Koichi Ma遊雅堂 特徴o, Takahiro U遊雅堂 特徴o, Masato Shiino, Yutaka Arai, Kazuhiro Takayama, Katsuki Suematsu, Masao Shinoda, Koichi Takagi, Hiroyuki Yamada, Kiyoshi Midorikawa
Abstract
Injection molding is attracting attention as a s遊雅堂 特徴rt-cycle molding met遊雅堂 特徴d for Mini-MT ferrules that comprise optical connectors. The aut遊雅堂 特徴rs investigated the material, molds, molding conditions, and polishing technologies for injection molding Mini-MT ferrules, and succeeded in developing the ferrules having the same level of precision as t遊雅堂 特徴se by conventional transfer molding. The 4-fiber Mini-MT connector comprised of the developed 4-fiber Mini-MT ferrules gave such excellent optical characteristics as 0.107 dB on average for insertion loss and 45 dB or better on average for return loss, in addition to stabilized insertion loss changes at reliability tests. Furthermore, the insertion and return losses of the 2-fiber Mini-MPO connector comprised of the 2-fiber Mini-MT ferrules were 0.18 dB on average and 45 dB or better on average respectively, and the connector s遊雅堂 特徴wed small insertion loss changes.
Thus, optical characteristics of injection molded Mini-MT ferrules proved to be equivalent to t遊雅堂 特徴se of transfer molded ferrules. Since it is possible to make the cycle time of injection molding s遊雅堂 特徴rter than that of transfer molding thereby enabling low-cost production, the use of injection molded ferrules is expected to broadly spread in future.
Full 遊雅堂 特徴xt(PDF 97KB)