Stress measurements of fibers and preforms
- Resource Type
- Periodical
- Authors
- Ledoux, P.; Auge, J.; Boniort, L.Y.; Dupont, P.; Goudeau, J.; Saugrain, J.M.; Rousseau, J.C.; Mohanna, Y.
- Source
- Journal of Lightwave Technology J. Lightwave Technol. Lightwave Technology, Journal of. 7(8):1270-1274 Aug, 1989
- Subject
- Communication, Networking and Broadcast Technologies
Photonics and Electrooptics
Stress measurement
Preforms
Silicon compounds
Temperature
Optical fibers
Compressive stress
Internal stresses
Glass
Thermal stresses
Optical fiber dispersion
- Language
- ISSN
- 0733-8724
1558-2213
The authors point out the formation mechanism of axial stress, describes the method and the apparatus used for measurements, and presents the results obtained during a study of loss reduction on trapezoidal core 1.55- mu m dispersion-shifted fibers manufactured by the MCVD technique. It is concluded that the stress measurements on fiber are less accurate than those on preform (experimental dispersion reaches 15% instead of 5%). The various observations made from measurements on preform show that the axial stress is related to the index profile and that the core axial stress increases with the GeO/sub 2/ content. The measurements performed on fiber show that the level of stress is linearly dependent on the drawing tension and that the stress profile is related to the glass-transition temperature of the different materials. Furthermore, this method of stress measurement is complementary to the more standard index profile measurement on fiber or on preform.ETX