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    PLASTIC OPTICAL TERMINAL DEVICE
    1.
    发明专利
    PLASTIC OPTICAL TERMINAL DEVICE 失效

    公开(公告)号：JPH10282349A

    公开(公告)日：1998-10-23

    申请号：JP5064698

    申请日：1998-03-03

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ALOISIO CHARLES JOSEPH JR ,  KING WILTON WAYT ,  LAMPERT NORMAN ROGER

    IPC: G02B6/36 ,  G02B6/02 ,  G02B6/24 ,  G02B6/38 ,  G02B6/10

    Abstract: PROBLEM TO BE SOLVED: To provide an optical terminal device small in reflection, inexpensive and difficult to deform with the pressure. SOLUTION: An optical terminal device 100 is brought into contact with an optical fiber at end parts. The end part of the optical fiber is held in a cylindrical ferrule. The optical terminal device 100 reduces the reflection generated at a part where the optical path is suddenly changed in the refraction index (for example, a part where the optical fiber is brought into contact with the air gap). The optical terminal device 100 is provided with an approximately columnar part 110 which is projected from a back bone part 120 and held by the back bone part 120. The columnar part 110 and the back bone part 120 are cast of polymethyl-methacrylate (PMMA) as an integrated structure. Reflection of approximately -40dB can be realized with PMMA. The plastic material of the refractive index n=1.46±0.06 produces the reflection below approximately -34dB, which is allowable for many applications. In addition, the plastic material which is higher in the glass transition temperature Tg from approximately 80 deg.C is minimum in recess creep under the compressive load at high temperature.

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