title: Endlessly single-polarization single-mode holey fibers with low confinement loss.
abstract: We present a novel structure for holey fibers (HFs) with endlessly single-polarization single-mode characteristics, which is realized by introducing four elliptical airholes arranged in a hexagonal matrix in the core region. The validation of the design is done by use of a full-vectorial finite element method. We exhibit one typical design that can deliver a single-polarization single-mode region of more than 2400 nm with a confinement loss level lower than 0.01 dB/km. We have also shown that the persevered polarization state possesses a wide wavelength band of flat dispersion behavior. As a consequence, such HFs are useful in high-speed communication systems or optical-fiber sensors since they are free of polarization mode dispersion and simultaneously immune to cross-talk effect.
authors.affiliation: Shanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, China.
authors.forename: Dunke
authors.initials: D
authors.lastname: Lu
authors.forename: Xuedian
authors.initials: X
authors.lastname: Zhang
authors.forename: Min
authors.initials: M
authors.lastname: Chang
authors.forename: Ge
authors.initials: G
authors.lastname: Wang
authors.forename: Lina
authors.initials: L
authors.lastname: Pan
authors.forename: Songlin
authors.initials: S
authors.lastname: Zhuang