Effect of technological parameters on optical performance of fiber coupler

来源期刊：中南大学学报(英文版)2007年第3期

论文作者：帅词俊 段吉安 钟掘

文章页码：370 - 373

Key words：optical fiber coupler; fused biconical taper; technological parameter; optical performance

Abstract: To find out the influence of technological parameters on optical performance of fused optical fiber device, the fiber coupler was served as subject investigated by using the fused biconical taper machining as experimental setup. Fused fiber coupler’s optical performances such as insertion loss, excess loss, directivity and uniformity were tested with the optical test system that was constituted of tunable laser and optical spectrum analyzer. Especially the relationship between optical performance and drawing speed was investigated. The experimental results show that the optical performance is closely related to process conditions. At fused temperature of 1 200 ℃, there exists a drawing speed of 150 μm/s, which makes the device’s performance optimum. Out of this speed region, the optical performance drops quickly. At drawing speed of 200 μm/s, the excess loss is relatively small when the fused temperature is above 1 200 ℃. So the technological parameters have close relationship with optical performance of the coupler, and the good performance coupler can’t get until the drawing speed and fused temperature match accurately.

基金信息：the National Natural Science Foundation of China
New Century Excellent Talents in University of China
the Doctoral Program of Higher Education of China