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首页> 外文期刊>Optical fiber technology >Thermal cooling analysis and validation of the ytterbium doped double clad fiber laser by a general analytic method
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Thermal cooling analysis and validation of the ytterbium doped double clad fiber laser by a general analytic method

机译：掺ped双包层光纤激光器的热分析和通用解析方法验证

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摘要

Long optical fiber is usually coiled on the surface of the substrate. Spreading thermal resistance is an important factor affecting thermal properties of optical fiber in this encapsulation way. This paper adopts a concise general analytic method to calculate spreading thermal resistance of the eccentric heat source formed in the rectangular channel. The on-site testing of active doped double clad fiber(DDCF)laser is also carried out. It is observed that the output light efficiency is high after the fiber loses heat through the plate which conforms to the needs of normal fiber laser light output efficiency of 70%-80%. The analytic value is in line with the changing trend of the experimental value, with the error of the temperature measurement points within +/- 8.8%. The third segment rules out the influence of the optical fiber coupler location and the temperature of coupling point. When the pump power ranges from 4.4 W to 31.07 W, the error range between the experiment and analytics is within - 4.14% to - 0.82%. The layout plan of the fiber has a certain effect on the temperature uniformity of the fiber laser. It is demonstrated that the analytic method and mathematical assumption are reliable in the cooling design of the optical fiber.
机译：长光纤通常缠绕在基板表面上。以这种封装方式，散布的热阻是影响光纤热性能的重要因素。本文采用简洁的一般分析方法来计算矩形通道中形成的偏心热源的扩展热阻。还对有源掺杂双包层光纤（DDCF）激光进行了现场测试。可以看出，光纤通过板子散热后出光效率很高，符合正常光纤激光出光效率70％-80％的需要。分析值与实验值的变化趋势一致，温度测量点的误差在+/- 8.8％之内。第三部分排除了光纤耦合器位置和耦合点温度的影响。当泵浦功率在4.4 W至31.07 W之间时，实验与分析之间的误差范围在-4.14％至-0.82％之内。光纤的布局方案对光纤激光器的温度均匀性有一定的影响。结果表明，该分析方法和数学假设在光纤冷却设计中是可靠的。

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