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1. 发明专利

JP2013171181A Multi-core fiber 审中-公开
标题翻译：多芯光纤
公开(公告)号：JP2013171181A
公开(公告)日：2013-09-02
申请号：JP2012035181
申请日：2012-02-21
申请人： Hitachi Cable Ltd , 日立電線株式会社
发明人： OGURA AKIRA , YO HEI , OSONO KAZUMASA , WATANABE TOMONORI , SATO YOSHIAKI
IPC分类号： G02B6/04
摘要： PROBLEM TO BE SOLVED: To provide multi-core fiber in which crosstalk is less likely to occur even when the distance between adjacent cores is short, which can achieve higher density of a core as compared with conventional fiber, and can contribute to capacity increase and multiplexing of an optical transmission line.SOLUTION: Each of graded index multi-core fiber 10, 20 includes multiple cores 12a, 12b in a clad 11, and the multiple cores 12a, 12b are arranged in one or more folds of even-numbered angle shapes or rectangular grating shapes, in a cross-sectional view. Phase constant intervals of a first core 12a and a second core 12b being adjacent are made to be identical, and a phase constant of the second core 12b is positioned at the center of the phase constant interval of the first core 12a.
摘要翻译：要解决的问题：为了提供即使相邻芯之间的距离较短也可能发生串扰的多芯光纤，其可以实现与常规光纤相比更高的芯密度，并且可以有助于容量增加和光传输线的多路复用。解码：每个渐变折射率多芯光纤10,20包括在包层11中的多个芯12a，12b，并且多个芯12a，12b布置成偶数角度的一个或多个折叠形状或矩形光栅形状，在横截面视图中。相邻的第一芯12a和第二芯12b的相位恒定间隔相同，第二芯12b的相位常数位于第一芯12a的相位恒定间隔的中心。

2. 发明专利

JP2011257310A Fiber sensor 有权
标题翻译：光纤传感器
公开(公告)号：JP2011257310A
公开(公告)日：2011-12-22
申请号：JP2010133250
申请日：2010-06-10
申请人： Hitachi Cable Ltd , 日立電線株式会社
发明人： OGURA AKIRA , OSONO KAZUMASA , SATO SHINOBU , SATO YOSHIAKI , YAO BING
IPC分类号： G01B11/255 , G02B6/02 , G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide a fiber sensor that is high in flexibility and made longer, and detects bending at any position in a length direction and also detects the bending direction.SOLUTION: The fiber sensor has a sensor cable 2 having at least one optical fiber 5. The optical fiber 5 includes a core 7, a clad 8 covering a periphery of the core 7, and a plurality of holes 9 formed in the clad 8 to have their centers positioned on a coaxial circle centering on the center of the core 7. A portion where an interval between adjacent holes 9 is wider, at at least one place along the coaxial circle, than other intervals along the coaxial circle and the light confinement effect is lower, serves as a light leak part 10. The optical fiber 5 has a larger bending loss when the sensor cable 2 is bent in a direction with the light leak part 10 located outside than when the sensor cable 2 is bent in a direction with the light leak part 10 not located outside.
摘要翻译：要解决的问题：提供一种柔性高且长度较长的纤维传感器，并且检测在长度方向上的任何位置处的弯曲并且还检测弯曲方向。解决方案：光纤传感器具有至少一个光纤5的传感器电缆2.光纤5包括芯体7，覆盖芯部7的周边的包层8以及形成在芯体7中的多个孔9。包层8使它们的中心位于以核心7的中心为中心的同轴圆上。相邻孔9之间的间隔在同轴圆的至少一个位置处比沿着同轴圆的其它间隔更宽的部分光限制效果较差，用作漏光部分10.当传感器电缆2沿着与泄漏部分10位于外侧的方向弯曲时，光纤5具有较大的弯曲损耗，比传感器电缆2弯曲时在光泄漏部分10的方向上不位于外部。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JPH06331840A OPTICAL MODULE 失效
公开(公告)号：JPH06331840A
公开(公告)日：1994-12-02
申请号：JP12415093
申请日：1993-05-26
申请人： HITACHI CABLE
发明人： NISHIO TOMOYUKI , MURAKAMI KAZUYA , SATO YOSHIAKI
IPC分类号： G02B6/122 , G02B6/12 , G02B6/42 , H01L27/15
摘要： PURPOSE:To make it possible to adjust the optical axis with another optical member and to prevent the generation of cracks by forming a projecting part having a joint surface to be joined to an optical member atop a supporting base for supporting this optical member. CONSTITUTION:The projecting part 13 of a rectangular shape having the flat joint surface 12 is formed atop a metallic block 11 as the supporting base for supporting the quartz optical waveguide 10. The joint surface 12 of the projecting part 13 is subjected to metal coating and is provided thereon with solder 14. The base material of metal is exposed in the other parts exclusive of the joint part 12 of the metallic block 11 and an oxidized film is formed on the flanks 13a of the projecting part 13. The metal coating is applied on the rear surface of the quartz optical waveguide 10 as well, i.e., the metal block 11 side surface. The quartz optical waveguide 10 and the metallic block 11 are fixed by the solder 14. The height of the projecting part 13 is determined by the amt. of the solder 14 to be used for joining.

4. 发明专利

JPH0792335A STRUCTURE OF HERMETIC SEALING PART OF OPTICAL FIBER 失效
公开(公告)号：JPH0792335A
公开(公告)日：1995-04-07
申请号：JP21714793
申请日：1993-09-01
申请人： HITACHI CABLE
发明人： KADOI TAKAYUKI , SAITO RYUICHI , OSUGA KAZUSHI , OGOSHI MIKIO , SATO YOSHIAKI
IPC分类号： G02B6/42 , G02B6/00 , H01L31/0232 , H01L33/48 , H01S5/00 , H01L33/00 , H01S3/18
摘要： PURPOSE:To provide a structure for hermetic sealing of an optical fiber which prevents peeling of the boundary surface between a low melting glass and an adhesive and improves the reliability of an optical module. CONSTITUTION:A small-diameter projecting part 11a of a hollow reinforcing sleeve 11 having a projecting shape in the sectional shape at its end is fitted into a cylindrical introducing part 10 integrally formed with a package 2 from its end surface 10a side and the optical 7 is inserted into this reinforcing sleeve 11 and is fixed with low melting glass 13. Adhesive 14 is packed in the reinforcing sleeve 11.

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