Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4612
Title: Highly birefringent optical microfibers
Authors: Xuan, H
Ju, J
Jin, W 
Keywords: Germanium
Infrared lasers
Laser cladding
Silica
Single mode fibers
Issue Date: 15-Feb-2010
Publisher: Optical Society of America
Source: Optics express, 15 Feb. 2010, v. 18, no. 4, p. 3828-3839 How to cite?
Journal: Optics express 
Abstract: Highly birefringent (Hi-Bi) air-clad silica microfibers (MFs) with wavelength and sub-wavelength scale transverse dimensions are studied theoretically and experimentally. Hi-Bi MFs are taper-drawn from the standard SMF-28 single mode fibers that are "pre-processed" by "cutting away" parts of the silica cladding on opposite sides of the fiber with a femtosecond infrared laser. Such Hi-Bi MFs have approximately elliptical cross-sections and are approximated by a three-layer model comprising a small central Ge-doped region surrounded by an elliptical silica region and an air-cladding. Theoretical modeling shows that phase and group birefringence of the order 10⁻² can be achieved with such air-clad Hi-Bi MFs. Experiments with an air-clad elliptical fiber with a major diameter of 0.9μm and a minor/major diameter ratio of 0.9 demonstrated a group birefringence of ∼ 0.015, agreeing well with the theoretical predictions. The Hi-Bi MFs are useful for micron/nanoscale polarization maintaining transmission and phase-sensitive interferometric sensors.
URI: http://hdl.handle.net/10397/4612
ISSN: 1094-4087
DOI: 10.1364/OE.18.003828
Rights: © 2010 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-4-3828. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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