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    OPTICAL FIBER MODULE
    5.
    发明公开
    OPTICAL FIBER MODULE 审中-公开
    GLASFASERMODUL

    公开(公告)号：EP2631688A1

    公开(公告)日：2013-08-28

    申请号：EP11843027.1

    申请日：2011-09-13

    申请人： Furukawa Electric Co., Ltd.

    发明人： TAKAHASHI, Masanori ,  GONDA, Tomohiro ,  SUGIZAKI, Ryuichi

    IPC分类号： G02B6/024 ,  G02B6/00 ,  G02F1/365

    CPC分类号： G02B6/024 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/02395 ,  G02B6/03627

    摘要： An optical fiber module includes a polarization-maintaining highly-nonlinear optical fiber and a housing. The polarization-maintaining highly-nonlinear optical fiber includes a core, a cladding surrounding the core and having two stress applying portions formed to sandwich the core and extend along the core, and a coating covering the cladding. The housing houses the polarization-maintaining highly-nonlinear optical fiber which is wound in a ring coil shape. The polarization-maintaining highly-nonlinear optical fiber has a bending loss of 0.01 dB/turn or less at a wavelength of 1550 nm when bent to form a diameter of 20 mm, a nonlinear coefficient γ of 10 W -1 km - 1 or larger at the wavelength of 1550 nm, a cutoff wavelength λc of 1530 nm or shorter, and a zero-dispersion wavelength of not shorter than 1400 nm and not longer than 1650 nm.

    摘要翻译： 光纤模块包括偏振保持高非线性光纤和壳体。 偏振保持高非线性光纤包括芯，围绕芯的包层，并且具有形成为夹着芯并且沿着芯延伸的两个应力施加部以及覆盖包层的涂层。 壳体容纳以环形线圈形状缠绕的偏振保持高非线性光纤。 偏振保持高非线性光纤弯曲成直径为20mm时的波长为1550nm时的弯曲损耗为0.01dB /匝，非线性系数³为10W -1 km -1以上 在1550nm的波长下，截止波长λc为1530nm以下，零色散波长不低于1400nm且不大于1650nm。

    HOLEY FIBER
    6.
    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
    7.
    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。