Birefringent all-solid hybrid microstructured fiber

Ryuichiro Goto*, Stuart D. Jackson, Simon Fleming, Boris T. Kuhlmey, Benjamin J. Eggleton, Kuniharu Himeno

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


We report the characterization of a birefringent all-solid hybrid microstructured fiber, in which the core-modes are guided by both the photonic bandgap (PBG) effect and total internal reflection (TIR). Due to the twofold symmetry, modal birefringence of 1.5 × 10-4 and group birefringence of 2.1 × 10-4 were measured at 1.31 μ, which is in the middle of the second bandgap. The band structure was calculated to be different from conventional 2-D PBG fibers due to the 1-D arrangement of high-index regions. The bend loss has a strong directional dependence due to the coexistence of the two guiding mechanisms. The fiber has two important properties pertinent to PBG fibers; spectral filtering, and chromatic dispersion specific to PBG fibers. The number of high-index regions, which trap pump power (by index guiding) when the fiber is used in cladding-pumped fiber lasers, is greatly reduced so that this fiber should enable efficient cladding pumping. This structure is suitable for linearly-polarized, cladding-pumped fiber lasers utilizing the properties of PBG fibers.

Original languageEnglish
Pages (from-to)18752-18763
Number of pages12
JournalOptics Express
Issue number23
Publication statusPublished - 10 Nov 2008
Externally publishedYes


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