公开(公告)号：US06731847B1

公开(公告)日：2004-05-04

申请号：US09556776

申请日：2000-04-25

申请人： Takatoshi Kato ,  Kazuhiro Okamoto ,  Mitsuomi Hada ,  Shinjiro Hagihara ,  Morio Watanabe ,  Kohei Kobayashi

发明人： Takatoshi Kato ,  Kazuhiro Okamoto ,  Mitsuomi Hada ,  Shinjiro Hagihara ,  Morio Watanabe ,  Kohei Kobayashi

IPC分类号： G02B602

CPC分类号： G02B6/02014 ,  G02B6/02266 ,  G02B6/0283 ,  G02B6/03611 ,  G02B6/03627

摘要： The present invention relates to an optical fiber having a large positive dispersion in a wavelength band of 1.55 &mgr;m in order to compensate for a negative dispersion inherent in an NZ-DSF in the wavelength band of 1.55 &mgr;m. This optical fiber comprises a depressed cladding structure constituted by a core region; an inner cladding, provided on the outer periphery of the core region, having a lower refractive index; and an outer cladding having a higher refractive index. In this optical fiber, the relative refractive index difference of the core region with respect to the outer cladding is 0.30% or more but 0.50% or less, and the relative refractive index difference of the inner cladding with respect to the outer cladding is −0.50% or more but −0.02% or less. Also, the optical fiber has a dispersion greater than 18 ps/nm/km at a wavelength of 1.55 &mgr;m, and an effective area of 70 &mgr;m2 or more at the wavelength of 1.55 &mgr;m.

摘要翻译： 本发明涉及一种在1.55μm波长带上具有大的正色散的光纤，以补偿NZ-DSF在1.55μm波长带内固有的负色散。 该光纤包括由芯区域构成的凹陷包层结构; 设置在芯区域的外周上的具有较低折射率的内包层; 以及具有较高折射率的外包层。 在该光纤中，芯区域相对于外包层的相对折射率差为0.30％以上且0.50％以下，内包层相对于外包层的相对折射率差为-0.50 ％以上但为-0.02％以下。 此外，光纤的波长为1.55μm时的色散大于18ps / nm / km，波长1.55μm的有效面积为70m 2以上。

公开(公告)号：US06614976B2

公开(公告)日：2003-09-02

申请号：US10036372

申请日：2002-01-07

申请人： Takatoshi Kato ,  Kazuhiro Okamoto ,  Mitsuomi Hada ,  Shinjiro Hagihara ,  Morio Watanabe ,  Kohei Kobayashi

发明人： Takatoshi Kato ,  Kazuhiro Okamoto ,  Mitsuomi Hada ,  Shinjiro Hagihara ,  Morio Watanabe ,  Kohei Kobayashi

IPC分类号： G02B618

CPC分类号： G02B6/02014 ,  G02B6/02266 ,  G02B6/0283 ,  G02B6/03611 ,  G02B6/03627

摘要： The present invention relates to an optical fiber having a large positive dispersion in a wavelength band of 1.55 &mgr;m in order to compensate for a negative dispersion inherent in an NZ-DSF in the wavelength band of 1.55 &mgr;m. This optical fiber comprises a depressed cladding structure constituted by a core region; an inner cladding, disposed at the outer periphery of the core region, having a lower refractive index; and an outer cladding having a higher refractive index. In this optical fiber, the relative refractive index difference of the core region with respect to the outer cladding is at least 0.30% but not greater than 0.50%, and the relative refractive index difference of the inner cladding with respect to the outer cladding is at least −0.50% but not greater than −0.02%. Also, the optical fiber has a dispersion greater than 18 ps/nm/km at a wavelength of 1.55 &mgr;m, and an effective cross-sectional area Aeff of at least 70 &mgr;m2 at the wavelength of 1.55 &mgr;m.

摘要翻译： 本发明涉及一种在1.55μm波长带中具有大的正色散的光纤，以便补偿N​​Z-DSF在1.55μm波长带内固有的负色散。 该光纤包括由芯区域构成的凹陷包层结构; 设置在芯区域的外周的具有较低折射率的内包层; 以及具有较高折射率的外包层。 在该光纤中，芯区域相对于外包层的相对折射率差为0.30％以上且0.50％以下，内包层相对于外包层的相对折射率差为 至少-0.50％但不大于-0.02％。 此外，光纤的波长为1.55μm时的色散大于18ps / nm / km，波长1.55μm的有效截面积Aeff为70mum2以上。

公开(公告)号：US06337942B1

公开(公告)日：2002-01-08

申请号：US09441550

申请日：1999-11-17

申请人： Takatoshi Kato ,  Kazuhiro Okamoto ,  Mitsuomi Hada ,  Shinjiro Hagihara ,  Morio Watanabe ,  Kohei Kobayashi

发明人： Takatoshi Kato ,  Kazuhiro Okamoto ,  Mitsuomi Hada ,  Shinjiro Hagihara ,  Morio Watanabe ,  Kohei Kobayashi

IPC分类号： G02B622

CPC分类号： G02B6/02014 ,  G02B6/02266 ,  G02B6/03611 ,  G02B6/03627

摘要： The present invention relates to an optical fiber having a large positive dispersion in a wavelength band of 1.55 &mgr;m in order to compensate for a negative dispersion inherent in an NZ-DSF in the wavelength band of 1.55 &mgr;m. This optical fiber comprises a depressed cladding structure constituted by a core region; an inner cladding, disposed at the outer periphery of the core region, having a lower refractive index; and an outer cladding having a higher refractive index. In this optical fiber, the relative refractive index difference of the core region with respect to the outer cladding is at least 0.30% but not greater than 0.50%, and the relative refractive index difference of the inner cladding with respect to the outer cladding is at least −0.50% but not greater than −0.02%. Also, the optical fiber has a dispersion greater than 18 ps/nm/km at a wavelength of 1.55 &mgr;m, and an effective cross-sectional area Aeff of at least 70 &mgr;m2 at the wavelength of 1.55 &mgr;m.

公开(公告)号：US20080166088A1

公开(公告)日：2008-07-10

申请号：US12007054

申请日：2008-01-04

申请人： Shinjiro Hagihara

发明人： Shinjiro Hagihara

IPC分类号： G02B6/26

CPC分类号： G02B6/29377

摘要： A dispersion compensating fiber module having a dispersion compensating function has a fiber arranging portion including a plurality of fiber housing portions (housing) which are concentrically disposed and accommodate a dispersion compensating fiber, and a fiber connecting portion connecting the dispersion compensating fibers accommodated in three fiber housing portions.

摘要翻译： 具有色散补偿功能的色散补偿光纤模块具有光纤布置部分，该光纤布置部分包括同心设置并容纳色散补偿光纤的多个光纤容纳部分（壳体），以及光纤连接部分，其连接三个光纤中的色散补偿光纤 住房部分。