论文标题
超高线性综合锂尼橡胶电气调节剂
Ultra-high-linearity integrated lithium niobate electro-optic modulators
论文作者
论文摘要
综合硅甲酸锂（LN）光子学是一个有前途的平台，用于未来芯片尺度的微波光子系统系统，由于其独特的电用量特性，低光学损失和出色的可扩展性。此类系统的关键推动器是高度线性的电磁调节器，可以忠实地将模拟电信号掩盖到光学信号中。在这项工作中，我们使用环形辅助的Mach-Zehnder干涉仪配置，在1 GHz时演示了具有超高无偶性动态范围（SFDR）为120.04 dB Hz4/5的整体整合LN调节器。 LN的内在线性电响应与优化的线性化策略之间的出色协同作用使我们能够完全抑制三阶间调整扭曲扭曲（IMD3）的立方术语，而无需主动反馈控制，从而使薄膜LN平台的先前结果相对于先前的结果约为20 dB。我们的超高线性LN调制器可能会成为未来大规模功能性光子光子集成电路的核心构建块，这是通过与其他高性能组件的进一步集成（如低损耗延迟线路，可调过滤器和LN平台上可用的相位变速器）。
Integrated lithium niobate (LN) photonics is a promising platform for future chip-scale microwave photonics systems owing to its unique electro-optic properties, low optical loss and excellent scalability. A key enabler for such systems is a highly linear electro-optic modulator that could faithfully covert analog electrical signals into optical signals. In this work, we demonstrate a monolithic integrated LN modulator with an ultrahigh spurious-free dynamic range (SFDR) of 120.04 dB Hz4/5 at 1 GHz, using a ring-assisted Mach-Zehnder interferometer configuration. The excellent synergy between the intrinsically linear electro-optic response of LN and an optimized linearization strategy allows us to fully suppress the cubic terms of third-order intermodulation distortions (IMD3) without active feedback controls, leading to ~ 20 dB improvement over previous results in the thin-film LN platform. Our ultra-high-linearity LN modulators could become a core building block for future large-scale functional microwave photonic integrated circuits, by further integration with other high-performance components like low-loss delay lines, tunable filters and phase shifters available on the LN platform.
