Relationship between rheological manufacturing process and optical performance of optical fiber coupler

来源期刊：中南大学学报(英文版)2006年第2期

论文作者：帅词俊 段吉安 钟掘

文章页码：175 - 179

Key words：optical fiber coupler; fused biconical taper; viscoelastic rheology

Abstract: Through theoretical analysis and experiments, the viscoelastic mechanical model of optical fiber coupler in the process of fused biconical taper was established, and the numerical analysis in non-uniform temperature field was made. The results show that the rheological parameters, such as drawing speed and fused temperature, have a tremendous influence on stress distribution and performance of optical fiber coupler, especially the influence of fused temperature. The change of fused temperature by 5℃can lead to the change of the maximum stress by 30% and stress difference by 20% in the same cross section. The change of temperature gradient by 3% can result in the change of stress difference by 90%. In the present condition of rheological technology, rheological defects such as crystallizations and microcracks are easy to generate in the optical fiber coupler.

基金信息：New Century Excellent Talents in University, China
the Doctoral Program of Higher Education, China