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31. 发明专利

JPS56114910A MULTICORE OPTICAL FIBER CONNECTOR 失效
公开(公告)号：JPS56114910A
公开(公告)日：1981-09-09
申请号：JP1776380
申请日：1980-02-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJII YOUJI , MINOWA JIYUNICHIROU
IPC分类号： G02B6/36 , G02B6/38 , G02B6/40
摘要： PURPOSE:To improve precision and to shorten the time of etching by making V grooves for mounting optical fibers and a knock pin on a silicon substrate by anisotropic etching and by reducing the extent of etching for the knock pin. CONSTITUTION:On silicone substrate 8, V grooves for optical fibers 71-7n and a V groove for knock pin 11 are formed by anisotropic etching. When through hole is formed by deepening the groove for knock pin 11 until the reverse surface of substrate 8, auxiliary substrate 13 having a groove formed at the position corresponding to the through hole is bonded and fixed to the reverse side of substrate 8. After the groove is deepened at a prescribed depth, the groove is deepened by grinding its bottom surface. In either method, the extent of anisotropic etching is small. Consequently, the precision of the multicore optical fiber connector is improved the time of the etching can be shortened.

32. 发明专利

JPS56114909A MULTICORE OPTICAL FIBER CONNECTING METHOD 失效
公开(公告)号：JPS56114909A
公开(公告)日：1981-09-09
申请号：JP1776280
申请日：1980-02-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJII YOUJI , MINOWA JIYUNICHIROU
IPC分类号： G02B6/40 , G02B6/36 , G02B6/38
摘要： PURPOSE:To improve the connection precision of a multicore optical fiber by manufacture a plug for the multicore optical fiber by photoetching technique, and by nearly eliminating the need for adjustments during the assembling of a plug assembly. CONSTITUTION:While a silicon substrate is worked in a trapezoid shape by anisotropic etching, many parallel V-shaped grooves are made in the top surface of the tarpezoid by anisotropic etching. In those V-shaped grooves, optical fibers 3 and 3' are buried and then fixed to obtain a plug. Those are aligned and made to butt against each other on internal wall surfaces of L-shaped block 2 as reference surfaces. Consequently, the manufacture of the plug is performed by using photoetching technique, so that the plug of high precision can easily be obtained. Further, since this assembling process nearly eliminates the need for adjustments, the plug assembly is also simple.

33. 发明专利

JPS566209A OPTICAL FIBER CONNECTOR WITH SPHERICAL LENS 失效
公开(公告)号：JPS566209A
公开(公告)日：1981-01-22
申请号：JP8175879
申请日：1979-06-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJII YOUJI , SARUWATARI MASATOSHI , MINOWA JIYUNICHIROU
IPC分类号： G02B6/32
摘要： PURPOSE:To improve reliability to mechanical vibration, etc. by etching the end of optical fibers to concave shape by an etching solution and mounting and bonding spherical lenses of a diameter equal to or larger than the diameter of the inside wall cylinder of the concave portions into the concave portions. CONSTITUTION:The end of an optical fiber composed of a core 1, a clad 2 and a starting quartz pipe 3 is etched by a hydrofluoric acid and a spherical lens 5 is mounted in the concave portion thus formed and is bonded and fixed by an adhesive agent 5. The spacing between the spherical lens 4 and core 1 is made specified value through etching operation. These optical fibers 11, 11' are mounted to the connector in such a manner that the spherical lenses 13, 13' are on a straight line and the fibers 11, 11' are fixed to the jacket by means of adhesive agents 17, 17'. The value of x is so determined that the incident light from the optical fibers 11, 11' is emitted as parallel luminous fluxes by the spherical lenses 13, 13'. Since the spherical lenses and fibers are integrated, they do not receive the influence of vibration and the reliability is high.

34. 发明专利

JPS55134806A PRODUCTION OF PLANE DIFFRACTION GRATING 失效
公开(公告)号：JPS55134806A
公开(公告)日：1980-10-21
申请号：JP4166979
申请日：1979-04-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJII YOUJI , MINOWA JIYUNICHIROU
IPC分类号： G01J3/18 , G02B5/18 , G02B6/122
摘要： PURPOSE:To increase diffraction efficiency and reduce etching time by using the solution whose rate of etching is anisotropic to crystal planes and the solution whose rate of etching is isotropic thereto in the foregoing order. CONSTITUTION:At the time of producing the plane diffraction grating having the groove threads of an inverted triangle shape in section of a grating pitch P and angle theta where, e.g., blazed wavelength is let lambdaBAngstrom , the main plane 11 of silicon single crystal is made the crystal plane inclined by theta to the (111) plane of the crystal, and the single crystal 13 whose side faces 12 are the (110) plane perpendicular to this is prepared. Thread-form mask layers 14 of the width D sufficiently smaller than the pitch P are parallel-arrayed on the plane 11 at the pitch P and the 1st etching is applied by the solution such as KOH whose rate of etching differs with the crystal and where the inner side face 15L, 15R of the thread grooves 16 are formed of (111) plane, the 1st etching is ended. Next, the etching is done by an isotropic solution such as hydrofluoric-acid-base etching solution until there are no more thread faces 17 of the layers 14, whereby the inner side faces 15L', 15R' of the grooves 16' are formed. The mask layers 14 are removed to complete the diffraction grating. The one free from defect planes is obtained in a time shorter than that for obtaining the thread grooves 16' simply by the 1st etching solution.

