Nonreciprocal Amplification in Coupled‐Rotating Cavities Around Exceptional Points,Annalen Der Physik

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Nonreciprocal Amplification in Coupled‐Rotating Cavities Around Exceptional Points
Annalen Der Physik ( IF 2.2 ) Pub Date : 2021-03-15 , DOI: 10.1002/andp.202000405
Rui Peng ₁ , Chengsong Zhao ₁ , Zhen Yang ₁ , Biao Xiong ₂ , Ling Zhou ₁

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A nonreciprocal‐amplified scheme for signal transmission is proposed in a coupled rotation‐cavity system, where the two cavities rotate with opposite directions, and an optical parametric amplifier (OPA) is attached to one cavity. The coupling between cavities can effectively compensate and enhance the frequency shift of the Sagnac effect, and a perfect nonreciprocity can be achieved. Owing to the introduction of an OPA medium, eigenvalues of the dynamic matrix exhibit exceptional points (EPs), and the amplified‐nonreciprocal transmission can be obtained around EPs.

中文翻译：

耦合点周围耦合腔中的不可逆放大

在耦合旋转腔系统中提出了一种信号传输的不可逆放大方案，该系统中两个腔以相反的方向旋转，并且光参量放大器（OPA）附着在一个腔上。腔之间的耦合可以有效地补偿和增强Sagnac效应的频移，并且可以实现完美的不可逆性。由于引入了OPA介质，动态矩阵的特征值表现出特殊点（EPs），并且可以在EPs周围获得放大的单向传输。

更新日期：2021-04-08

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