论文标题
双层光纤激光器或放大器内的温度分布
Temperature distribution inside a double-cladding optical fiber laser or amplifier
论文作者
论文摘要
详细检查了双层光纤激光器或放大器内的温度分布。传统上，核心中的量子缺陷被视为活跃光纤中加热的主要来源。然而，信号和泵的寄生吸收的贡献也可能起重要作用，尤其是对于低量子缺陷或辐射平衡的激光器和放大器。在本文中，考虑和分析了核心和内部层层的加热的贡献。特别是，表明，如果将纤维的最大耐受性表面温度相对于环境的最高耐受性为300摄氏度，以避免损坏纤维的外聚合物外覆层，则核心温度仅在0-5摄氏度的范围内升高，范围为0-5摄氏度的范围，相对于内部薄膜。但是，对于水冷纤维，核心温度可能高于内层高达50摄氏度，由于热光效应，可能会将单模芯变为多模。
The temperature distribution inside a double-cladding optical fiber laser or amplifier is examined in detail. Traditionally, the quantum defect in the core is taken to be the main source of heating in an active optical fiber. However, contributions from the parasitic absorption of the signal and the pump may also play an important role, especially for low quantum defect or radiation-balanced lasers and amplifiers. The contributions to the heating in both the core and the inner-cladding are considered and analyzed in general terms in this paper. In particular, it is shown that if the maximum tolerable surface temperature of the fiber relative to the ambient is taken to be 300 degrees Celsius to avoid damaging the fiber's outer polymer cladding, the core temperature rises only in the range of 0-5 degrees Celsius relative to the inner-cladding for an air-cooled fiber. However, for a water-cooled fiber, the core temperature can be higher than the inner-cladding by as much as 50 degrees Celsius, potentially changing a single-mode core to multimode due to the thermo-optic effect.
