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Low-power 1×2 all-optical switching in a silicon double coupler microring resonator

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Abstract

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 μm 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 refractive-index change and the π-phase shift of signal light, after which 1×2 all-optical switching can be realized.

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Authors and Affiliations

  1. Department of Physics, Harbin Institute of Technology, Harbin, 150001, China

    Dou Na & Chunfei Li

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  1. Dou Na
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  2. Chunfei Li
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Correspondence to Chunfei Li.

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Na, D., Li, C. Low-power 1×2 all-optical switching in a silicon double coupler microring resonator. Front. Optoelectron. China 2, 31–34 (2009). https://doi.org/10.1007/s12200-008-0066-5

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  • DOI: https://doi.org/10.1007/s12200-008-0066-5

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