| 광섬유 인선 공정에 의해 생성된 실리카 광섬유내 점결함 |
| 안병길, 이종원, 김효태 |
| 요업기술원 전자부품·소재본부 |
| Fiber Drawing Induced Defects in Silica Optical Fiber |
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| ABSTRACT |
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The fiber drawing process induced defects in silica fiber have been investigated. This study has focused on the Oxygen Deficient Centers (ODCs) and E' centers induced by the fiberization process in low-OH silica fibers. To investigate those defects induced by the fiberization process, the optical absorption spectrum and Electron Spin Resonance (ESR) have both been employed. The concentration of Oxygen Deficient Centers (ODCs) and E' centers are increased by the fiber drawing process. The population of defects in the neck-down region has also been investigated. The most significant generation of defects during fiber drawing process has been shown to occur in this region of silica preform. The population of defects is higher on the edge region than in the center of neck-down region. |
| Key words:
Defect, Oxygen deficient center, E해 center, Optical absorption, Electron spin resonance |
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