Abstract
ABSTRACT The influence of extension lead at both sides and input polarization state on polarization transform performance of increscent-spinning birefringent fibre is calculated and examined. In the extension lead, the output polarization state is fluctuating with period relevant with the max-spin-rate or the beat length of birefringent fiber. It is found, the optimal input polarization state for the best output linear polarization is not the ideal circular polarization but a elliptical polarization related with the maximum spin rate, the optimal input linear polarization orientation is not in line but has a slight divergence angle with the birefringent axes of fiber, and if the input linear polarization is not perfect linear polarization, the output circular polarization would be nonlinearly degraded. These results have advisable meaning for the design, test and evaluation of the quarter wave plate made by the increscent-spinning birefringent fibre. Keywords: Birefringent fibre, beat length, polarization transform, spin rate, state of polarization, extension lead, increscent-spinning, Jones matrix
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