We outlined the history of optic amplifiers, analysed the advantages and disadvantages of EDFA and FRA, and the application area of rare earth doped tellurite glass amplification fiber.

• 摘要文章介绍了光纤放大的研究历史，分析了掺铒光纤放大器(EDFA)和光纤拉曼放大器的优势和劣势，指明了稀土掺杂碲酸盐放大光纤的应用领城。