基于互补金属氧化物半导体（CMOS）兼容技术的硅光子器件在超大规模单片光电集成，高速调制和切换以及高效的片外光耦合方面表现出诱人的性能。 本文介绍了我们小组中在快速硅光调制，对波长不敏感的光切换和有效的光耦合技术方面的最新进展。 已经开发出几种具有不同结构的CMOS兼容硅光耦合器，其最高耦合效率为65％。 实验上实现了具有亚纳秒级开关时间的宽带硅基光开关。 具有新型PN结的硅调制器的速度高达50 Gb s（-1）。

通过高频等离子体增强化学气相沉积（HF PECVD）在低温下沉积氢化非晶硅氮化物膜（SiNx：H）。 主要工作是研究等离子体频率和等离子体功率密度在确定薄膜特性（尤其是应力）中的作用。 通过傅立叶变换红外光谱（FTIR）获得有关膜中化学键的信息。 SiNx：H膜中的应力由衬底曲率测量确定。 结果表明，等离子体频率在控制SiNx：H薄膜的应力中起着重要作用。 对于以40.68MHz的等离子体频率生长的氮化硅层，观察到初始拉伸应力在400MPa-700MPa的范围内。 氮化硅膜的固有应力的测量结果表明，该应力量足够用于应变硅光子学中的膜应用。

A scheme for the photonic generation of frequency-tunable millimeter wave and terahertz wave signals based on a highly flat optical frequency comb is proposed and demonstrated experimentally. The frequency comb is generated using two cascaded phase modulators (PMs) and an electro-absorption modulato

The research on nanophotonic devices has made great progress during the past decades. It is the unremitting pursuit of researchers that realize various device functions to meet practical applications. However, most of the traditional methods rely on human experience and physical inspiration for structural design and parameter optimization, which usually require a lot of resources, and the performance of the designed device is limited. Intelligent algorithms, which are composed of rich optimized

Photonics-based radar with a photonic de-chirp receiver has the advantages of broadband operation and real-time signal processing, but it suffers from interference from image frequencies and other undesired frequency-mixing components, due to single-channel real-valued photonic frequency mixing. In this paper, we propose a photonics-based radar with a photonic frequency-doubling transmitter and a balanced in-phase and quadrature (I/Q) de-chirp receiver. This radar transmits broadband linearly fr

Tunable and integrated RF photonic phase shifter based on phase modulation and FBG filtering

Programmable RF photonic phase shifters based on FD-OP for optically controlled beamforming

Topological photonics has been opening exciting opportunities in recent optics research. In this feature issue, we present a collection of papers outlining state-of-the-art and application perspectives for this thriving field of research.

We present a simple approach based on photonic reservoir computing (P-RC) for modulation format identification (MFI) in optical fiber communications. Here an optically injected semiconductor laser with self-delay feedback is trained with the representative features from the asynchronous amplitude histograms of modulation signals. Numerical simulations are conducted for three widely used modulation formats (on–off keying, differential phase-shift keying, and quadrature amplitude modulation) for v

A novel scheme of photonic aided vector millimeter-wave (mm-wave) signal generation without a digital-to-analog converter (DAC) is proposed. Based on our scheme, a 20 Gb/s 4-ary quadrature amplitude modulation (4-QAM) mm-wave signal is generated without using a DAC. The experiment results demonstrat