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21. 发明专利

JPS58106413A LIGHT REFLECTING SENSOR 失效
公开(公告)号：JPS58106413A
公开(公告)日：1983-06-24
申请号：JP20641381
申请日：1981-12-21
申请人： FUJIKURA LTD
发明人： WATANABE KOU , CHIGIRA SADAO , HAYAKAWA TOSHIYUKI , ARAI KATSUYUKI
IPC分类号： G01B11/00 , G01D5/26 , G01D5/30 , G01D5/353
摘要： PURPOSE:To maintain invariably high coupling efficiency by using a retroreflective reflector for the light reflecting sensor consisting of a light source, waveguide, reflector, and photodetector, and making a deviation in optical path betweek incident light and reflected light less than the luminous flux with of the incident light. CONSTITUTION:The light reflecting sensor guides light from the light source 1 such as a light emitting diode to a prescribed position through the waveguide 14, and the reflected light from the retroreflective reflector 13 enters the waveguide 14 again to reach the photodetector 6 through a photocoupler 6 and is transduced into an electric signal. The reflector 13 uses a bead reflector 7 or corner cube mirror 12 to make an optical path deviation l between the incident light and reflected light mush less than the luminous flux width of the incident light, and consequently the reflected light returns to an optical fiber 14 without fall, so that even if the angle of incident varies, the coupling efficiency is held invariably high.

22. 发明专利

JPS6017708A CONNECTING METHOD OF SINGLE MODE OPTICAL FIBER 失效
公开(公告)号：JPS6017708A
公开(公告)日：1985-01-29
申请号：JP12643883
申请日：1983-07-11
申请人： FUJIKURA LTD
发明人： YAMADA TAKESHI , YASUHARA HIKARI , WATANABE KOU
IPC分类号： G02B6/24 , G02B6/36 , G02B6/38
摘要： PURPOSE:To save labor for a connecting work by using one multi-mode optical fiber, two connectors and one photodetector. CONSTITUTION:When connecting some single mode optical fiber 2, this single mode optical fiber 2 and a multi-mode optical fiber 11 are connected by a connector 12 in the far end. In the connecting part, a power meter 13 is connected to the end part of this multi-mode optical fiber 11. The diameter of the multi- mode optical fiber 11 is large such as 60-90mum, therefore, the connection from the single mode optical fiber 2 to the multi-mode optical fiber 11 in the far end can reduce a loss to about 0dB. Accordingly,a matching loss due to axial shift of a core of the single mode optical fibers 1, 2 can be detected by the power meter 13 of the connecting point, therefore, the axial matching of the core can be executed by operating a connector 4.

23. 发明专利

JPS59219707A METHOD FOR ALIGNING CORE OF SINGLE MODE OPTICAL FIBER 失效
公开(公告)号：JPS59219707A
公开(公告)日：1984-12-11
申请号：JP9445483
申请日：1983-05-27
申请人： FUJIKURA LTD
发明人： YAMADA TAKESHI , WATANABE KOU , OOSATO KAZUKUNI
IPC分类号： G02B6/24 , G02B6/255 , G02B6/38 , G02B7/26
摘要： PURPOSE:To automatically align cores of single mode optical fibers by putting the center of the cores on coordinates and finding the location of the center numerally from video signals obtained by using a microscope and TV camera. CONSTITUTION:An observed image focussed on the core of the end part of an optical fiber 10 by means of a microscope 16 is photoelectrically scanned by the image pickup tube of a TV camera 18 and a video signal is generated. At this time, an intensity distribution which is produced when one scanning line 241 (or 242) scans a fiber image 100 is inputted into a computer 20. By using the computer 20, abscissas Z2 and Z3 corresponding to both sides of a bright part in the vicinity of the center of the observed image 100 are found, and then, coordinates D at almost center of the Z2 and Z3 are found. Thereafter, coordinates Z5 of the maximum value between the Z2 and D and Z3 and D are found and minimum values A1 and A2 between the D and Z5 and D and Z6 are found, and finally, the coordinates A0 of the center of the A1 and A2 are found. By moving the optical fibers 10 so that the coordinates A0 of right side and left side optical fibers 10 coincide with each other, the cores are automatically aligned.

