Thin-film lithium niobate polarization modulator without polarization diversity

Sun, Xuerui; Wu, Yinan; Lu, Chuanyi; Li, Hao; Ye, Xiaona; Zhang, Yuting; Liu, Shijie; Zheng, Yuanlin; Chen, Xianfeng

doi:10.1364/oe.468533

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…Table 1 and 2 summarize the progress of different TFLN modulators with the MZI structure. [ 5,6,12,15,26–107 ] Figure summarizes the half‐wave voltage, device length, and bandwidth of etched and non‐etched TFLN modulators. Both these two kinds of modulators can realize a very high bandwidth.…”

Section: Mzi‐based Tfln Modulatormentioning

confidence: 99%

Compact and Efficient Thin‐Film Lithium Niobate Modulators

Chen,

Gao,

Lin

et al. 2023

Advanced Photonics Research

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Thin‐film lithium niobate (TFLN) modulators have garnered significant attention in the field of integrated photonics due to their ability to manipulate light. Numerous TFLN modulators have been demonstrated over the past few years, with speed records consistently being broken. However, due to the low refractive index contrast and anisotropic properties of TFLN, modulators based on this material feature larger device sizes and lower efficiency. A more compact and efficient modulator is important, as it is required for future dense integration and low power consumption applications. There have been some reports on how to reduce device size, and research is ongoing. A comprehensive summary can help individuals understand the current state of research and existing problems. In this review, we provide an overview of recent advancements in TFLN modulator technology, focusing on compactness and efficiency. Herein, various types of modulators, such as the Mach–Zehnder interferometer, Michelson interferometer, resonator cavity, and Z‐cut type modulators, are discussed. Moreover, potential improvement strategies and applications for compact and efficient TFLN modulators in advanced photonic systems are explored. In conclusion, in this review, the recent achievements in compact and efficient TFLN modulators are summarized and their significance in various optoelectronic applications is emphasized.

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Section: Mzi‐based Tfln Modulatormentioning

confidence: 99%

Compact and Efficient Thin‐Film Lithium Niobate Modulators

Chen,

Gao,

Lin

et al. 2023

Advanced Photonics Research

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“…Diverse applications have been demonstrated with PICs, including high-speed optical communication, signal processing, computing, and emerging technologies in quantum, biomedicine, and sensing 23 – 28 Particularly, the advent of lithium niobate on insulator (LNOI) has propelled PICs as a promising platform for future high-speed electro-optic (EO) integrated devices, 29 such as high-performance modulators, 30 , 31 frequency combs, 32 , 33 polarization controllers, 34 , 35 and quantum optics circuits 36 , 37 . However, the full utilization of the DOFs of light in traditional two-dimensional PICs has not been realized, thereby limiting their application in optical information technologies.…”

Section: Introductionmentioning

confidence: 99%

Gigahertz-rate-switchable wavefront shaping through integration of metasurfaces with photonic integrated circuit

Zhong,

Zheng,

Sun

et al. 2024

Adv. Photon.

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.Achieving spatiotemporal control of light at high speeds presents immense possibilities for various applications in communication, computation, metrology, and sensing. The integration of subwavelength metasurfaces and optical waveguides offers a promising approach to manipulate light across multiple degrees of freedom at high speed in compact photonic integrated circuit (PIC) devices. Here, we demonstrate a gigahertz-rate-switchable wavefront shaping by integrating metasurface, lithium niobate on insulator photonic waveguides, and electrodes within a PIC device. As proofs of concept, we showcase the generation of a focus beam with reconfigurable arbitrary polarizations, switchable focusing with lateral focal positions and focal length, orbital angular momentum light beams as well as Bessel beams. Our measurements indicate modulation speeds of up to the gigahertz rate. This integrated platform offers a versatile and efficient means of controlling the light field at high speed within a compact system, paving the way for potential applications in optical communication, computation, sensing, and imaging.

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