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篇目详细内容 |
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【篇名】 |
Low-power 1×2 all-optical switching in a silicon double coupler microring resonator* |
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【刊名】 |
Frontiers of Optoelectronics in China |
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【刊名缩写】 |
Front. Optoelectron. China |
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【ISSN】 |
1674-4128 |
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【EISSN】 |
1674-4594 |
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【DOI】 |
10.1007/s12200-008-0066-5 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2009 |
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【卷期】 |
2
卷1期 |
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【页码】 |
31-34
页,共
4
页 |
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【作者】 |
Dou NA;
Chunfei LI;
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【关键词】 |
all-optical switching; double coupler ring resonator; two photon absorption; free-carrier concentration; nonlinear refractive index |
【摘要】 |
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Low-power 1×2 optical switching in a double coupler ring resonator (DCRR) made by a silicon nanoscale waveguide based on two photon absorption (TPA) is analyzed theoretically. The TPA originates from a femtosecond pump light at 400 nm, which enters the DCRR together with a CW signal light at 1.55 mm through the input port. TPA makes the silicon free-carrier concentration change, which is proportional to the change of reflective index. Our numerical simulation shows that when average pump power reaches 2 mW, it will induce the 10−3 refraction-index change and the π-phase shift of signal light, after which 1×2 all-optical switching can be realized. |
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