Measurements of stress-optic coefficient in polymer optical fibers.

This work has systematically measured the differential stress-optic coefficient, DeltaC, in a number of poly(methyl methacrylate) (PMMA) fibers drawn with different stress, ranging from 2 up to 27 MPa, and shows that DeltaC in PMMA fibers has a negative sign and ranges from -4.5 to - 4.5x10(-12) Pa(-1), depending on the drawing stress.