title: Effectively single-mode all-solid photonic bandgap fiber with large effective area and low bending loss for compact high-power all-fiber lasers.
abstract: 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.
authors: Optics and Electronics Laboratory, Fujikura Ltd., 1440 Mutsuzaki, Sakura 2858550, Japan.
authors: Masahiro
authors: M
authors: Kashiwagi
authors: Kunimasa
authors: K
authors: Saitoh
authors: Katsuhiro
authors: K
authors: Takenaga
authors: Shoji
authors: S
authors: Tanigawa
authors: Shoichiro
authors: S
authors: Matsuo
authors: Munehisa
authors: M
authors: Fujimaki