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1. 发明申请

US20030152347A1 Optical fiber and optical transmission path 失效
标题翻译：光纤和光传输路径
公开(公告)号：US20030152347A1
公开(公告)日：2003-08-14
申请号：US10346867
申请日：2003-01-17
申请人： Fujikura Ltd.
发明人： Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
IPC分类号： G02B006/22
CPC分类号： G02B6/02242 , G02B6/02009 , G02B6/02271 , G02B6/02285 , G02B6/03666 , G02B6/03688 , G02B6/29377 , H04B10/2525
摘要： An optical fiber having a chromatic dispersion of null1.0 ps/nm/km or more in a 1460 nm wavelength band, a dispersion slope of 0.04 ps/nm2/km or more in a 1550 nm wavelength band, and a cutoff wavelength of 1450 nm or less, comprises a relation of an RDS, which is a value of the dispersion slope to the chromatic dispersion, to a wavelength null is null1.67null10null5nullnull0.0300nullRDS(null)nullnull1.67null10null5nullnull0.0285.
摘要翻译：在1460nm波长带中具有+1.0ps / nm / km以上的色散的色散，1550nm波长带中的色散斜率为0.04ps / nm2 / km以上，截止波长为1450nm 或更少，包括作为色散斜率与色散的值的RDS与波长长度的关系为-1.67×10-5lambd + 0.0300> = RDS（lambd）> = - 1.67×10-5lambd + 0.0285 。

2. 发明申请

US20040065120A1 Multi-tube burner and glass preform manufacturing method using the same 有权
标题翻译：多管燃烧器和玻璃预制棒的制造方法采用相同的方法
公开(公告)号：US20040065120A1
公开(公告)日：2004-04-08
申请号：US10610922
申请日：2003-07-02
申请人： FUJIKURA LTD.
发明人： Keisuke Uchiyama , Masahiro Horikoshi , Koichi Harada
IPC分类号： C03B037/018
CPC分类号： C03B37/0142 , C03B2207/06 , C03B2207/08 , C03B2207/18 , C03B2207/42 , Y02P40/57
摘要： A multi-tube burner is provided which includes a cylindrical outermost nozzle and at least one cylindrical inner nozzle provided coaxially with the outermost nozzle to form annular jet openings for gases used to manufacture a glass preform. The angle between a center axis of an outer circumference of the outermost nozzle and a distal end portion of each of the inner nozzles is 90nullnull not more than 3null. Furthermore, the distance between the center axis of the outer circumference of the outermost nozzle and each of center axes of inner circumferences and outer circumferences of the inner nozzles is not more than 0.20 mm.
摘要翻译：提供一种多管燃烧器，其包括圆柱形最外面的喷嘴和与最外面的喷嘴同轴设置的至少一个圆柱形内部喷嘴，以形成用于制造玻璃预型件的气体的环形喷射开口。最外侧喷嘴的外周的中心轴与各内部喷嘴的前端部之间的角度为90°±3°以下。此外，最外侧喷嘴的外周的中心轴线与内侧喷嘴的内周和外周的中心轴之间的距离不大于0.20mm。

