Electro-optic deflection in a lithium niobate quasi-single mode waveguide with microstructured electrodes.

Author(s) Tian, F.; Lu, H.; Sui, Z.; Tao, J.; Dong, J.; Zhang, X.; Qiu, W.; Guan, H.; Yu, J.; Zhu, W.; Luo, Y.; Zhang, J.; Chen, Z.
Journal Opt Express
Date Published 2018 Nov 12
Abstract

We propose an electro-optic mode deflection device based on an annealed proton exchange (APE) waveguide in lithium niobate, associated with isosceles-triangle-shaped array electrodes and a horn-shaped input waveguide. The input waveguide is tapered down to ensure that the output of the device has a good beam quality, i.e., a quasi-single mode in this case. This new device allows beam deflection at a relative low voltage and large deflection angle. At an APE-waveguide width of 80 μm, mode deflections of 0.265 and 0.240 μm/V are obtained for 1064 and 980 nm, respectively. This beam deflection device can be applied in high-speed optical switch, and beam smoothing of a high-power laser, etc.

DOI 10.1364/OE.26.030100
ISSN 1094-4087
Citation Tian F, Lu H, Sui Z, Tao J, Dong J, Zhang X, et al. Electro-optic deflection in a lithium niobate quasi-single mode waveguide with microstructured electrodes. Opt Express. 2018;26(23):30100-30107.

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