We propose a $1\times2$ electro-optic miniature optical switch based on mode deflection of lithium-niobate (LN) annealed proton exchange waveguides with microstructured electrodes. Our fabricated device consists of LN waveguides covered with isosceles-triangle-shaped array electrodes, a horn-shaped input waveguide, and two tapered output waveguides. At a driving voltage of 40 V, the two-modes can switch between two output ports with an extinction ratio of 17.39 dB at the wavelength of 1530 nm. The switching speed is 22 ns. This miniature mode switch could find applications in signal processing and high-speed optical communication networks.

中文翻译：

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基于铌酸锂波导电光模偏转的光开关

我们提出了一种基于铌酸锂 (LN) 退火质子交换波导和微结构电极的模式偏转的 1\times2$ 电光微型光开关。我们制造的设备由覆盖有等腰三角形阵列电极的 LN 波导、喇叭形输入波导和两个锥形输出波导组成。在40 V的驱动电压下，两种模式可以在两个输出端口之间切换，在1530 nm波长处的消光比为17.39 dB。开关速度为 22 ns。这种微型模式开关可以在信号处理和高速光通信网络中找到应用。