混沌激光具有宽频谱、类噪声、低相干等特性，在保密光通信、高速随机数、混沌激光雷达、混沌光时域反射仪和分布式光纤传感等领域具有重要的应用价值。光子集成混沌激光器是混沌激光应用的核心器件，具有体积小、性能稳定、成本低等优点。综述了近十年来光子集成混沌半导体激光器的进展及其主要应用。首先介绍了混沌半导体激光器的集成方式；接着介绍了光子集成混沌半导体激光器的分类，根据其扰动方式讨论了直腔单反馈、多腔反馈、环形腔反馈、二维外腔反馈、互注入等结构，并对比分析了各自的优势与输出特性；然后介绍了光子集成混沌半导体激光器在光时域反射仪、保密光通信和高速随机数产生等方面的应用；最后，讨论了光子集成混沌激光器的关键集成技术、时延特征抑制及间歇混沌的特性。

Chaotic laser has been widely applied in the fields of secure optical communication, random number generation, chaotic lidar, chaotic optical time domain reflector and distributed optical fiber sensing due to its characteristics of wide-spectrum, noise-like, low-coherence and so on. Photonic integrated chaotic semiconductor laser is a kind of chaotic laser which is small in size, stable and low-cost. The progress of photonic integrated chaotic semiconductor laser and its main applications in recent ten years were reviewed. Firstly, the photonic integrated methods of chaotic semiconductor laser were introduced. Then, the classification of photonic integrated chaotic semiconductor lasers was demonstrated. According to the perturbation mode, the external cavity structures including straight cavity, multiple-cavity, ring cavity, two-dimensional cavity and mutual injection were discussed. The advantages and characteristics of these devices were compared. Furthermore, the applications of photonic integrated chaotic semiconductor lasers in optical time domain reflectometer, secure optical communication and random number generation were introduced. Finally, the key integration techniques, time delay signature and intermittent chaos in photonic integrated chaotic laser were discussed.