| Autor: |
Dong, L., Cruz, J. L., Tucknott, J. A., Reekie, L., Payne, D. N. |
| Zdroj: |
Optics Letters; October 1995, Vol. 20 Issue: 19 p1982-1984, 3p |
| Abstrakt: |
Strong photosensitive gratings of both type I and II have been demonstrated in germanium-free tin-doped phosphosilicate fibers. An index change of ~1.2 × 10^−3 has been achieved in 40 s of exposure. The fibers have strong absorption (~0.8 dB/μm) at the writing wavelength of ~248 nm because of tin doping. This is the first time to our knowledge that such strong gratings have been written in a phosphorous-containing silica fiber without low-temperature hydrogenation and that type II gratings have been written in a germanium-free fiber. The tin-doping technique can be used to write gratings in rare-earth-doped phosphosilicate fibers and to produce low-N.A. fibers for mass production of strong single-pulse type II gratings during fiber pulling. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
