| 摘要 |
A mass-producible optical attenuation fiber assembly is provided with a first optical fiber with a predetermined attenuation, a second optical fiber connected to a first end of the first optical fiber and a ferrule for fixedly holding the other end of the first optical fiber. In this optical attenuation fiber assembly, the first optical fiber is doped with impurities to achieve a predetermined first attenuation and shortened to obtain a predetermined second attenuation. In the optical attenuation fiber assembly, the second optical fiber may also be cut to a fixed length and the cut edge portion of the second optical fiber may be fixed to another ferrule and polished. The latter ferrule is coupled to the former ferrule through an alignment sleeve.
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