Abstract
The optical absorption spectra of pure silica core optical fibers were measured in the region from 200nm to 600nm. An absorption band at 340nm is observed in samples manufactured by a certain plasma method, and the tail of this band strongly affects the visible range. A 245nm band, believed to be caused by oxygen vacancies, is observed in low OH samples. This band is observed in samples which show no peroxy-radical related ESR signals. It seems that when the sample lacks oxygen, a 245nm band is observed, while it has too-much oxygen, peroxy-radicals are observed. In OH-rich samples neither 245nm band nor peroxy-radicals are observed. This seems to be the effect of either OH termination or manufacturing method.
| Original language | English |
|---|---|
| Pages | 229-232 |
| Number of pages | 4 |
| Publication status | Published - 1985 Dec 1 |
ASJC Scopus subject areas
- Engineering(all)