Fabrication of a long-length and low-loss PMF and measurement of its properties

Abstract

In this paper, we describe a fabrication process of a long-length & low-loss polarization-maintaining fiber and present the measured optical properties of the polarization-maintaining fiber. The fabrication of the polarization-maintaining fiber is based on the pit-in jacket method, in which the core rod and stress application perform is fabricated by an updated PCVD process. Thus, polarization-maintaining fibers with the long-length not less than 15km can be obtained with a good longitudinal uniformity and a low-loss about 0.423dB/km@1310nm and 0.245dB/km@1550nm. The optical and geometrical properties of the polarization-maintaining fiber were measured. We also tested some special measurements. The results is well matched the specification of the present productions.