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21. 发明授权

US07364483B2 Marine reversing gear assembly 有权
公开(公告)号：US07364483B2
公开(公告)日：2008-04-29
申请号：US11242028
申请日：2005-10-04
申请人： Kazuyoshi Harada , Yoshiaki Terasawa , Naoyuki Oga , Hideo Misao
发明人： Kazuyoshi Harada , Yoshiaki Terasawa , Naoyuki Oga , Hideo Misao
IPC分类号： B60L11/00
CPC分类号： B63H23/30 , B63H20/20 , B63H23/08
摘要： The present invention provides a marine reversing gear assembly, wherein a manual directional control valve 7a and an electromagnetic directional control valve 7b for a forward/reverse directional control valve 7 for hydraulic oil supply circuit 10 have a common structure of an oil line joint surface for the hydraulic oil supply circuit 10 for friction discs of a forward clutch 2f and a reverse clutch 2a, and the forward/reverse directional control valve 7 for the hydraulic oil supply circuit 10 can be changed to either the manual directional control valve 7a or the electromagnetic directional control valve 7b by exchanging spools 7c or 7e of the manual directional control valve 7a or the electromagnetic directional control valve 7b. Therefore, the operational manner of the forward/reverse directional control valve for the hydraulic oil supply line of a marine reversing gear assembly can be changed quite easily between the manual directional control valve and the electromagnetic directional control valve.

22. 发明授权

US06840682B2 Connection unit, optical fiber line unit, optical cable, and optical transmission system 失效
标题翻译：连接单元，光纤线路单元，光缆和光传输系统
公开(公告)号：US06840682B2
公开(公告)日：2005-01-11
申请号：US10365475
申请日：2003-02-13
申请人： Yoshiaki Terasawa , Toshio Oshima
发明人： Yoshiaki Terasawa , Toshio Oshima
IPC分类号： G02B6/255 , G02B6/26 , G02B6/38
CPC分类号： G02B6/2551 , G02B6/266
摘要： It is an object of this invention to provide a connection unit capable of improving transmission characteristics. The connection unit according to this invention is provided between a plurality of first optical fibers extending from an optical amplifier and a plurality of second optical fibers in an optical cable, and comprises one or more optical components to connect one first optical fiber to one second optical fiber. Each of the optical components includes third and fourth optical fibers that can be connected to one first optical fiber and one second optical fiber with low connection losses, respectively, and a loss adjusting section for adjusting a transmission loss. The transmission loss deviation in a plurality of optical transmission lines is adjusted to 0.005 dB/km or less.
摘要翻译：本发明的目的是提供一种能够改善传输特性的连接单元。根据本发明的连接单元设置在从光放大器和光缆中的多个第二光纤延伸的多个第一光纤之间，并且包括一个或多个光学部件，以将一个第一光纤连接到一个第二光学纤维。每个光学部件包括分别连接到一个第一光纤和一个具有低连接损耗的第二光纤的第三和第四光纤，以及用于调整传输损耗的损耗调整部分。将多个光传输线路的传输损耗偏差调整为0.005dB / km以下。

23. 发明授权

US5913005A Single-mode optical fiber 失效
标题翻译：单模光纤
公开(公告)号：US5913005A
公开(公告)日：1999-06-15
申请号：US15505
申请日：1998-01-29
申请人： Yoshiaki Terasawa , Takatoshi Kato , Fumiyoshi Ohkubo , Yosuke Yamazaki
发明人： Yoshiaki Terasawa , Takatoshi Kato , Fumiyoshi Ohkubo , Yosuke Yamazaki
IPC分类号： G02B6/028 , G02B6/036 , G02B6/18
CPC分类号： G02B6/02009 , G02B6/02238 , G02B6/0286 , G02B6/03633
摘要： The present invention relates to an S-mode optical fiber having a structure which can effectively restrain dispersion slope from increasing. In this S-mode optical fiber, an optical core is constituted by inner and outer cores, while an optical cladding is constituted by an inner cladding in which "tailing" occurs and an outer cladding. In a cross section of the S-mode optical fiber perpendicular to its signal light propagating direction, when surface integral values of relative refractive index difference with respect to a reference region having an average refractive index n.sub.0 are S1 and S2 in the optical cladding and optical core, respectively, the S-mode optical fiber is designed to satisfy a relationship of 0
摘要翻译：本发明涉及具有能够有效地抑制色散斜率增加的结构的S模式光纤。在该S模式光纤中，光纤芯由内芯和外芯构成，而光学包层由发生“拖尾”的内包层和外包层构成。在垂直于其信号光传播方向的S模式光纤的横截面中，当相对于平均折射率n0的参考区域的相对折射率差的表面积分值在光学包层和光学器件中为S1和S2时核心，S模式光纤被设计为满足0

24. 发明授权

US5822488A Single-mode optical fiber with plural core portions 失效
标题翻译：具有多芯部分的单模光纤
公开(公告)号：US5822488A
公开(公告)日：1998-10-13
申请号：US725903
申请日：1996-10-04
申请人： Yoshiaki Terasawa , Yuji Takahashi , Takatoshi Kato
发明人： Yoshiaki Terasawa , Yuji Takahashi , Takatoshi Kato
IPC分类号： C03B37/012 , C03B37/014 , C03B37/027 , G02B6/036 , G02B6/02
CPC分类号： G02B6/0365 , C03B37/01211 , C03B37/01413 , C03B37/027 , G02B6/02238 , G02B6/0228 , G02B6/03611 , G02B6/03633 , G02B6/03644 , C03B2203/22 , C03B2203/29 , G02B6/02004 , G02B6/02009
摘要： The present invention relates to a single-mode optical fiber having a configuration which enables lowering of dispersion slope while securing a sufficient MFD. This single-mode optical fiber has a refractive index profile in which an indent with a sufficient width is provided at the center of its core region. In particular, this indent satisfies the following relationship: a.multidot.(.DELTA.n.sub.2 -.DELTA.n.sub.1)/(b.multidot..DELTA.n.sub.2).gtoreq.0.04 when the first core portion in the single-mode optical fiber has a mean relative refractive index difference of .DELTA.n.sub.1 with respect to the cladding portion and an outer diameter of a while the second core portion has a mean relative refractive index difference of .DELTA.n.sub.2 with respect to the cladding portion and an outer diameter of b.
摘要翻译：本发明涉及具有能够在确保足够的MFD的同时降低色散斜率的结构的单模光纤。该单模光纤具有折射率分布，其中具有足够宽度的凹口设置在其核心区域的中心。特别地，当单模光纤中的第一芯部具有DELTA n1的平均相对折射率差时，该凹痕满足以下关系：ax（DELTA n2- DELTA n1）/（bx DELTA n2）> / = 0.04 相对于包层部分和外径，第二纤芯部分具有相对于包层部分的DELTA n2的平均相对折射率差和b的外径。

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