Tingting Zhai

Focus: Heterogeneous integration of LiTaO3 modulators on SiN waveguides, and integration of QCLs on Ge-Si and Ge-on-SOI platforms. • Fabricated the hybrid LiTaO3/SiN devices and realised the heterogeneous integration by micro transfer printing. • Designed, fabricated, and characterized mid-IR PICs on Ge-on-Si and Ge-on-SOI platforms, including full experimental setup development for sensing applications. • Integrated multi-wavelength QCLs (DFB, FP) on Ge-based platforms to realize compact, tunable mid-IR sources for sensing systems. • Work Package Manager (Horizon 2020 “M3NIR”): Led development of key platform modules, including PDKs, fabrication processes, hollow waveguides, microfluidics, and high-precision flip-chip assembly/packaging. • Contributed to the development and experimental validation of the Ge-on-SOI mid-IR photonics platform (7.5 µm) on a 200 mm CMOS pilot line at IMEC, including full PDK development and characterization for scalable mid-IR PICs.

Laboratory light, nanomaterials and nanotechnologies (L2n) & CNRS Thesis: Plasmonic-enhanced graphene modulator neuron for neuromorphic nanophotonic applications. • Designed, simulated, fabricated, and characterized ultra-compact plasmonic-enhanced graphene electro-optic modulators on SOI platform (1.05 µm), achieving high speed (47 GHz) and low energy consumption (19 fJ/bit). • Developed silicon photonic tensor cores for photonic neural networks, enabling parallel matrix–vector multiplication on SOI platforms. • Implemented machine learning algorithms for high-accuracy MNIST classification using photonic hardware frameworks. • Designed hyperbolic metamaterials to enhance quantum dot emission. • Four wave mixing with amorphous SiC ring resonator in quantum integrated circuit. • Engineered graphene-based metasurfaces on Si origami substrate with electrically tunable plasmonic responses in MIR/THz regimes.

Wafer lever hybrid aspherical liquid-tunable optical systems • Design, and micro fabrication of an electrostatically actuated aspherical liquid-tunable lens for compact imaging systems (e.g., smartphone cameras).

Holographic augmented reality (AR) and head up display (HUD) system • Developed computer-generated holography (CGH) algorithms for real-time full-color denoised holographic head-up display (HUD) systems. • Built and optimized complete optical setups for holographic display validation and performance testing.

Wave-front coding to enlarge the field of length of endoscope

Novel DLP reflective ultrashort-focal length micro projector design

Laboratory light, nanomaterials and nanotechnologies (L2n) & CNRS • Design, simulation, fabrication and characterization of a subwavelength plasmonic-enhanced graphene-based electro optical modulator on SOI platform • Design, simulation, fabrication, characterization of programmable neuromorphic photonic integrated circuits for machine learning • Design, simulation, fabrication and characterization of a novel graphene origami-based electrically-tunable mid-IR and THz plasmonic metasurface • Hyperbolic metamaterials design to enhance the emission of quantum dots • Four wave mixing with amorphous SiC ring resonator in quantum integrated circuit • Graphene-based electrically-tunable mid-infrared plasmonic antenna metasurfaces