High contrast all-optical diode based on direction-dependent optical bistability within asymmetric ring cavity |
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| Affiliation: | 1.School of Mathematics and Physics, Jinggangshan University, Ji'an 343009, China;2.MOE Key laboratory of Advanced Micro-structure Materials, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | 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. |
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| Keywords: | optical diode optical bistability optical logic gate |
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