| 摘要 |
PURPOSE:To obtain the coupling method with small coupling loss by covering a bent part of an optical fiber with a scattering body or light reflector together with an optical signal element. CONSTITUTION:The optical fiber 1 is bent at a part 2 and this part is covered with a container 3. The light signal element (light source) 4 is fitted in the container 3. The internal surface of this container 3 is covered with the scattering body. In another way, the bent part is covered with reflectors 8 and 9 together with the optical signal element 4. Consequently, an optical signal is reflected in the container 3 or between the reflectors 8 and 9 several times without leaking out and illuminates the bent part 2 uniformly, and the optical signal is coupled with the optical fiber 1 to the same quantity of light in two directions, thereby reducing the coupling loss. |
