[1] [1] Rao A, Fathpour S. Compact lithium niobate electrooptic modulators[J]. IEEE J. of Sel. Top. in Quantum Electron., 2018, 24(4): 1-14.

[2] [2] Christian K, Hauke C, Moritz K, et al. Fiber-coupled plug-and-play heralded single photon source based on Ti∶LiNbO3 and polymer technology[J]. Opt. Express, 2023, 31(14): 22685-22697.

[3] [3] Sun S, Xu M, He M, et al. Folded heterogeneous silicon and lithium niobate Mach-Zehnder modulators with low drive voltage[J]. Micromachines, 2021, 12(7): 823.

[4] [4] Parfenov M, Tronev A, Ilichev I, et al. Precise correction of integrated optical power splitters based on lithium niobate substrates by photorefractive effect local excitation[J]. Appl. Phys., 2020, B126(5): 1-8.

[6] [6] Wang C, Zhang M, Stern B, et al. Nanophotonic lithium niobate electro-optic modulators[J]. Opt. Express, 2018, 26: 1547-1555.

[7] [7] Lee C, Cho S, Chun H. Investigation of frequency dependent nonlinearity on pulse amplitude modulation in bandlimited visible light communications[J]. Opt. Commun., 2020, 472(1): 126040.