24. 发明专利

JPS5972414A Aligning method of center of optical fiber 失效
标题翻译：光纤中心对准方法
公开(公告)号：JPS5972414A
公开(公告)日：1984-04-24
申请号：JP18354982
申请日：1982-10-19
申请人： Fujikura Ltd , Furukawa Electric Co Ltd:The , Nippon Telegr & Teleph Corp , Sumitomo Electric Ind Ltd
发明人： KATOU YASUYUKI , YANAGAWA HISAHARU , TATEGAMI SHIGERU , TSUCHIDA YOSHIO , TODA YUUICHI , TANAKA SHIGERU , WATANABE KOU
IPC分类号： G02B6/24 , G02B6/255
CPC分类号： G02B6/2551
摘要： PURPOSE:To realize energy saving of a connecting work by irradiating parallel rays from the side face of a pair of opposed optical fibers, photodetecting its transmission ray, recognizing a core position, executing an alignment, and concentrating a necessary device on a connecting part. CONSTITUTION:When parallel rays are irradiated to an optical fiber consisting of a core 2 and a clad 3, the outside line of the core 2 becomes a total dark part like q0 shown in the figure and its position is recognized. Therefore, a parallel ray irradiating mechanism 2 and a photodetecting mechanism 3 are placed symmetrically on a pair of opposed optical fibers 1a, 1b, and parallel rays R are irradiated, a bright and dark distribution appears on the photodetecting mechanism 3, a position of the core is recognized, the connecting end part of the optical fibers 1a, 1b is adjusted finely, and the alignment is exeucted. Therefore, even in case of a long fiber, it is unnecessary to place hands and a measuring instrument in the end part, an apparatus can be concentrated on the connecting part, and energy saving is realized.
摘要翻译：目的：通过从一对相对光纤的侧面照射平行光线来实现连接工作的节能，对其透射光线进行光电检测，识别芯位置，执行对准，并将必要的设备集中在连接部分上。构成：当将平行光照射到由芯2和包层3组成的光纤时，芯2的外侧线成为如图所示的q0的全部暗部，并且其位置被识别。因此，平行射线照射机构2和光电检测机构3对称放置在一对相对的光纤1a，1b上，并且照射平行光线R，在受光器3上出现明暗的分布，认为光纤1a，1b的连接端部被精细调节，并且排列对准。因此，即使在长纤维的情况下，也不需要将手和测量仪器放在端部，所以可以将装置集中在连接部上，实现节能。

25. 发明专利

JPS592013A Guide device of optical fiber 失效
标题翻译：光纤指导装置
公开(公告)号：JPS592013A
公开(公告)日：1984-01-07
申请号：JP3003283
申请日：1983-02-23
申请人： Fujikura Ltd , Nippon Telegr & Teleph Corp
发明人： TACHIKURA MASAO , OOSATO KAZUKUNI , WATANABE KOU , YAMADA TAKESHI
IPC分类号： G02B6/24 , G02B6/255 , G02B6/38
CPC分类号： G02B6/2551 , G02B6/3805 , G02B6/3838
摘要： PURPOSE:To contain easily and surely optical fibers which are not paralleled owing to an electrostatic phenomenon into the V grooves of a fusion connector, by providing fiber guides of metallic materials projecting upward from a V- grooved base. CONSTITUTION:The V-groove guide 28 of a fusion connector for optical fibers, a guide 28 projecting upward in the upper half part from a V-groove base 20, the V-groove 30 of the base 20, and a fiber guide 50 of a metallic material provided with deep slits 52 of the same number as the number of 20 are provided. Optical fibers 12 which cross each other and do not parallel with each other owing to an electrostatic phenomenon are matched in parallel by the above- mentioned guide 30, and static charge is discharged, whereby the optical guides are easily and surely stored in the grooves 30, 22.
摘要翻译：目的：通过提供从V形槽底部向上突出的金属材料的纤维引导件，容易且可靠地将由于静电现象而导致的融合连接器的V槽中的光纤并入。构成：用于光纤的熔接连接器的V形槽引导件28，从V形槽基座20向上凸起的上半部分的引导件28，基座20的V形槽30以及光纤引导件50 设置有与20个相同数量的深狭缝52的金属材料。由于静电现象而彼此交叉并且彼此不平行的光纤12由上述引导件30并联，并且静电荷被排出，由此光导体容易且可靠地存储在槽30中，22。

