Protective structure for an optical fiber coupler and method for protecting the same.

摘要

The invention relates to the protective structure for an optical fiber coupler G made from bare fiber parts (1b) of a plurality of optical fibers (1) therein, the bare fiber parts (1b) being formed by removing the coating (1a) of the plurality of optical fibers (1) and comprises a case (6) made of material having a coefficient of thermal expansion equivalent to optical fibers (1) and having space for enclosing the optical fiber coupler (G), and fiber supporting portions (8), being arranged inside of the space of the case (6) and being fused with the bare fiber parts (1b).