Frontiers of Optoelectronics >

2009 , Vol. 2 >Issue 1: 31 - 34

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

Research articles

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

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  • Department of Physics, Harbin Institute of Technology, Harbin 150001, China;

Published date: 05 Mar 2009

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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 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.

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 -34 . DOI: 10.1007/s12200-008-0066-5

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