26. 发明专利

JPS59115A Method for connecting optical fiber by fusing 失效
标题翻译：通过熔融连接光纤的方法
公开(公告)号：JPS59115A
公开(公告)日：1984-01-05
申请号：JP10918782
申请日：1982-06-25
申请人： Fujikura Ltd , Nippon Telegr & Teleph Corp
发明人： HAIBARA TADASHI , MIYAJIMA YOSHIAKI , YAMADA TAKESHI , WATANABE KOU
IPC分类号： G02B6/24 , G02B6/255
CPC分类号： G02B6/2551
摘要： PURPOSE:To prevent occurrence of minute scars in the course of connecting optical fibers by fusion and improve the strength of the connected part, by performing the heating and fusion of optical fibers under an inactivated atmosphere. CONSTITUTION:A chamber 10 to be used for creating an inactivated atmosphere is a square box type one made of, for example, transparent quartz, and composed of a main body 12 and top part 14 coupled with the main body by means of a hinge 16. Two optical fibers 20 to be connected with each other are inserted into the chamber 10 through holes 18 installed at the boundary of the main body 12 and top part 14. The optical fibers 20 are fused and connected with each other by arc discharge of tungsten electrodes 30 while an inactive gas is made to flow by blowing in the chamber 10. After the optical fibers 20 are connected by fusion, the top part 14 is opened and the connected optical fiber 20 is taken out. In this case, the strength of the connected part by fusion can be improved as shown by the graph where the Weibull distribution A when the fusion is made by the arc discharge under an Ar gas atmosphere and that B when fusion is made in air are shown.
摘要翻译：目的：为了防止在融合光纤的过程中发生微小的疤痕，并通过在失活的气氛下进行光纤的加热和融合，提高连接部分的强度。构成：用于产生灭活气氛的室10是由例如透明石英制成的方形盒型的，由主体12和顶部14构成，主体12和顶部14通过铰链16与主体联接两个彼此连接的光纤20通过安装在主体12和顶部14的边界处的孔18插入到腔室10中。光纤20通过钨的电弧放电彼此熔合并相互连接电极30通过吹入室10而使惰性气体流动。在通过熔化连接光纤20之后，打开顶部14，取出连接的光纤20。在这种情况下，可以提高连接部分的融合强度，如图中所示，当在Ar气体气氛下通过电弧放电进行融合时的威布尔分布A和在空气中进行熔融时形成B时的图表。

27. 发明专利

JPS58211733A Multiplexer and demultiplexer for light signal 失效
标题翻译：用于光信号的多路复用器和解复用器
公开(公告)号：JPS58211733A
公开(公告)日：1983-12-09
申请号：JP9580582
申请日：1982-06-04
申请人： Fujikura Ltd
发明人： TANAKA MASAO , WATANABE KOU
IPC分类号： G02B6/28 , G02B6/34
CPC分类号： G02B6/12007 , G02B6/29361 , G02B6/2938
摘要： PURPOSE:To obtain an optical multiplexer and demultiplexer which requires the precise work of only the polishing of a slanting end surface of an optical fiber while the number of parts is decreased, by providing the optical fiber with the function of a prism. CONSTITUTION:The end surface of the optical fiber 20 is polished to obtain the slanting surface with an angle alpha, and an optical filter 21 which is not an unnecessary light absorption type and has wavelength selectivity such as an interference filter and a dichroic mirror is vapor-deposited on the slanting surface. Then, lenses 23 and 24 and optical fibers 25 and 26 are arranged at a specific angle theta; sintheta=nsinalpha, where (n) is the refractive index of the core of the optical fiber 20. When this is used as a demultiplexer, light signals with wavelength lambda1 and wavelength lambda2 are entered at the angle theta of incidence by a lens 23 from the optical fiber 25; the light signal with the wavelength lambda1 propagate in the filter 21 and optical fiber 20 and the light signal with the wavelength lambda2 is reflected by the filter 21 to enter the lens 24 and then enters the optical fiber to be demultiplexed from each other.
摘要翻译：目的：为了获得一种光复用器和解复用器，其需要通过提供具有棱镜功能的光纤的数量来减少光纤的倾斜端面的精确工作。构成：对光纤20的端面进行研磨，得到角度α的倾斜面，不具有不必要的光吸收型而具有波长选择性的滤光器21，例如干涉滤光镜和分色镜，是蒸汽 - 沉积在倾斜表面上。然后，透镜23和24以及光纤25和26以特定角度θ布置; sintheta = nsinalpha，其中（n）是光纤20的纤芯的折射率。当这被用作解复用器时，具有波长λ1和波长λ2的光信号以入射角θ通过透镜23从光纤25; 具有波长λ1的光信号在滤光器21和光纤20中传播，并且具有波长λ2的光信号被滤光器21反射，以进入透镜24，然后进入待被解复用的光纤。

