Injection Molded Fiber-Optic Connector Components for Single-Mode Fiber Applications

Hirotsugu SATO  Shuichi YANAGI  Yoshito SHUTO  Masayoshi OHNO  Shun-ichi TOHNO  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E82-C   No.8   pp.1578-1583
Publication Date: 1999/08/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Opto-Electronics
Keyword: 
fiber-optic connector,  ferrule,  split alignment sleeve,  injection molding,  LCP,  epoxy resin,  

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Summary: 
We successfully fabricated plastic ferrules and split alignment sleeves for single-mode fiber-optic connectors by the injection molding process. Liquid crystalline polymer (LCP) was used as the molding material for the ferrule. We introduced an eccentricity control mechanism into the ferrule mold and realized an eccentricity of less than 1 µm. As the molding material for the sleeve, thermosetting epoxy resin was used. Suitable mechanical properties were realized by employing appropriate dimensional design and the molding process. The optical characteristics of a system combining these plastic components are compatible with single-mode SC-type connectors and are also stable under hot and humid conditions.