Measurements of stress-optic coefficient and Young's modulus in PMMA fibers drawn under different conditions

Marcin K. Szczurowski, Tadeusz Martynkien, Gabriela Statkiewicz-Barabach, Lutful Khan, David J. Webb, Chenchun Ye, Janice Dulieu-Barton, Waclaw Urbanczyk

Research output: Chapter in Book/Published conference outputConference publication


We have systematically measured the differential stress-optic coefficient, ΔC, and Young's modulus, E, in a number of PMMA fibers drawn with different stress, ranging from 2 up to 27 MPa. Effect of temperature annealing on those parameters was also investigated. ΔC was determined in transverse illumination by measuring the dependence of birefringence on additional axial stress applied to the fiber. Our results show that ΔC in PMMA fibers has a negative sign and ranges from -4.5 to -1.5×10-12 Pa -1 depending on the drawing stress. Increase of the drawing stress results in greater initial fiber birefringence and lower ΔC. The dependence of ΔC and initial birefringence upon drawing stress is nonlinear and gradually saturates for higher drawing stress. Moreover, we find that ΔC is linearly proportional to initial fiber birefringence and that annealing the fiber has no impact on the slope of this dependence. On the other hand, no clear dependence was observed between the fiber drawing stress and the Young's modulus of the fibers as measured using microscopic digital image correlation with the fibers tensioned using an Instron tension tester.

Original languageEnglish
Title of host publicationPhotonic Crystal Fibers IV
EditorsKyriacos Kalli, Waclaw Urbanczyk
Place of PublicationBellingham, WA (US)
Number of pages8
ISBN (Print)978-0-8194-8187-0
Publication statusPublished - 14 May 2010
EventPhotonic Crystal Fibers IV - Brussels, Belgium
Duration: 14 Apr 201016 Apr 2010

Publication series

NameSPIE Proceedings
ISSN (Print)0277-786X
ISSN (Electronic)2410-9045


ConferencePhotonic Crystal Fibers IV

Bibliographical note

Marcin K. Szczurowski; Tadeusz Martynkien; Gabriela Statkiewicz-Barabach; Lutful Khan; David J. Webb; Chenchun Ye; Janice Dulieu-Barton and Waclaw Urbanczyk, "Measurements of stress-optic coefficient and Young's modulus in PMMA fibers drawn under different conditions", Proc. SPIE 7714, Photonic Crystal Fibers IV, 77140G (May 14, 2010).

Copyright 2010 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.



  • birefringence
  • polymer fibers
  • stress-optic coefficient
  • young's modulus


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