Lithium niobate thin film electro-optic modulator

Abstract: The linear electro-optic effect offers a valuable means to control light properties via an external electric field. Lithium niobate (LN), with its high electro-optic coefficients and broad optical transparency ranges, stands out as a prominent material for efficient electro-optic modulators. The recent advent of lithium niobate-on-insulator (LNOI) wafers has sparked renewed interest in LN for compact photonic devices. In this study, we present an electro-optic modulator utilizing a thin LN film sandwiched between top and bottom gold (Au) film electrodes, forming a Fabry–Pérot (F–P) resonator. This resonator exhibits spectral resonance shifts under an applied electric field, enabling efficient modulation of reflected light strength. The modulator achieved a 2.3 % modulation amplitude under ±10 V alternating voltage. Our approach not only presents a simpler fabrication process but also offers larger modulation amplitudes compared to previously reported metasurface based LN electro-optic modulators. Our results open up new opportunities for compact electro-optic modulators with applications in beam steering devices, dynamic holograms, and spatial light modulators, and more.

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• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Lithium niobate thin film electro-optic modulator ; volume:13 ; number:8 ; year:2024 ; pages:1503-1508 ; extent:6 ; Nanophotonics ; 13, Heft 8 (2024), 1503-1508 (gesamt 6)

Contributors, Places and Time

• Creator: Liu, Jikun ; Qu, Lun ; Wu, Wei ; Jin, Chunyan ; Chen, Zhihao ; Gu, Zhidong ; Liu, Weiye ; Wang, Chenxiong ; Zheng, Dahuai ; Liu, Hongde ; Cai, Wei ; Ren, Mengxin ; Xu, Jingjun

Further information

• DOI: 10.1515/nanoph-2023-0865
• URN: urn:nbn:de:101:1-2024040615472707495194
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.