A preform sleeving technique is demonstrated that allows the fabrication of single-mode polymer microstructured fiber with the smallest core and hole dimensions yet reported to our knowledge. For a fixed triangular hole pattern a range of fibers is produced by adjustment to the operating conditions of the draw tower. Numerical modeling is carried out for one of the fibers produced with a 570-μm external diameter, a core diameter of 2.23 μm, an average hole diameter of 0.53 μm, and an average hole spacing of 1.38 μm. This fiber was shown to be endlessly single mode.
© 2004 Optical Society of America
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(160.5470) Materials : Polymers
Joseph Zagari, Alexander Argyros, Nader A. Issa, Geoff Barton, Geoffrey Henry, Maryanne C. J. Large, Leon Poladian, and Martijn A. van Eijkelenborg, "Small-core single-mode microstructured polymer optical fiber with large external diameter," Opt. Lett. 29, 818-820 (2004)