Devitrification in annealed optical fiber

Author

Rose, A.H.

Author_Institution

Nat. Inst. of Stand. & Technol., Boulder, CO, USA

Volume

15

Issue

5

fYear

1997

fDate

5/1/1997 12:00:00 AM

Firstpage

808

Lastpage

814

Abstract

The decrease in transmittance of annealed optical fiber has been measured versus temperature and time. The annealing loss is due to the devitrification of the glass and OH absorption in the 1200 to 1500 nm wavelength region. Both loss mechanisms propagate primarily from the surface into the core. However, to increase the OH absorption significantly, annealing times greater than 10 h are required. Fibers heated from 1000 to 1300°C in an air atmosphere quickly devitrify and their transmittance approaches zero. Also, the current sensitivity of annealed fiber current sensors versus annealing time at 850°C has been measured. A decrease in the current sensitivity is attributed to devitrification in the fiber

Keywords

annealing; birefringence; electric current measurement; fibre optic sensors; optical fibre losses; optical fibre testing; optical glass; sensitivity; 1000 to 1300 C; 1200 to 1500 nm; OH absorption; air atmosphere; annealed fiber current sensors; annealed optical fiber; annealing loss; annealing time; current sensitivity; devitrification; loss mechanisms; transmittance; Absorption; Annealing; Glass; Optical fiber sensors; Optical fibers; Optical losses; Propagation losses; Temperature measurement; Time measurement; Wavelength measurement;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.580819

Filename

580819