Wenlei Li, Xu Zhao, Jianghao He, Hao Yan, Bingcheng Pan, Zichen Guo, Xiang’e Han, Jingye Chen, Daoxin Dai, Yaocheng Shi, "High-speed 2D beam steering based on a thin-film lithium niobate optical phased array with a large field of view," Photonics Res. 11, 1912 (2023)
- Photonics Research
- Vol. 11, Issue 11, 1912 (2023)
Fig. 1. (a) Schematic of the proposed TFLN OPA. (b) Cross-sectional view of the device. (c) Simulated optical mode field and static electrical field distribution in the modulation region. (d) Optical microscope image of the fabricated slab grating antenna.
Fig. 2. (a) Simulated microwave mode profile. Calculated frequency dependence of (b) characteristic impedance, (c) microwave index, and (d) microwave loss.
Fig. 3. (a) Calculated far-field distribution of the proposed OPA in the phase tuning direction. (b) Calculated steering angle varying with wavelength in the wavelength tuning direction.
Fig. 4. (a) Optical microscope image of the fabricated chip. (b) Image of electrical and optical packaged chip.
Fig. 5. (a) Schematic of the measurement setup for V π S 21
Fig. 6. Schematic diagram of the far-field characterization setup.
Fig. 7. (a) Image of far-field distribution and (b) measured optical power distribution versus angle in the phase tuning direction. (c) Image of far-field distribution and (d) measured optical power distribution versus angle in the wavelength scanning direction. (e) Measured beam width.
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Table 1. Performance Comparison of the Reported High-Speed OPAs
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