Liu Ling, Jin Xian, Ning Tigang, Chen Lawrence R, Capmany José
Opt Express. 2021 Apr 26;29(9):14006-14015. doi: 10.1364/OE.423148.
Dual-frequency optoelectronic oscillators (OEOs) have potential applications in dual-band wireless networking and dual-parameter sensing systems. We propose a dual-frequency OEO incorporating a multiband microwave photonic filter (MPF). In particular, the two microwave signals are generated simultaneously in a single OEO cavity. By simply varying the parameters of optical spectral slicing and sampling (e.g., with a programmable optical filter) used to implement the MPF, we can readily achieve simultaneous tuning of the dual-frequency output, as well as alternate switching between single-frequency and dual-frequency output. The multi-passband nature of the MPF, enabled via optical spectral slicing, opens a path to multi-frequency OEO operation by scaling our scheme in the future. Such a structure provides a flexible way to generate simultaneously tunable and reconfigurable multi-frequency microwave signals.
双频光电振荡器（OEO）在双频无线网络和双参数传感系统中具有潜在应用。我们提出了一种包含多波段微波光子滤波器（MPF）的双频OEO。特别地，两个微波信号在单个OEO腔中同时产生。通过简单地改变用于实现MPF的光谱切片和采样参数（例如，使用可编程光学滤波器），我们可以轻松实现双频输出的同时调谐，以及单频和双频输出之间的交替切换。通过光谱切片实现的MPF的多通带特性，为未来通过扩展我们的方案实现多频OEO操作开辟了一条途径。这种结构提供了一种灵活的方式来生成同时可调谐和可重构的多频微波信号。
