2009
DOI: 10.1364/ao.48.004985
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Accurate cross-sectional stress profiling of optical fibers

Abstract: A novel technique for determining two-dimensional, cross-sectional stress distributions in optical fibers and fiber-based devices is presented. Use of the Brace-Köhler compensator technique and a polarization microscope for the measurement of retardation due to stress-induced birefringence is described, along with the tomographic reconstruction process for the determination of stress. Measurements are performed on Corning SMF-28 fiber in an unperturbed section, a section near a cleaved end-face, and a section … Show more

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Cited by 25 publications
(20 citation statements)
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“…2a and 2b, this is not a case here, suggesting that the fundamental mode is merely being distorted by the stressinduced index modulation. The built-in mechanical stress associated with the composite structure of the fiber due to mismatch of the thermal expansion coefficients of core and cladding materials together bend-induced stress could lead to a distortion of the mode field and limit the output beam quality 20,25 . Furthermore, high doping with rare-earth dopants may lead to additional mechanical stress 26 .…”
Section: Discussionmentioning
confidence: 99%
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“…2a and 2b, this is not a case here, suggesting that the fundamental mode is merely being distorted by the stressinduced index modulation. The built-in mechanical stress associated with the composite structure of the fiber due to mismatch of the thermal expansion coefficients of core and cladding materials together bend-induced stress could lead to a distortion of the mode field and limit the output beam quality 20,25 . Furthermore, high doping with rare-earth dopants may lead to additional mechanical stress 26 .…”
Section: Discussionmentioning
confidence: 99%
“…Furthermore, a quantitative analysis of the intrinsic stress in the taper was carried out for a 1.6-mm thick piece cut from the wide part of the taper. The longitudinal mechanical stress was measured directly using a polarimetric setup with a spatial resolution of 20 m, described in 19,20 . The result of this measurement, shown in Fig.…”
Section: Impact Of Built-in Mechanical Stressmentioning
confidence: 99%
“…2c 44 ε yz , = the residual deformation tensor is characterized by a single unknown parameter T, i.e., from the hypothesis that is used in the analysis of residual stresses in glass [10][11][12]. From the physical point of view, residual stresses are caused by complex processes of crystalliza tion with the formation of inelastic deformations, for mation of dislocations, probably of a block structure in a single crystal [5,6].…”
Section: Determination Of Thermal Stressesmentioning
confidence: 99%
“…Applying integrated photo elasticity is connected with the condition of small rotation of the plane of the polarisation at the ray (of principal directions of the dielectric permittivity ten sor) [8,9]; therefore, its practical application is at present restricted by isotropic media [10]. The prob lem of determining axisymmetric thermoelastic stresses in long round cylinders by the results of illumi nation in the plane orthogonal to the cylinder axis [11] is still one of main models of determining stresses in waveguides [12]. In this model, it is assumed that the waveguide is in the state of plane deformation and the plane of the polarisation does not rotate during tomo graphic illumination of the sample.…”
Section: Introductionmentioning
confidence: 99%
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