量子点在光放大器中的应用进展

Applications Progress of Quantum Dots in Optical Amplifiers

新型的量子点光放大器以宽带宽、高增益、低噪声和高功率放大等优点而得到发展和应用。从量子点的结构和主要特性出发,概述了常用的几种量子点在光放大器方面的研究和应用状况。随后,介绍了量子点半导体光放大器和量子点光纤放大器的基本结构以及工作机理,简述了CdSe/ZnS量子点光纤的光谱特性,提出了进一步发展量子点光放大器有待解决的问题,展望了量子点在光通信领域的应用前景。

Novel quantum-dot optical amplifiers obtain development and applications, because they possess the advantages of broader bandwidth, higher gain, lower noise and higher power amplification. Starting from the structure and main characteristics of quantum dots, this paper summarizes the research and application status of several common quantum dots in optical amplifiers. Whereafter, the basic structure and working mechanisms are emphatically introduced for the quantum-dot semiconductor optical amplifiers and fiber amplifiers. The spectral characteristics of CdSe/ZnS quantum-dot optical fiber are briefly described. Some problems awaiting solution to further developing quantum-dot optical amplifiers are proposed and an outlook is given for quantum-dots applications in optical communication field.