35. 发明专利

JPS55101904A CONNECTOR FOR MULTICORE OPTICAL FIBER CABLE 失效
公开(公告)号：JPS55101904A
公开(公告)日：1980-08-04
申请号：JP907679
申请日：1979-01-31
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJII YOUJI , MINOWA JIYUNICHIROU
IPC分类号： G02B6/38 , G02B6/40
摘要： PURPOSE:To achieve the smaller size and higher accuracy of the connector for multicore optical fibers by performing the alignment of the optical fibers by the V- grooves formed through the use of anisotropic etching techniques on a silicone single crystal and the butting thereof by knock pins. CONSTITUTION:Plugs 1 and 1' are butted and aligned by aligning knock pins 3 and 3' into a split sleeve 5 and knock pins 4 and 4' into a split sleeve 6 by way of an adapter 2. Fibers 7-1-7-n are held aligned and fixed in the V-grooves of the V- groove plate 8 formed through anisotropic etching on a silicon single crystal. The V-grooves of the silicon V-groove plate 8 and the knock pins 3 and 4 are positioned with good accuracy by the predetermined procedures. In this way, the multiconnector of a small size and high accuracy may be realized.

36. 发明专利

JPS5413349A SWITCH FOR OPTICAL FIBER 失效
公开(公告)号：JPS5413349A
公开(公告)日：1979-01-31
申请号：JP7884877
申请日：1977-07-01
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： AOYAMA KOUICHI , MINOWA JIYUNICHIROU
IPC分类号： G02B26/08 , G02B6/35 , H01H35/00
摘要： PURPOSE:To reduce the size, to improve the reliability and to produce a switch matrix by inserting a movable optical medium, which is equipped with a waveguide, into the space between input and output optical fibers.

37. 发明专利

JPS544153A DIRECTIVE COUPLER USING OPTICAL WAVEGUIDE 失效
公开(公告)号：JPS544153A
公开(公告)日：1979-01-12
申请号：JP6883177
申请日：1977-06-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SAWAMOTO KENICHI , MINOWA JIYUNICHIROU
IPC分类号： G02B6/28 , G02B6/14 , G02B6/34
摘要： PURPOSE:To provide a miniature directive coupler, which also effects mode conversion, by mounting a diffraction grating perpendicularly to the axial direction upon one of the claddings forming an optical waveguide portion so as to couple the cores forming optical guidewaves.

38. 发明专利

JPS544147A SPECTROSCOPE 失效
公开(公告)号：JPS544147A
公开(公告)日：1979-01-12
申请号：JP6883077
申请日：1977-06-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGATA YOUICHI , MIKI TETSUYA , MINOWA JIYUNICHIROU
IPC分类号： G02B5/18 , G02B6/293 , G02B6/34 , G02B27/10
摘要： PURPOSE:To provide a spectroscope, which is easy in production, which is suitable for mass-production and which is excellent in economy, by using a transparent type diffraction grating having a saw-tooth shape.

39. 发明专利

JPS5221743A ELASTIC SURFACEEWAVE UNIT AND ITS PRODUCTION METHOD 失效
公开(公告)号：JPS5221743A
公开(公告)日：1977-02-18
申请号：JP9777175
申请日：1975-08-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MINOWA JIYUNICHIROU , YOSHIKAWA SHIYOUKICHIROU
IPC分类号： H03H3/08 , H03H9/64
摘要： PURPOSE:In order to prevent the influence on the frequency-response characteristics by the interval between trasnducers, in an elastic surface-wave unit in which two transducers are formed on its base.

40. 发明专利

JPS5758112A Positioning structure of optical connector 失效
标题翻译：光连接器的定位结构
公开(公告)号：JPS5758112A
公开(公告)日：1982-04-07
申请号：JP13226480
申请日：1980-09-25
申请人： Fujitsu Ltd , Nippon Telegr & Teleph Corp
发明人： MASUKO TAKAYUKI , SHIGIHARA MASAYOSHI , SHINGIYOUJI TADAO , MINOWA JIYUNICHIROU , FUJII YOUJI
IPC分类号： G02B6/38
CPC分类号： G02B6/3839 , G02B6/3873 , G02B6/3885
摘要： PURPOSE:To achieve high-precision positioning by utilizing for the positioning of an optical fiber the side-edge groove of a member for arraying the optical fiber which has grooves for arraying an holding optical fibers. CONSTITUTION:This structure is provided with an optical fiber 6, members 7 and 7' for arraying optical fibers, a reference member 8, a guide pin 9 for the opposite connector, and a blocks 10 and 10' for sandwiching the members 7 and 7'. In the members 7 and 7', V-shaped grooves 11 for holding optical fibers 6 and formed precisely at equal intervals and side-end parts 7a and 7'a are cut in the centers of the V-shaped grooves. The members 7 and 7' hold optical fibers 6 in the respective grooves and at the side-end parts and, while pressed against the reference surface 8a of the reference member 8 as shown by an arrow P, are sandwiched between the blocks 10 and 10'.
摘要翻译：目的：通过利用光纤的定位来实现高精度定位，用于排列具有用于排列保持光纤的凹槽的光纤的阵列的构件的侧边槽。构成：该结构设置有光纤6，用于排列光纤的构件7和7'，参考构件8，用于相对的连接器的引导销9和用于夹持构件7和7的块10和10' '。在构件7和7'中，在V形槽的中心处切割用于保持光纤6并且以等间隔精确地形成的V形槽11和侧端部7a和7'a。构件7和7'将光纤6保持在相应的槽和侧端部分中，并且如箭头P所示地压在基准构件8的基准表面8a上，夹在块10和10之间 '。

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