Fini John M, Nicholson Jeffrey W
OFS Laboratories, 19 Schoolhouse Rd., Somerset, New Jersey 08840, USA.
Opt Express. 2013 Aug 12;21(16):19173-9. doi: 10.1364/OE.21.019173.
Fibers with symmetric bend compensated claddings are proposed, and demonstrate performance much better than conventional designs. These fibers can simultaneously achieve complete HOM suppression, negligible bend loss, and mode area >1000 square microns. The robust single-modedness of these fibers offers a path to overcoming mode instability limits on high-power amplifiers and lasers. The proposed designs achieve many of the advantages of our previous (asymmetric) bend compensation strategy in the regime of moderately large area, and are much easier to fabricate and utilize.
提出了具有对称弯曲补偿包层的光纤，其性能比传统设计要好得多。这些光纤可以同时实现完全抑制高阶模、可忽略不计的弯曲损耗以及大于1000平方微米的模场面积。这些光纤强大的单模特性为克服高功率放大器和激光器的模式不稳定性限制提供了一条途径。所提出的设计在中等大面积的情况下实现了我们之前（非对称）弯曲补偿策略的许多优点，并且更容易制造和使用。
