics; Fano interference
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wen, J.; Jiang, X.; Zhang, M.; Jiang, L.; Hua, S.; Wu, H.; Yang, C.; Xiao, M. Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity. Photonics 2015, 2, 498-508.

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