公开(公告)号：US08464557B2

公开(公告)日：2013-06-18

申请号：US13279850

申请日：2011-10-24

申请人： Taeko Shibuta ,  Tadashi Takahashi ,  Takeshi Yagi

发明人： Taeko Shibuta ,  Tadashi Takahashi ,  Takeshi Yagi

IPC分类号： C03B37/012

CPC分类号： C03B37/01231 ,  C03B37/01205 ,  C03B37/01446 ,  C03B37/027 ,  C03B37/02763 ,  C03B2203/14 ,  C03B2205/10

摘要： A method of producing an optical fiber preform includes preparing a glass preform that has a hole extending in a longitudinal direction formed on one end of the glass preform in such a manner that a length of the hole is equal to or less than half of an entire length of the glass preform, synthesizing a porous glass preform by depositing glass particles on an outer circumference of the glass preform having the hole formed on the end, and sintering the porous glass preform after arranging the porous glass preform in such a manner that the end having the hole formed thereon points downward and the hole is open to the air.

摘要翻译： 一种制造光纤预制棒的方法包括制备玻璃预制棒，该玻璃预制棒具有沿玻璃预成型件的一端形成的纵向方向延伸的孔，孔的长度等于或小于整个孔的一半 玻璃预成型件的长度，通过在玻璃预成型体的外周上沉积玻璃颗粒合成多孔玻璃预制件，所述玻璃预成型体的端部形成有孔，并且在将多孔玻璃预制件布置成使得端部 其上形成有孔向下指向孔并且空气开放。

公开(公告)号：US20120118019A1

公开(公告)日：2012-05-17

申请号：US13293605

申请日：2011-11-10

申请人： Tadashi TAKAHASHI ,  Taeko Shibuta ,  Takeshi Yagi

发明人： Tadashi TAKAHASHI ,  Taeko Shibuta ,  Takeshi Yagi

IPC分类号： C03B37/027 ,  C03B37/018

CPC分类号： C03B37/01446 ,  C03B37/01231 ,  C03B2203/14 ,  C03C17/006 ,  C03C23/0085 ,  C03C2217/425

摘要： A method of producing an optical fiber that has a hole extending in a longitudinal direction includes preparing a glass preform that has a hole extending in a longitudinal direction, synthesizing a porous preform layer by depositing silica-based glass particles on an outer circumference of the glass preform, dehydrating the porous preform layer, sintering the dehydrated porous preform layer under a reduced pressure so that the porous preform layer becomes a translucent glass preform layer that contains closed pores, and drawing a translucent glass preform that includes the glass preform and the translucent glass preform layer so that the translucent glass preform layer becomes a transparent glass layer.

摘要翻译： 制造具有沿纵向延伸的孔的光纤的方法包括制备具有沿纵向延伸的孔的玻璃预制棒，通过在玻璃的外周上沉积二氧化硅基玻璃颗粒来合成多孔预成型体层 预成型件，使多孔预成型层脱水，在减压下烧结脱水多孔预成型体层，使得多孔预成型体层成为含有闭孔的半透明玻璃预成型体层，并且拉制包含玻璃预成型体和半透明玻璃的半透明玻璃预成型体 预成型体层，使得半透明玻璃预成型体层成为透明玻璃层。

公开(公告)号：US06901196B2

公开(公告)日：2005-05-31

申请号：US10870916

申请日：2004-06-21

申请人： Fumio Takahashi ,  Hideya Moridaira ,  Taeko Shibuta

发明人： Fumio Takahashi ,  Hideya Moridaira ,  Taeko Shibuta

IPC分类号： C03B37/018 ,  C03C13/04 ,  C03C25/60 ,  G02B6/02 ,  G02B6/036 ,  G02B6/44 ,  G02B6/18

CPC分类号： G02B6/03633 ,  C03C13/047 ,  C03C25/607 ,  G02B6/02014 ,  G02B6/02223 ,  G02B6/02266 ,  G02B6/02395 ,  G02B6/03627 ,  G02B6/4409

摘要： An optical fiber includes a first core having a relative refractive index difference of larger than 0.36%, and a cladding. The optical fiber has fiber cut-off wavelength λc of more than 1350 nm, cable cut-off wavelength λcc of less than 1285 nm, bending loss at a wavelength of 1625 nm of not more than 10 dB/km when wound at a diameter of 20 mm, transmission loss at a wavelength range of 1285 to 1625 nm of not more than 0.40 dB/km, transmission loss at a wavelength of 1383 nm less than transmission loss at a wavelength of 1310 nm, and difference in transmission loss at a wavelength of 1383 nm of not more than 0.04 dB/km before and after exposure to hydrogen. The lower bending loss of the optical fiber provides an optical fiber cable for use in a WDM transmission in wavelength range of 1285 to 1625 nm.

摘要翻译： 光纤包括相对折射率差大于0.36％的第一芯和包层。 该光纤具有大于1350nm的光纤截止波长lambdac，小于1285nm的电缆截止波长lambdacc，在1625nm波长处的弯曲损耗在不大于10dB / km时，在直径为 在1285〜1625nm的波长范围内的传输损耗为0.40dB / km以下，波长1383nm下的传输损耗小于1310nm波长的传输损耗，波长的传输损耗差 在暴露于氢气之前和之后的1383nm不大于0.04dB / km。 光纤的较低弯曲损耗提供了用于波长1285至1625nm波长范围的WDM传输的光缆。

公开(公告)号：US06795628B2

公开(公告)日：2004-09-21

申请号：US10295873

申请日：2002-11-18

申请人： Taeko Shibuta

发明人： Taeko Shibuta

IPC分类号： G02B616

CPC分类号： G02B6/02009 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/02271 ,  G02B6/03627 ,  H04B10/2916 ,  H04B2210/003

摘要： Provided is an optical fiber that is in particular suitable for Raman amplification. An effective area at a wavelength of 1570 nm is in a range of 35 &mgr;m2 to 45 &mgr;m2, an absolute value of a dispersion slope at the wavelength is equal to or less than 0.04 ps/nm2/km, and a dispersion value at the wavelength is in a range of 5 ps/nm/km to 10 ps/nm/km. It is desirable that a refractive index profile contains at least one annular region between a center core and a cladding region.