Author(s): GENG Pengcheng, LI Changfeng, HAN Zhihui
Pages: 40-41,45
Year: 2016 Issue:  1
Journal: Tianjin Science & Technology
Keyword:  polarization crosstalk; birefringence; stress region size; erbium-ytterbium co-doped;
Abstract: The effects of stress region size,distance between stress zone and core,thermal expansion coefficient in the core zone on the birefringence and stress distribution of erbium-ytterbium co-doped polarization maintaining fiberswere studied by using the full vector finite element method.By improving ultrasonic drilling,Boron rod polishing and vacuum packaging processing technology,the processing level of the erbium-ytterbium co-doped polarization maintaining fiber preform was greatly enhanced.Finally,the polarization crosstalk of fiber was controlled under-23,dB/10,m and the bire-fringence was raised to more than 3.9×10-4,which provides both theory and technology foundation for the preparation of high birefringence,low polarization crosstalk of erbium-ytterbium co-doped polarization maintaining fibers.