Optical Characteristics and Reliability of Plastic Ferrules for MU-Type Simplified Receptacles

Yoshito SHUTO  Shunichi TOHNO  Shuichi YANAGI  Masayoshi OHNO  Ryo NAGASE  

IEICE TRANSACTIONS on Electronics   Vol.E87-C   No.8   pp.1302-1306
Publication Date: 2004/08/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on IS-EMD2003--Recent Technical Trend of Electro-Mechanical Devices)
Category: Connector and Sliding Contacts
optical connector,  injection molding,  ferrule,  liquid crystalline polymer,  

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Plastic ferrules for single-mode (SM) MU-type simplified receptacles are fabricated with a precise injection-molding technique using a liquid crystalline polymer (LCP). The fabricated plastic ferrules exhibit an eccentricity of < 0.6 µm and outer diameter variation of 1 µm. MU-type simplified plugs incorporating the plastic ferrules have an average insertion loss of 0.13 dB and a return loss of > 46 dB. The plastic ferrules exhibit good resistance in 500-cycle mating tests, and in vibration and impact tests as well. The initial optical characteristics are maintained during a temperature and humidity cycling test and a heat-cycling test.