Measurement of the stress-optic coefficient of single-mode fibers using a magneto-optic method.

ABSTRACT

We present the magneto-optic method to measure the local birefringence of single-mode fibers. We use this method to study birefringence of various telecommunication fibers submitted to external twist. Analysis of measurements gives access to the linear and circular part of the birefringence. This allows to evaluate the stress-optic coefficient g with a good accuracy for each fiber.