attenuator variable optical coupling of optical fibers for

摘要

The variable optical attenuator, a coupling between the materials stiffener two fibers rendered variable by displacement of the first end of one of the fibers on an arc of circle passing through the first end of the fiber, comprises a parallelepipedal support 3 for the said fibres having a slot 6 parallel to its large faces in a first part of its length that it divides into two branches 7, 8 and a cylindrical hole 9 practice transversely in one of the branches 7, substantially at the level of the bottom of the slot, and open into the corresponding large face 4 of the support by defining the coupling area of the fibers fixed on the large face, and control means of the following 20, 25 in rotation of the branch 7 carrying the fibers, acting substantially at the level of the free end of this branch 7.