Abstract

It is important to measure quantitively the initial compressive strain and fiber axis deformation in plastic-jacketed optical fibers induced by the jacketing process,¹ since these are serious factors which are related to the thermal characteristics for optical cable design. Usually thermal characteristics of fiber strain in plastic-jacketed optical fibers are measured by using the phase shift of the modulation signal or delay time of the launched optical pulse. Our measurements used the birefringence change in nylon-jacketed high-birefringence optical fibers.

© 1985 Optical Society of America