Fig. 1. (a) Schematic diagram of TFLN microwave photonic sideband selector. (The schematic is not drawn to scale.) (b) Cross-sectional view of the electro-optic modulation region and the thermo-optic tunable filter; (c) definition of design parameters of the microring filter.

Fig. 2. (a) Working principle of the proposed microwave photonic sideband selector. CWL, continuous wave laser; MZM, Mach–Zehnder modulator; TF, tunable filter; OSA, optical spectrum analyzer. (b) Simulated dual sideband modulation; (c) simulated sideband selection.

Fig. 3. (a) Normalized electro-optic responses of the TFLN asymmetric MZM; (b) measured bandpass filtering response of the TFLN filter.

Fig. 4. (a) Image of the packaged microwave photonic sideband selector; (b) optical transmission spectrum of the microwave photonic sideband selector. The illustration is a partially enlarged view of the optical transmission spectrum of the microwave photonic sideband selector.

Fig. 5. (a) Measured optical spectra after asymmetrical MZM; (b) measured optical spectra of sideband selection of the demonstrated TFLN microwave photonic sideband selector.