论文标题
表面声学微波光子光子过滤器上的无蚀刻锂硅酸盐集成平台
Surface acoustic microwave photonic filters on etchless lithium niobate integrated platform
论文作者
论文摘要
绝缘子上的硝酸锂是集成微波光子学的有前途的平台，因为它具有超减速指导和光的高效调制。微波炉过滤器的芯片级集成对于5G/6G无线通信中的信号处理很重要。在这里，我们采用了连续体中结合状态的原理，用于在无蚀刻的尼贝特集成平台上进行低损坏的波形，并实现了高性能的微波光子光子过滤器。这些微波光子过滤器由由压电激发的表面声波调制的高质量光子微腔。在在Gigahertz频率下运行的制造过滤器中，实现了带宽窄至0.89 MHz的带宽范围狭窄的21 ns和通带延迟。我们的演示可能会在Niobate集成平台上打开新的应用程序，例如光通信，信号处理和梁转向。
Lithium niobate on insulator emerges as a promising platform for integrated microwave photonics because of its capability of ultralow-loss guidance and high-efficiency modulation of light. Chip-level integration of microwave filters is important for signal processing in the 5G/6G wireless communication. Here, we employed the principle of bound states in the continuum for low-loss waveguiding on an etchless lithium niobate integrated platform, and realized high-performance microwave photonic filters thereon. These microwave photonic filters consist of a high-quality photonic microcavity modulated by piezoelectrically excited surface acoustic waves. Acoustic time delays from 21 to 106 ns and passbands with bandwidth as narrow as 0.89 MHz were achieved in the fabricated filters operating at gigahertz frequencies. Our demonstration may open up new applications on the lithium niobate integrated platform, such as optical communication, signal processing, and beam steering.
