• Frontiers of Optoelectronics
  • Vol. 2, Issue 1, 31 (2009)
Dou NA and Chunfei LI*
Author Affiliations
  • Department of Physics, Harbin Institute of Technology, Harbin 150001, China
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    DOI: 10.1007/s12200-008-0066-5 Cite this Article
    Dou NA, Chunfei LI. Low-power 1×2 all-optical switching in a silicon double coupler microring resonator[J]. Frontiers of Optoelectronics, 2009, 2(1): 31 Copy Citation Text show less

    Abstract

    Low-power 1×2 optical switching in a double coupler ring resonator (DCRR) made by a silicon nanoscale waveguide b ased 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 refractive-index change and the π-phase shift of signal light, after which 1×2 all-optical switching can be realized.
    Dou NA, Chunfei LI. Low-power 1×2 all-optical switching in a silicon double coupler microring resonator[J]. Frontiers of Optoelectronics, 2009, 2(1): 31
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