Fused-Fiber-Array Structure and its Application to Polarizing Directional Coupler

Abstract

Fiber-optic devices such as polarizers and directional couplers are required for single-mode fiber communications and fiber sensor systems. In order to fabricate these fiber-optic devices, it is necessary to modify the fiber structures. Such modifications have been usually achieved by etching, polishing or fusion/tapering of the fibers.1)