Integrated photonics on thin-film lithium niobate

By Di Zhu, Linbo Shao, Mengjie Yu, Rebecca Cheng, B. Desiatov, C. Xin, Yaowen Hu, Jeffrey Holzgrafe, S. Ghosh, Amirhassan Shams-Ansari and 5 more. Advances in Optics and Photonics, 2021

940 citations recorded by the source corpus.

Lithium niobate (LN), an outstanding and versatile material, has influenced our daily life for decades—from enabling high-speed optical communications that form the backbone of the Internet to realizing radio-frequency filtering used in our cell phones. This half-century-old material is currently embracing a revolution in thin-film LN integrated photonics. The successes of manufacturing wafer-scale, high-quality thin films of LN-on-insulator (LNOI) and breakthroughs in nanofabrication techniques have made high-performance integrated nanophotonic components possible. With rapid development in the past few years, some of these thin-film LN devices, such as optical modulators and nonlinear wavelength converters, have already outperformed their legacy counterparts realized in bulk LN crystals. Furthermore, the nanophotonic integration has enabled ultra-low-loss resonators in LN, which has unlocked many novel applications such as optical frequency combs and quantum transducers. In this review, we cover—from basic principles to the state of the art—the diverse aspects of integrated thin-film LN photonics, including the materials, basic passive components, and various active devices based on electro-optics, all-optical nonlinearities, and acousto-optics. We also identify challenges that this platform is currently facing and point out future opportunities. The field of integrated LNOI photonics is advancing rapidly and poised to make critical impacts on a broad range of applications in communication, signal processing, and quantum information.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/2019ed75223f51bf7321f877eefee8bcbf953387

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In Atomic and Molecular Physics, and Optics

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Citations in the corpus

Reduced Material Loss in Thin-film Lithium Niobate Waveguides (2022, background): “Thin-film lithium niobate (TFLN) platform has enabled a myriad of classical and quantum applications [1], many of which crucially rely on low optical loss.”
Integrated electro-optics on thin-film lithium niobate (2024, neutral): “), III-V-TFLN integration, etc. Type of integration is indicated for heterogeneous/hybrid integrated platforms, while those without the label are monolithic TFLN. Abbreviations: RL, rib-loaded; FB, film-bonding; NL, nonlinear; PPLN, periodically-poled lithium niobate; WG, waveguide; TLS, two-level-s”
High-efficiency and broadband on-chip electro-optic frequency comb generators (2021, neutral): “1d), realized in the TFLN platform [22].”