Optical Fiber Cable and Connector Technology for FTTH Networks

Shigeru TOMITA  Michito MATSUMOTO  Tadashi HAIBARA  Tsuyoshi NAKASHIMA  Mitsuru KIHARA  

IEICE TRANSACTIONS on Communications   Vol.E75-B   No.9   pp.862-870
Publication Date: 1992/09/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Fiber-Optic Subscriber Loop)
optical fiber,  optical connector,  network architecture,  and optical fiber cable,  

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We study the most appropriate network architecture for constructing FTTH (Fiber To The Home) networks. We conclude that the Single Star network is the most advantageous for supporting the various services required by subscribers who use broadband signal such as B-ISDN (Broadband-Integrated Services Digital Network). We also study high fiber count cable and low-loss connector which are needed for this network and clarify their requirements. We also show the cable structure, connector structure and connection loss reduction method, which satisfy these requirements. We describe a 4,000-fiber cable with a new structure, a 1,000-fiber one-touch connector, a 40-fiber unit connector and TEC-fiber (Thermally-diffused Expanded Core fiber) which reduces connection loss.