Aggarwal Samarth, Farmakidis Nikolaos, Dong Bowei, Lee June Sang, Wang Mengyun, Xu Zhiyun, Bhaskaran Harish
Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK.
Nanophotonics. 2024 Jan 26;13(12):2223-2229. doi: 10.1515/nanoph-2023-0654. eCollection 2024 May.
In the past decade, the proliferation of modern telecommunication technologies, including 5G, and the widespread adoption of the Internet-of-things (IoT) have led to an unprecedented surge in data generation and transmission. This surge has created an escalating demand for advanced signal processing capabilities. Microwave photonic (MWP) processors offer a promising solution to satisfy this unprecedented demand for data processing by capitalising on the high bandwidth and low latency achievable by optical systems. In this work, we introduce an integrated MWP processing unit for all-optical RF filtering using elemental antimony. We exploit the crystallisation dynamics of antimony to demonstrate a photonic leaky integrator, which is configured to operate as a first-order low-pass filter with a bandwidth of 300 kHz and ultra-compact footprint of 16 × 16 μm. We experimentally demonstrate the implementation of such a filter as an envelope detector to demodulate an amplitude-modulated signal. Finally, a discussion on achieving bandwidth tunability is presented.
在过去十年中，包括5G在内的现代电信技术的激增以及物联网（IoT）的广泛采用，导致数据生成和传输前所未有的激增。这种激增对先进的信号处理能力提出了不断增长的需求。微波光子（MWP）处理器提供了一种很有前景的解决方案，通过利用光学系统可实现的高带宽和低延迟来满足对数据处理的这一前所未有的需求。在这项工作中，我们介绍了一种使用元素锑进行全光射频滤波的集成MWP处理单元。我们利用锑的结晶动力学来演示一种光子泄漏积分器，该积分器被配置为作为带宽为300 kHz且超紧凑尺寸为16×16μm的一阶低通滤波器运行。我们通过实验证明了这种滤波器作为包络检波器来解调调幅信号的实现。最后，给出了关于实现带宽可调性的讨论。
