Novel manufacturing method of optical fiber coupler^①

来源期刊：中南大学学报(英文版)2006年第3期

论文作者：帅词俊 段吉安 钟掘

文章页码：242 - 245

Key words：optical fiber coupler; coupling ratio; performance testing

Abstract: Based on the coupling mode theory that the coupling ratio of fiber coupler changes periodically with center distance of two optical fibers, a novel manufacturing method of optical fiber couplers was developed with fused biconical taper experimental system. Its fabrication process is that the fiber is fused but not stretched when light begins to split, and the reduction of diameter of fiber is dependent on the rheological characteristic of the fused fiberglass. The performance of the coupler was tested. The results show that the performance of the novel optical fiber coupler meets the performance expectations, and its diameter of coupling region (about 30μm) is twice as long as that of classical fused biconical taper coupler (about 16μm), so the default, that is, the device is easy to fracture, is restrained and the reliability is greatly improved.