Polarised plane-maintaining optical fiber
    201.
    发明公开
    Polarised plane-maintaining optical fiber 失效
    Optische Faser mit Erhaltung der Polarisationsebene。

    公开(公告)号:EP0109604A1

    公开(公告)日:1984-05-30

    申请号:EP83111109.1

    申请日:1981-01-09

    Applicant: HITACHI, LTD.

    Abstract: An optical fiber has the following cross-sectional structure:

    - a circular core 20,
    - a circular cladding 21 surrounding the core 20,
    - a first jacket 22 surrounding the cladding 21 and having an elliptical outer shape, and
    - a second jacket 23 surrounding the first jacket 22 and having a circular outer shape.

    The core 20 and the circular cladding 21, which has a lower refractive index than the core 20, together form the optical waveguide proper. Such an optical fiber enables maintaining the polarisation plane at low loss.

    Abstract translation: 光纤具有以下横截面结构: - 圆形芯20,围绕芯20的圆形包层21,围绕包层21并具有椭圆形外形的第一护套22和围绕 第一护套22并且具有圆形外形。 具有比芯20更低的折射率的芯20和圆形包层21一起形成光波导。 这样的光纤使得能够将偏振面保持在低损耗。

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