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    HOLEY FIBER
    2.
    发明公开
    HOLEY FIBER 审中-公开
    多孔光纤

    公开(公告)号：EP2378321A1

    公开(公告)日：2011-10-19

    申请号：EP09801905.2

    申请日：2009-07-10

    申请人： The Furukawa Electric Co., Ltd.

    发明人： TAKAHASHI, Masanori ,  IMAMURA, Katsunori ,  MUKASA, Kazunori ,  YAGI, Takeshi

    IPC分类号： G02B6/00 ,  G02B6/032

    CPC分类号： G02B6/02366 ,  G02B6/02009

    摘要： A core portion; and a cladding portion positioned around a periphery of the core portion and having holes arranged circularly around the core portion are included. Twelve to thirty-six of the holes are arranged circularly at a radius of 36 to 48 micrometers around an approximate center of the core portion, a hole diameter is in a range of 2.0 to 11.0 micrometers, and at a wavelength of 1064 nanometers, a single-mode operation is substantially performed and an effective core area is equal to or greater than 1500 µm 2 . Accordingly, a holey fiber is provided, which is capable of propagating light in a form preferable for practical uses while achieving a substantial single-mode operation and low nonlinearity.

    NONLINEAR OPTICAL FIBER, NONLINEAR OPTICAL DEVICE, AND OPTICAL SIGNAL PROCESSOR
    3.
    发明公开
    NONLINEAR OPTICAL FIBER, NONLINEAR OPTICAL DEVICE, AND OPTICAL SIGNAL PROCESSOR 有权
    NICHTLINEARE OPTISCHE FASER，NICHTLINEARE OPTISCHE EINRICHTUNG UND OPTISCHER SIGNALPROZESSOR

    公开(公告)号：EP1988411A1

    公开(公告)日：2008-11-05

    申请号：EP07714601.7

    申请日：2007-02-20

    申请人： The Furukawa Electric Co., Ltd.

    发明人： TANIGUCHI, Yuki ,  HIROISHI, Jiro ,  TAKAHASHI, Masanori ,  SUGIZAKI, Ryuichi

    IPC分类号： G02B6/036 ,  G02B6/024 ,  G02F1/365

    CPC分类号： G02B6/03688 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/02257 ,  G02B6/02271 ,  G02B6/0281 ,  G02B6/0286 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/0365 ,  G02B6/03672 ,  G02F1/365

    摘要： A nonlinear optical fiber includes a core including a center core region, a core layer that is formed around the center core region and that has a refractive index lower than a refractive index of the center core layer, and at least one buffer core layer that is formed between the center core region and the core layer and that has a refractive index lower than the refractive index of the center core region and higher than the refractive index of the core layer; and a cladding that is formed around the core layer and that has a refractive index lower than the refractive index of the center core region and higher than the refractive index of the core layer. An effective core area at a wavelength of 1550 nm is equal to or smaller than 18 µm 2 . With this configuration, there is provided a nonlinear optical fiber having stable wavelength dispersion characteristics in the longitudinal direction even with a high optical nonlinearity so that a nonlinear optical phenomenon can be used with high efficiency, a nonlinear optical device employing the nonlinear optical fiber, and an optical signal processing apparatus employing the nonlinear optical fiber.

    摘要翻译： 非线性光纤包括：芯，其包括中心芯区域，形成在中心芯区域周围并具有低于中心芯层的折射率的折射率的芯层，以及至少一个缓冲芯层层 形成在中心芯区域和芯层之间，并且折射率低于中心纤芯区域的折射率并高于芯层的折射率; 以及形成在芯层周围并且折射率低于中心芯区域的折射率并高于芯层的折射率的包层。 1550nm波长的有效核心面积等于或小于18μm2。 利用这种结构，即使具有高的光学非线性，也提供了在纵向上具有稳定的波长色散特性的非线性光纤，从而可以高效率地使用非线性光学现象，使用非线性光纤的非线性光学器件，以及 采用非线性光纤的光信号处理装置。