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    Silica core optical fiber for maintaining plane of polarization
    201.
    发明专利
    Silica core optical fiber for maintaining plane of polarization 失效
    用于维护极化平面的硅芯芯光纤

    公开(公告)号：JPS59178410A

    公开(公告)日：1984-10-09

    申请号：JP5429983

    申请日：1983-03-30

    Applicant: Hitachi Cable Ltd

    Inventor： KATOU MASAAKI ,  MIKOSHIBA KOUICHI

    IPC: C03B37/012 ,  C03C13/04 ,  G02B6/024 ,  G02B6/10

    CPC classification number: G02B6/105 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/10 ,  C03C2201/28

    Abstract: PURPOSE:To provide a low loss and good resistance to radiation by specifying the respective refractive indices of a core, clad and elliptical jacket and the size in the prescribed part at specific values and forming the clad of silica glass contg. fluorine and P2O5. CONSTITUTION:An optical fiber for maintaining plane of polarization has the relation expressed by the inequality I where the respective refractive indices of a core 21, a clad 22 and an elliptical jacket 23 are designated as n1, n2, n3 and has the relation expressed by the inequality II where the radius of the core is designated as T, the thickness of the clad as delta1T, and the total min. thickness of the clad and the elliptical jacket as delta2T. Such relations are obtd. by forming the core 21 and the support 24 of high purity silica, making the clad 22 into the constitution consisting essentially of SiO2 and contg. fluorine and P2O5 and making the jacket 23 into the constitution consisting essentially of SiO2 and contg. P2O5 and B2O3. A low loss and good resistance to radiation are thus obtd.

    Abstract translation: 目的：通过指定芯，包层和椭圆形夹套的相应折射率和规定部分的特定值的尺寸，形成二氧化硅玻璃的包层，从而提供低损耗和良好的耐辐射性。 氟和P2O5。 构成：用于维持偏振面的光纤具有由芯21，包层22和椭圆形护套23的折射率指定为n1，n2，n3的不等式I表示的关系，并且具有由 其中芯的半径被指定为T，包层厚度为delta1T的不等式II和总分。 包层和椭圆形外套的厚度为Δ2T。 这种关系是有道理的。 通过形成高纯度二氧化硅的芯21和支撑体24，使得包层22成为基本上由SiO 2组成的结构。 氟和P 2 O 5，并且将夹套23制成基本上由SiO 2组成的结构。 P2O5和B2O3。 因此，低损耗和良好的耐辐射性得到了证实。

    Silica core optical fiber for maintaining plane of polarization
    202.
    发明专利
    Silica core optical fiber for maintaining plane of polarization 失效
    用于维护极化平面的硅芯芯光纤

    公开(公告)号：JPS59178408A

    公开(公告)日：1984-10-09

    申请号：JP5429783

    申请日：1983-03-30

    Applicant: Hitachi Cable Ltd

    Inventor： KATOU MASAAKI ,  MIKOSHIBA KOUICHI

    IPC: C03B37/012 ,  C03C13/04 ,  G02B6/024 ,  G02B6/10

    CPC classification number: G02B6/105 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/10 ,  C03C2201/28

    Abstract: PURPOSE:To provide a low loss and good resistance to radiation by specifying the respective refractive indices of a core, clad and elliptical jacket and the size in the prescribed part at specific values and forming the clad of silica glass contg. fluorine and B2O3. CONSTITUTION:An optical fiber for maintaining plane of polarization has the relation expressed by the inequality I where the respective refractive indices of a core 21, a clad 22 and an elliptical jacket 23 are designated as n1, n2, n3 and has the relation expressed by the inequality II where the radius of the core is designated as T, the thickness of the clad as delta1T, and the total min. thickness of the clad and the elliptical jacket as delta2T. Such relations are obtd. by forming the core 21 and the support 24 of high purity silica, making the clad 22 into the constitution consisting essentially of SiO2 and contg. fluorine and B2O3 and making the jacket 23 into the constitution consisting essentially of SiO2 and contg. P2O5 and B2O3. A low loss and good resistance to radiation are thus obtd.

    Abstract translation: 目的：通过指定芯，包层和椭圆形夹套的相应折射率和规定部分的特定值的尺寸，形成二氧化硅玻璃的包层，从而提供低损耗和良好的耐辐射性。 氟和B2O3。 构成：用于维持偏振面的光纤具有由芯21，包层22和椭圆形护套23的折射率指定为n1，n2，n3的不等式I表示的关系，并且具有由 其中芯的半径被指定为T，包层厚度为delta1T的不等式II和总分。 包层和椭圆形外套的厚度为Δ2T。 这种关系是有道理的。 通过形成高纯度二氧化硅的芯21和支撑体24，使得包层22成为基本上由SiO 2组成的结构。 氟和B 2 O 3，并将夹套23制成基本上由SiO 2组成的结构。 P2O5和B2O3。 因此，低损耗和良好的耐辐射性得到了证实。

    Optical fiber for maintaining plane of polarization
    203.
    发明专利
    Optical fiber for maintaining plane of polarization 失效
    用于维护极化平面的光纤

    公开(公告)号：JPS59178407A

    公开(公告)日：1984-10-09

    申请号：JP5429683

    申请日：1983-03-30

    Applicant: Hitachi Cable Ltd

    Inventor： KATOU MASAAKI ,  MIKOSHIBA KOUICHI

    IPC: C03B37/012 ,  C03C13/04 ,  G02B6/024 ,  G02B6/10

    CPC classification number: G02B6/105 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/10 ,  C03C2201/28

    Abstract: PURPOSE:To enable easy production of an optical fiber having excellent resistance to radiation by both a VAD method and an internal CVD method by specifying the components of the core, clad and inside jacket thereof respectively at specific values. CONSTITUTION:A core 31 is made of high purity SiO2, a clad 32 is made into the constitution consisting essentially of SiO2 and contg. P2O5, B2O3 and fluorine, an inside jacket 32 is made into the constitution consisting essentially of SiO2 and contg. P2O5 and B2O3, and an outside jacket 34 is made into the constitution consisting essentially of SiO2. The content of the fluorine to be incorporated into the clad 32 is made about 2-5mol%, and the total content of the B2O3 and P2O5 to be incorporated into the jacket 33 is made about 10-15mol%. The ratio of B2O3 with respect to P2O5 is made in a 1-2 times range. The fiber having excellent resistance to radiation is thus easily manufactured by both a VAD method and an internal CVD method.

    Abstract translation: 目的：通过分别以具体值指定芯，包层和内套的组分，通过VAD法和内部CVD法容易地制造出具有优异的耐辐射性的光纤。 构成：芯31由高纯度SiO 2制成，包层32被制成基本上由SiO2组成的结构。 P2O5，B2O3和氟，将内套32制成基本上由SiO 2组成的结构。 P2O5和B2O3，并且外部护套34制成基本上由SiO 2组成的构造。 掺入包层32中的氟的含量为约2-5mol％，并且将要加入到夹套33中的B 2 O 3和P 2 O 5的总含量为约10-15mol％。 B 2 O 3相对于P 2 O 5的比例为1-2倍。 因此，通过VAD法和内部CVD法容易地制造出具有优异的耐辐射性的纤维。

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