Influences of polishing on return loss of optical fiber connectors

来源期刊：中南大学学报(英文版)2005年第3期

论文作者：段吉安 刘德福 钟掘

文章页码：320 - 323

Key words：optical fiber connector; polishing; return loss; optical fiber undercut

Abstract: With Al₂O₃and SiO₂as polishing medium, under different polishing conditions, e.g. with different polishing pressure, polishing time and polishing fluid, the influences of polishing treatment on the return loss of optical fiber connectors were investigated. The return loss of optical fiber connectors is 32 38 dB before polishing. The results show that dry polishing(i.e. no polishing fluid) with Al₂O₃ has less influence on return loss of optical fiber connectors, while dry polishing with SiO₂reduces return loss to about 20 dB because of the end-face of optical fiber contaminated. The wet polishing(i.e. using distilled water as polishing fluid) with Al₂O₃ or SiO₂can increase return loss to 45 50 dB, but wet polishing with Al₂O₃ may produce optical fiber undercut depth of 80 140 nm. Wet polishing with SiO₂ should be preferentially selected for optical fiber connectors and polishing time should be controlled within 20 30 s.