Abstract
By combination of two defect structures with positive and negative birefringence, we design a holey fiber with a beat length that is less sensitive to wavelength. The influence of different structural parameters on birefringence of holey fiber is calculated by the finite-difference beam propagation method. A stable beat length can be achieved at some given wavelength window by adjusting the parameters. An almost uniform beat length with a greater than bandwidth at 1310 and wavelength windows is obtained, which is useful for the design and fabrication of fiber-optic wave plates with a wide band.
© 2009 Optical Society of America
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