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    • 5. 发明授权
    • 홀 어시스트형 다공성 광섬유 및 저굽힘 손실 멀티 모드다공성 광섬유
    • 홀어시스트형다공성광섬유및저굽힘손실멀티모드다공성광섬유
    • KR100933572B1
    • 2009-12-23
    • KR1020077001791
    • 2005-07-12
    • 가부시키가이샤후지쿠라
    • 관닝다케나가가츠히로이조가츠아키아이카와가즈히코히메노구니하루
    • G02B6/032G02B6/036
    • G02B6/02333G02B6/02338G02B6/02357G02B6/03633G02B6/14
    • A high-performance HAHF that achieves both low bending loss L B and a short cut-off wavelength » C is obtained. The fiber is a hole-assisted holey fiber including a core region; a cladding region around the core region, the core region having a higher refractive index than that of the cladding region; and a plurality of holes that are provided in the cladding region around the core region, wherein the holes form two layers comprising an inner hole layer and an outer hole layer, the inner hole layer has the same number of holes as the number of the holes in the outer hole layer, the outer holes are provided in locations in which holes are absent when viewed from the center of the core region, holes in each layer forming a respective form layer have the same diameter, a distance › 1 from a center of the core region to a center of an inner hole and a distance › 2 from the center of the core region to a center of an outer hole satisfy › 1 ,
    • 高性能的HAHF,可实现低弯曲损耗L B和短截止波长» C被获得。 该纤维是包括核心区域的空穴辅助多孔光纤; 围绕所述芯区域的包层区域,所述芯区域具有比所述包层区域的折射率高的折射率; 以及多个孔,所述多个孔设置在所述芯区域周围的所述包覆区域中,其中所述孔形成包括内孔层和外孔层的两层,所述内孔层具有与所述孔的数量相同的孔数 在外部孔层中,当从芯部区域的中心观察时,外部孔设置在没有孔的位置处,形成相应形成层的每个层中的孔具有相同的直径,距离中心的距离> 1 核心区域到内孔的中心并且从核心区域的中心到外孔的中心的距离> 2的距离满足> 1,< > 2,并且内孔的直径d 1和外孔的直径d 2满足d 1‰d 2。