Fig. 1: Photonic–phononic integrated circuits.
From: Scalable photonic-phonoinc integrated circuitry for reconfigurable signal processing
a Schematic of the hybrid photonic–photonic integrated circuit for multiplexed signal conversion between RF and optical fields mediated by acoustic fields. RF, optical, and acoustic fields are labeled in purple, red, and blue respectively. Different optical wavelength channels (λ1, λ2, λ3) are selected by tunable optical ring resonators. Different RF frequency channels (Ω1, Ω2, Ω3) are selected by acoustic ring resonators. b Reconfiguration diagram between different RF frequency and optical wavelength channels. c Field profile of the optical input TE0 mode with electric field direction arrows. d Field profile of the optical output TE1 mode with electric field direction arrows. e The displacement profile of the acoustic fundamental Rayleigh-like mode. f Photonic–phononic coupling strength as a function of the waveguide width and acoustic frequency.
