Effects of drawing tension on the photosensitivity of Sn-Ge- and B-Ge-codoped core fibers

The influence of drawing tension on the formation of Bragg gratings in B-Ge- and Sn-Ge-codoped core fibers is investigated by transmission and stress measurements. With increasing drawing tension, the axial stress is reduced in the B-Ge-codoped core but increased in the Sn-Ge-codoped core. A higher drawing tension leads to a photosensitivity enhancement and an increase of the core stress during the grating formation in B-Ge-codoped fibers. For Sn-Ge-codoped fibers, increased drawing tension results in an UV-induced stress decrease accompanied by a reduction of the photosensitivity. The results are discussed on the basis of an UV-induced compaction of the core network


Published in:
Optics Letters, 23, 17, 1402-4
Year:
1998
Publisher:
Opt. Soc. America
Keywords:
Note:
Inst. of Appl. Opt., Fed. Inst. of Technol., Lausanne, Switzerland
Copyright 1998, IEE
6081410
0146-9592
drawing tension
Sn-Ge-codoped core fiber
B-Ge-codoped core fiber
Bragg grating
optical transmission
axial stress
photosensitivity
UV compaction
ODC
DID
Laboratories:




 Record created 2009-01-20, last modified 2018-01-28


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