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arXiv 1306.6144physics.optics
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基于量子激发光子晶格的片上非互易光学器件

On-chip non-reciprocal optical devices based on quantum inspired photonic lattices

Ramy El-Ganainy, Miguel Levy, Alexander Eisfeld, Demetrios N. Christodoulides

摘要:

我们提出了一种新的几何结构的集成光子器件,可以用作隔离器和偏振分离器的基础上工程光子晶格。从光波导阵列,模仿Fock空间表示的非相互作用的两个站点的玻色哈伯德哈密顿,我们表明,这些结构引入磁光非互易性导致优越的光隔离性能。在前向传播方向上,输入TM偏振光束在输入和输出波导通道之间经历完美的状态转移,而表面布洛赫振荡阻止相同端口之间的后向传输。我们的分析表明,一个大的隔离比75分贝后,8毫米的传播距离内7耦合波导。此外,我们还证明了,在这种相同的几何结构中,明智地选择非互易性可以导致完美的偏振分裂。

英文摘要:

We propose a novel geometry for integrated photonic devices that can be used as isolators and polarization splitters based on engineered photonic lattices. Starting from optical waveguide arrays that mimic Fock space representation of a non-interacting two-site Bose Hubbard Hamiltonian, we show that introducing magneto-optic nonreciprocity to these structures leads to a superior optical isolation performance. In the forward propagation direction, an input TM polarized beam experiences a perfect state transfer between the input and output waveguide channels while surface Bloch oscillations block the backward transmission between the same ports. Our analysis indicates a large isolation ratio of 75 dB after a propagation distance of 8 mm inside seven coupled waveguides. Moreover, we demonstrate that, a judicious choice of the nonreciprocity in this same geometry can lead to perfect polarization splitting.

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