title: Measurements of stress-optic coefficient in polymer optical fibers.
abstract: We have 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. DeltaC was determined in transverse illumination by measuring the dependence of birefringence on additional axial stress applied to the fiber. Our results show 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. Increase of the drawing stress results in greater initial fiber birefringence and lower DeltaC.
authors.affiliation: Institute of Physics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
authors.forename: Marcin K
authors.initials: MK
authors.lastname: Szczurowski
authors.forename: Tadeusz
authors.initials: T
authors.lastname: Martynkien
authors.forename: Gabriela
authors.initials: G
authors.lastname: Statkiewicz-Barabach
authors.forename: Waclaw
authors.initials: W
authors.lastname: Urbanczyk
authors.forename: Lutful
authors.initials: L
authors.lastname: Khan
authors.forename: David J
authors.initials: DJ
authors.lastname: Webb