Abstract

We have systematically measured the differential stress-optic coefficient, ΔC, in a number of poly(methyl methacrylate) (PMMA) fibers drawn with different stress, ranging from 2 up to 27MPa. 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 4.5×1012Pa1, depending on the drawing stress. Increase of the drawing stress results in greater initial fiber birefringence and lower ΔC.

© 2010 Optical Society of America

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