3. 发明申请

US20030215201A1 Optical fiber and optical transmission path 审中-公开
标题翻译：光纤和光传输路径
公开(公告)号：US20030215201A1
公开(公告)日：2003-11-20
申请号：US10437052
申请日：2003-05-14
申请人： FUJIKURA LTD.
发明人： Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
IPC分类号： G02B006/16 , G02B006/22
CPC分类号： G02B6/03694 , G02B6/02247 , G02B6/02285 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/03666 , G02B6/29377
摘要： Under condition that a non-circularity ratio is 5% or lower and a thermal expansion coefficient of a glass which forms the core is null1 and a thermal expansion of a glass which forms the cladding is null2, the difference of coefficients is controlled such that a formula null2.5null10null7/null C.nullnull1nullnull2null1.0null10null7/null C. is satisfied so as to maintain a polarization mode dispersion to be 0.03 ps/km0.5 or lower. The difference of coefficients is further controlled such that a formula null1.5null10null7/null C.nullnull1nullnull2null0/null C. is satisfied so as to maintain a polarization mode dispersion to be 0.015 ps/km0.5 or lower. By doing this, birefringence is reduced by adjusting the thermal expansion coefficient in a core and a cladding; thus providing an optical fiber, and an optical transmission path using the optical fiber, having preferable PMD for high speed transmission.
摘要翻译：在非圆度比为5％以下，形成芯的玻璃的热膨胀系数为α1，形成包层的玻璃的热膨胀为α2的条件下，控制系数差，使得满足公式-2.5×10 -7 /℃。<=α1-α2<= 1.0×10 -7 /℃，以便将偏振模色散维持在0.03ps / km <0.5>或更低。进一步控制系数的差异，使得满足公式-1.5×10 -7 /℃<=α1-α2<= 0 /℃，以便将偏振模色散维持为0.015ps / km <0.5>以下。通过这样做，通过调节芯和包层中的热膨胀系数来减少双折射; 从而提供一种光纤，以及使用该光纤的光传输路径，具有优选用于高速传输的PMD。

4. 发明申请

US20030215202A1 Optical fiber and optical transmission path 有权
公开(公告)号：US20030215202A1
公开(公告)日：2003-11-20
申请号：US10440263
申请日：2003-05-19
申请人： FUJIKURA LTD.
发明人： Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
IPC分类号： G02B006/22
CPC分类号： G02B6/03694 , G02B6/02247 , G02B6/02285 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/03666 , G02B6/29377
摘要： Under condition that a non-circularity ratio is 5% or lower and a thermal expansion coefficient of a glass which forms the core is null1 and a thermal expansion of a glass which forms the cladding is null2, the difference of coefficients is controlled such that a formula null2.5null10null7/null C.nullnull1nullnull2null1.0null10null7/null C. is satisfied so as to maintain a polarization mode dispersion to be 0.03 ps/km0.5 or lower. The difference of coefficients is further controlled such that a formula null1.5null10null7/null C.nullnull1nullnull2null0/null C. is satisfied so as to maintain a polarization mode dispersion to be 0.015 ps/km0.5 or lower. By doing this, birefringence is reduced by adjusting the thermal expansion coefficient in a core and a cladding; thus providing an optical fiber, and an optical transmission path using the optical fiber, having preferable PMD for high speed transmission.

5. 发明申请

US20030136340A1 Optical fiber drawing die and drawing method therefor 有权
标题翻译：光纤拉丝模及其拉丝方法
公开(公告)号：US20030136340A1
公开(公告)日：2003-07-24
申请号：US10313402
申请日：2002-12-06
申请人： Fujikura Ltd.
发明人： Munehisa Fujimaki , Takahiro Hamada , Koichi Harada
IPC分类号： B29D011/00
CPC分类号： B29D11/00663 , B29L2011/0075
摘要： An optical fiber coating die is made such that an interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a pressure value of resin inside a coating cup, and the interfacial shear rate is in a range of null1.5null105 to 0 secnull1. Also, an optical fiber drawing die is made such that the interfacial shear rate of the optical fiber to the resin coat is calculated in accordance with a diameter of a coating resin, and the interfacial shear rate is in a range of range of null3null105 to 2null105 secnull1. By doing this, an optical fiber drawing die which can be used in an optical fiber drawing method so as to realize stable resin coating operation even in high-speed drawing operation and high productivity can be realized.
摘要翻译：制造光纤涂层模具，使得光纤与树脂涂层的界面剪切速率根据涂覆杯内的树脂的压力值计算，并且界面剪切速率在-1.5×10 5〜 0秒-1。此外，制造光纤拉伸模具，使得光纤与树脂涂层的界面剪切速率根据涂布树脂的直径计算，并且界面剪切速率在-3×10 5〜 2x105秒-1。通过这样做，可以实现即使在高速拉丝操作和高生产率下也能够用于光纤拉伸方法以实现稳定的树脂涂布操作的光纤拉伸模。

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