发明授权
US5855503A Fiber optic connector with improved loss performance and method for fabricating same 失效
具有改进的损耗性能的光纤连接器及其制造方法

Fiber optic connector with improved loss performance and method for
fabricating same
摘要:
An improved fiber optic cable connector is provided that exhibits a consistent return loss rating of -60 dB or better. The connector comprises matable connector housings that terminate the ends of respective optical cables to be joined. Within each housing, the optical fiber of the respective cable is secured within a ceramic ferrule that extends axially of the connector. The endface of each optical fiber is exposed at the end of its respective ferrule. The ends of the ferrules are ground and polished in such a way that the endfaces of the optical fibers exhibit a planar undercut with respect to the lip of the axial passageway in which the fibers are secured. When the ferrules are brought and pressed together end-to-end as the connectors are mated, the material of each ferrule compresses until the endfaces of the optical fibers engage each other with near null pressure. The result is the near elimination of pressure on the optical fiber itself, which avoids a density and index of refraction change at the junction and thus improves return loss performance. A method of fabricating such a fiber optic cable connector is also provided.
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