提出了一种新的耦合技术———微型棱镜耦合技术 ,能有效地将激光二极管抽运光耦合进双包层光纤。这种技术具有简单、对光纤本身几乎无损伤等特点。介绍了微型棱镜耦合的原理和具体使用方法 ,理论计算所得的耦合效率约为 90 %。通过分析 ,对光源提出了相应要求 ,并指出了它的应用范围 A new coupling technique called micro-prism coupling technology is proposed, which can effectively pump laser diode light into double-clad fiber. This technique is simple and has almost no damage to the fiber itself. The principle and specific use of the micro-prism coupling are introduced. The theoretical coupling efficiency is about 90%. Through the analysis, the light source is put forward corresponding requirements, and pointed out its scope of application