Bistability in hybrid micro-ring resonator for all-optical memory
In this paper,we propose a heterogeneous integrated waveguide platform.The bistable behavior of a micro-ring resonator is observed and analyzed,and the implementation of all-optical memory is shown.The proposed heterogeneous integrated waveguide has strong Kerr nonlinear effect,without the restrictions on thermo-optical effect and free-carrier lifetime.Pure Kerr nonlinear effect enables the ultra-fast all-optical switching.We designed a micro-ring resonator with high quality factor Q = 77 565.The bistable behavior was simulated based on coupled mode theory(CMT),and an all-optical memory was realized under the pulse excitation with peak power of 474 fJ and pulse width of 20 ps.Besides,we demonstrated the wavelength addressable four-bit optical memory using four micro-ring resonators cascaded by wavelength division multiplexing.This paper investigates the bistability based on high Kerr nonlinear effect,which provides the possibility of achieving ultra-fast all-optical switching,and shows certain research significance on optical storage,optical switching,and artificial intelligence.
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