High contrast all-optical diode based on direction-dependent optical bistability within asymmetric ring cavity

We propose a simple all-optical diode which is comprised of an asymmetric ring cavity containing a two-level atomic ensemble. Attributed to spatial symmetry breaking of the ring cavity, direction-dependent optical bistability is obtained in a classical bistable system. Therefore, a giant optical non...

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Bibliographic Details
Published in:Chinese physics B 2016-08, Vol.25 (8), p.206-210
Main Author: 夏秀文 张新琴 许静平 羊亚平
Format: Article
Language:English
Subjects:
Asymmetry
Broken symmetry
Diodes
Gates
Holes
Logic
Optical bistability
不对称
光二极管
光学双稳态
全光逻辑
双稳系统
对称性破缺
环腔
高对比度
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Summary:We propose a simple all-optical diode which is comprised of an asymmetric ring cavity containing a two-level atomic ensemble. Attributed to spatial symmetry breaking of the ring cavity, direction-dependent optical bistability is obtained in a classical bistable system. Therefore, a giant optical non-reciprocity is generated, which guarantees an all-optical diode with a high contrast up to 22 d B. Furthermore, its application as an all-optical logic AND gate is also discussed.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/25/8/084211