Method for distinguishing between fiber crossing and fiber bonding in fiber network, involves illuminating point of fiber network with polarized light from direction that is more than certain degree

摘要

The method involves illuminating a point of the fiber network with polarized light (12) from a direction that is more than 15 degree, particularly 10 degree and not more than 5 degree from the normal line. The ellipsometric parameter of the directly reflected light (18) on the optical components (20,22) is determined. The gradient of the ellipsometric parameter is compared with a reference value. An independent claim is also included for a device for analyzing a fiber network.