Kashiwagi Masahiro, Saitoh Kunimasa, Takenaga Katsuhiro, Tanigawa Shoji, Matsuo Shoichiro, Fujimaki Munehisa
Optics and Electronics Laboratory, Fujikura Ltd., 1440 Mutsuzaki, Sakura 2858550, Japan.
Opt Express. 2012 Jul 2;20(14):15061-70. doi: 10.1364/OE.20.015061.
An effectively single-mode all-solid photonic bandgap fiber with large effective area and low bending loss for compact high-power all-fiber lasers is fully investigated. The pitch dependencies of effective area, bending loss, and effectively single-mode operation are discussed numerically and experimentally. The calculation results indicate that an effectively single-mode all-solid photonic bandgap fiber with an effective area of more than 500 μm(2) and a bending loss of less than 0.1 dB/m at a bending radius of 10 cm can be realized by choosing optimum fiber parameters. In a fabricated effectively single-mode all-solid photonic bandgap fiber with 48.0 μm core, the effective area of 712 μm(2), the effectively single-mode operation, and the bending loss of less than 0.1 dB/m at a bending radius of 10 cm are achieved simultaneously at 1064 nm.
针对紧凑型高功率全光纤激光器，对一种具有大有效面积和低弯曲损耗的有效单模全固态光子带隙光纤进行了全面研究。通过数值和实验讨论了有效面积、弯曲损耗和有效单模运行对节距的依赖性。计算结果表明，通过选择最佳光纤参数，可以实现有效面积大于500μm²且在弯曲半径为10cm时弯曲损耗小于0.1dB/m的有效单模全固态光子带隙光纤。在制造的具有48.0μm纤芯的有效单模全固态光子带隙光纤中，在1064nm波长下同时实现了712μm²的有效面积、有效单模运行以及在弯曲半径为10cm时小于0.1dB/m的弯曲损耗。
