Deformation of single-mode optical fibers under static longitudinal stress

Author

Bertholds, A. ; Dändliker, R.

Author_Institution

Institut de Microtechnique de 1́universite, Neuchâtel, Switzerland

Volume

5

Issue

7

fYear

1987

fDate

7/1/1987 12:00:00 AM

Firstpage

895

Lastpage

900

Abstract

The deformation of single-mode fibers resulting from a longitudinally applied static force has been measured experimentally by means of high resolution heterodyne interferometry and analyzed theoretically using the second-order theory of elasticity and the photoelastic effect. Both the elongation of the fiber and the phase change of light propagating through the fiber have been measured as a function of tensile force. The values of the elastic constants measured for fibers with pure silica core and B2O3doped cladding are $E = 6.41 \\times 10^{10}$ N/m²for the Young\´s modulus, $\\delta = -4.0$ for the nonlinearity constant of the longitudinal strain, and $\\beta = -2.3$ for the nonlinearity constant of the transverse strain. For unit elongations up to 0.3 percent, no creep, hysterisis, or relaxation effects have been observed within a resolution of one part in 10⁴.

Keywords

Heterodyning; Optical fiber measurements; Optical fiber mechanical factors; Optical fiber transducers; Optical interferometry; Elasticity; Force measurement; Optical fiber theory; Optical fibers; Optical interferometry; Optical propagation; Phase measurement; Photoelasticity; Strain measurement; Stress;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.1987.1075583

Filename

1075583