Acta Optica Sinica, Volume. 26, Issue 9, 1319(2006)
Polarization Properties of HighIndexEllipticalCore Bragg Fibers
The polarization properties of highindexellipticalcore Bragg fibers are investigated via fullvector finite element method with anisotropic perfectly matched layer boundary conditions. The dependence of mode birefringence and group velocity walkoff on the fiber structural parameters has been fully analyzed. It is shown that the birefringence of highindexellipticalcore Bragg fiber is on the magnitude order of 10-2, which is at least ten times that of the conventional polarizationmaintaining fiber, and the walkoff parameters exhibit quite unusual wavelength dependence different from that of conventional polarizationmaintaining fibers. These unusual properties allow the flexible combination of high birefringence and large or zero walkoff at suitable wavelengths,and it contains potential application value. And the influence on the polarization properties imposed by the refractiveindex variance in the lowindex region is also briefly discussed. The results is helpful for the design of microstructured polarization-maintaining fibers with high performance.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Polarization Properties of HighIndexEllipticalCore Bragg Fibers[J]. Acta Optica Sinica, 2006, 26(9): 1319