Residual stress relaxation in the core of optical fiber by CO2 laser irradiation
Optics Letters, Vol. 26, Issue 21, pp. 1657-1659 (2001)
http://dx.doi.org/10.1364/OL.26.001657
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Abstract
We observed residual stress relaxation by CO2 laser irradiation in the cores of optical fibers by direct stress measurement. It was demonstrated that the mechanical stress was fully relaxed by CO2 laser irradiation and that the remaining stress in the core was thermal stress that was due to a mismatch of the thermal expansion coefficients of the fiber core and cladding. The net core stresses after relaxation were 17, 68, and 203 MPa in Ge–B-codoped fibers drawn at 0.53, 1.38, and 3.48 N, respectively. Changes in the refractive indices of the cores as a result of residual stress relaxation were also estimated.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(060.2400) Fiber optics and optical communications : Fiber properties
(160.2290) Materials : Fiber materials
Citation
B. H. Kim, Y. Park, T.-J. Ahn, D. Y. Kim, B. H. Lee, Y. Chung, U. C. Paek, and W.-T. Han, "Residual stress relaxation in the core of optical fiber by CO2 laser irradiation," Opt. Lett. 26, 1657-1659 (2001)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-26-21-1657
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