28. 发明专利

JPS58205109A Optical fiber core 失效
标题翻译：光纤芯
公开(公告)号：JPS58205109A
公开(公告)日：1983-11-30
申请号：JP8945182
申请日：1982-05-25
申请人： Fujikura Ltd , Nippon Telegr & Teleph Corp
发明人： TANAKA CHIHAYA , SHINOHARA HIROMICHI , SUGAWARA YASUYUKI , WATANABE KOU
IPC分类号： C03C25/10 , G02B6/44
CPC分类号： G02B6/4402
摘要： PURPOSE:To enable the immediate checking of the twist in an optical fiber core by providing a linear display to said core in the longitudinal direction thereof. CONSTITUTION:A linear print 12a of the color differing from the color of the coating material 12 of an optical fiber 11 is applied on the surface of said material in the longitudinal direction thereof. Whether the optical fiber core is twisted or not is checked immediately from whether the display 12a is twisted or not.
摘要翻译：目的：通过在其长度方向上向所述芯线提供线性显示，以便立即检查光纤芯中的扭曲。构成：将与光纤11的涂层材料12的颜色不同的颜色的线性印刷版12a在其长度方向上施加在所述材料的表面上。检查显示器12a是否扭曲，立即检查光纤芯线是否扭曲。

29. 发明专利

JPS58196511A Method for terminating metallic pipe containing optical fiber 失效
标题翻译：用于终止含有光纤的金属管的方法
公开(公告)号：JPS58196511A
公开(公告)日：1983-11-16
申请号：JP7846782
申请日：1982-05-12
申请人： Fujikura Ltd
发明人： SETAISHI YUKIO , WATANABE KOU , HONMA YASUO
IPC分类号： G02B6/38 , G02B6/44
CPC分类号： G02B6/4439 , G02B6/3889
摘要： PURPOSE:To prevent the generation of disconnection in optical fibers in the stage of forming a juncture without receiving the influence of the thermal elongation or contraction of a metallic pipe or the influence of the oscillation thereof by fixing a specified length with an expandable plastic in the metallic pipe or in an adapter connected to the metallic pipe. CONSTITUTION:A cavity is formed by a specified length (l) from the end part of a hard aluminum pipe 1 in a bushing 8 having such a hole part wherein an optical fiber cable 4 in a hard aluminum pipe 5 is held at the center thereof. An expandable plastic 9, for example, PE or the like contg. a foaming agent is packed in the cavity, and is heated with a heating means such as a heater from the outside so as to expand, whereby the inside of the cavity is packed with the foamed plastic 9-b. It is also possible to hold the optical fiber cable roughly at the center of an adapter by packing the expandable plastic into the adapter and heating the same from the outside so as to expand thereby packing the inside of the cavity.
摘要翻译：目的：为了防止在形成接合处的光纤中产生断开，而不会受到金属管的热伸长或收缩的影响，或者通过用可膨胀塑料固定规定长度来影响其振动的影响金属管或连接到金属管的适配器中。构成：在硬铝铝管1的端部形成有具有这样的孔部的衬套8中的规定长度（l）的空腔，其中将硬铝管5中的光纤电缆4保持在其中心。可膨胀塑料9，例如PE等。将发泡剂填充在空腔中，并且从外部用加热装置如加热器加热以膨胀，由此空腔内部填充泡沫塑料9-b。也可以通过将可膨胀塑料包装到适配器中并将其从外部加热，从而将光纤电缆粗略地保持在适配器的中心，从而膨胀，从而将空腔内部包装。

30. 发明专利

JPS58105643A OPTICAL COMMUNICATION SYSTEM 失效
公开(公告)号：JPS58105643A
公开(公告)日：1983-06-23
申请号：JP20461881
申请日：1981-12-18
申请人： FUJIKURA LTD
发明人： OGOU HIROSHI , WATANABE KOU
IPC分类号： H04J99/00 , H04B10/27 , H04B10/278 , H04J14/00 , H04J14/02 , H04L12/40
摘要： PURPOSE:To use light from a single light source for plural channels and to simultaneously communicate between plural points by separating light from the light source into plural wave-length. CONSTITUTION:Optical fibers 2 are connected in series among plural points A, B, C, D to transmit/receive signals and light is supplied from a light source 1 having plural wave length. Separating/coupling devices 3, 4, 5, 6 to separate light from the light source 1 into plural wave length or couple the separated wave length are fitted to respective points A, B, C. D. Respective separating/ coupling devices 3-6 consist of light separating parts 31, 41, 51, 61, photocoupling parts, 32, 42, 52, 62, light modulators 33, 43, 53, 63, and light demodulators 34, 44, 54, 64. An optical device using a prism, a half mirror, etc. can be used as a separating/coupling part and devices utilizing electrooptic and magnetooptic effects can be used for the modulators and demodulators.

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