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    • 8. 发明申请
    • HOLE ARRANGED PHOTONIC CRYSTAL FIBER FOR LOW LOSS, TIGHT FIBER BENDING APPLICATIONS
    • 孔排列的光子晶体纤维用于低损耗,紧密的光纤弯曲应用
    • WO2009004338A2
    • 2009-01-08
    • PCT/GB2008/002279
    • 2008-07-02
    • TYCO ELECTRONICS RAYCHEM NVTYCO ELECTRONICS UK LTDWATTE, JanVAN ERPS, JürgenNASILOWSKI, TomaszDEBAES, ChristofTHIENPONT, Hugo
    • WATTE, JanVAN ERPS, JürgenNASILOWSKI, TomaszDEBAES, ChristofTHIENPONT, Hugo
    • G02B6/02366G02B6/024G02B6/24
    • A microstructured fiber or photonic crystal fiber is described having a doped solid core region and a cladding region, holes being provided in the cladding region, the fiber having a low hybrid splice loss to conventional fiber as well as being able to be tightly bent due to the microstructured cladding. The cladding region can contain a plurality of holes surrounding and distanced from the core. These holes are preferably located symmetrically around the core and extend longitudinally along the length of fiber. The holes may be two or more D-shaped holes or truncated D-shaped holes arranged symmetrically around the care. In other embodiments, the holes comprise hole structures arranged symmetrically around the core in a ring. The holes may be arranged having the inner side facing the core formed from arcs of a circle, e.g. equal arcs of a circle. Between the arcs circular holes may be provided called capillaries, i.e. smaller holes. According to the present invention, any number of holes may surround the core, preferably three or more. The fiber has low loss at small bending radii.
    • 描述了微结构光纤或光子晶体光纤,其具有掺杂的实芯区域和包层区域,在包层区域中设置有孔洞,该光纤对常规光纤具有低混合接头损耗以及 由于微结构包层能够紧密弯曲。 包层区域可以包含多个围绕核心并与其远离的孔。 这些孔优选围绕芯体对称地定位并且沿着纤维的长度纵向延伸。 这些孔可以是围绕护理对称布置的两个或更多个D形孔或截头D形孔。 在其他实施例中,孔包括环形地围绕核心对称布置的孔结构。 孔可以布置成具有面向由圆弧形成的芯的内侧,例如, 圆等圆。 在圆弧之间可以提供称为毛细管的圆形孔,即较小的孔。 根据本发明,任何数量的孔可以包围核心,优选三个或更多。 光纤在小弯曲半径下损耗低。