专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明专利

JPH08286129A SWITCHING AND CONNECTING METHOD FOR OPTICAL FIBER AND OPTICAL SWITCH DEVICE USING THE METHOD 失效
公开(公告)号：JPH08286129A
公开(公告)日：1996-11-01
申请号：JP8577195
申请日：1995-04-11
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： ITO YOSHIHISA , NARAOKA SEIICHI , OOMIZU KIYONORI , KAWAZOE HIDEYO , TOMITA NOBUO
IPC分类号： G02B26/08
摘要： PURPOSE: To provide a switching and connecting method for optical fibers which can switch light paths fast with small-sized constitution, causes no damage to an optical fiber at the time of connection, and suppresses angle deviation between optical fibers, and the optical switch device using the method. CONSTITUTION: The switching and connecting method for the optical fibers which switches the light paths by sequentially switching a master fiber 4 to optical fibers arrayed at a specific pitch and the optical switch device 1 uses the method; and this device is equipped with the optical fibers which are arrayed at the specific pitch, the master fiber 4 which is arranged opposite the optical fibers, a positioning device 5 which has a positioning groove 5a for positioning the master fiber 4 for the respective optical fibers, and a driving means 10 which moves the master fiber 4 in the array direction of the optical fibers and positions the tip side in the positioning groove; and the master fiber 4 is switched and connected to a desired optical fiber by a driving means to switch the light path. The side of the master fiber 4 is provided with a pressing means 15 which presses and positions the tip end side of the master fiber 4 in the positioning groove and connects each optical fiber and the master fiber 4 together across a specific gap.

62. 发明专利

JPH07159646A NON-HIT BRANCHING AND JOINING METHOD FOR OPTICAL PATH 失效
公开(公告)号：JPH07159646A
公开(公告)日：1995-06-23
申请号：JP33969093
申请日：1993-12-06
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KAWAZOE HIDEYO
IPC分类号： G02B6/42 , G02B6/28
摘要： PURPOSE:To switch optical communication without hit and to make the optical power level of the termination of an optical fiber being a switching destination the same as that of the termination of the optical fiber being a switching origin. CONSTITUTION:Light transmitted through the optical fiber 1 is branched by local detection from the branching part 3 of the optical fiber 1 on an optical transmitter 2 side; the branched light is received by a photodetector 4; an electrical signal O/E converted by the photodetector 4 is E/O converted by an E/O converter 5 and enters other optical fiber 6 from its one end 7; and the light is joined to the optical fiber 1 from a joining part 9 provided on the optical receiver 8 side of the optical fiber 6. After the E/O converted light is amplified, it enters the optical fiber 6. The light is joined by local injection in the joining part 9. The light is joined by an optical coupler in the joining part 9. The branching ratio of the optical coupler is set to 1:1.

63. 发明专利

JPH02308206A OPTICAL CONNECTOR 失效
公开(公告)号：JPH02308206A
公开(公告)日：1990-12-21
申请号：JP12896089
申请日：1989-05-24
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SHIGEMATSU TAKASHI , TAKEUCHI KIYOSHI , KAWAZOE HIDEYO , YAMADA HIROYUKI
IPC分类号： G02B6/38 , G02B6/40
摘要： PURPOSE:To obtain an optical connector which has good positioning accuracy and is easily fitted to a coated optical fiber end part by positioning optical connectors mutually with a substrate made of ceramic or metal and a lid plate, forming optical fiber insertion holes in a resin molding provided integrally in the substrate, and inserting and fixing optical fibers. CONSTITUTION:In the substrate 32, the hole 35 is formed between positioning grooves 34 in the same direction with the positioning grooves 34, the resin molding 36 is filled in the hole 35, and the necessary number of optical fiber insertion holes 37 are formed in the resin molding 36 in parallel while maintaining a specific position relation with the positioning grooves 34. Further, the resin molding 36 has a part 36a projecting from the rear end surface of the substrate 32 and guide grooves 38 used to insert the optical fibers into the optical fiber insertion holes 37 and a clad part mounting groove 39 for the coated optical fibers are formed in the top surface of the projection part 36a. A positioning pin 43 is held by the internal surfaces of the positioning grooves 34 and the reverse surface of the lid 33 and held in specific position relation with the optical fibers inserted into the optical connector insertion holes 37.

64. 发明专利

JPH02240543A SUBMERSION DETECTOR 失效
公开(公告)号：JPH02240543A
公开(公告)日：1990-09-25
申请号：JP6145889
申请日：1989-03-14
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KAMIKO KAZUO , KAWAZOE HIDEYO , MIYAZAWA HIDEHISA
IPC分类号： G01F23/292 , G01F23/28 , G01N19/10
摘要： PURPOSE:To surely detect the submersion to an optical fiber cable by curving a spring member, fixing its state by a water breaking member, allowing an optical fiber to pass through two parts of the spring member and holding it linearly. CONSTITUTION:A bending member 1 whose cross section is semicircular is fixed to the center part of a spring member 3 with an adhesive as shown in the figure (a), and on both sides of the member 3, a notch groove 2 is provided as an optical fiber holding part. Subsequently, by curving the member 3, fixing a water breaking member 4 consisting of band-like Japanese paper to both ends by a stopper 6, and allowing an optical fiber 5 to pass through the groove 2 as shown in the figure (b), a submersion detector is constituted. In such a state, when the detector is brought to submersion, the member 4 is groken and the member 3 returns to the original shape, the optical fiber 5 is bent as shown in the figure (c) and the light transmission quantity decreases. Therefore, by monitoring this decrease variation from the emitting end face of the optical fiber 5, the submersion can be detected.

65. 发明专利

JPH02222915A OPTICAL FIBER SWITCH 失效
公开(公告)号：JPH02222915A
公开(公告)日：1990-09-05
申请号：JP4407789
申请日：1989-02-23
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SHIRASAWA TORU , KAWAZOE HIDEYO
IPC分类号： G02B6/38 , G02B26/08
摘要： PURPOSE:To accurately and easily align the axis of optical fibers by forming reference surfaces where ferrules are positioned. CONSTITUTION:A 1st reference surface 4 where one flank 3b of a fixed ferrule 1b and one flank 3a of a moving ferrule 1a are pressed and positioned and a 2nd reference surface 5 where one flank 3a of the moving ferrule 1a and the opposite flank 3b are pressed and positioned are provided as internal surfaces of a box body 2. Then when optical fibers A and C are coupled optically, the moving ferrule 1a is pressed left by a right-side driving body 6b to press one flank 3a of the ferrule 1a against the 1st reference surface 4 and when optical fibers B and C are coupled optically, the moving ferrule 1a is pressed right by a left-side driving body 6a to press the other flank 3b of the moving ferrule 1a against the 2nd reference surface 5. Consequently, the axes of the optical fibers are securely and easily aligned.

66. 发明专利

JPH02146508A PLASTIC FERRULE FOR MULTIFIBER OPTICAL CONNECTOR 失效
公开(公告)号：JPH02146508A
公开(公告)日：1990-06-05
申请号：JP30131788
申请日：1988-11-29
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SHIRASAWA TORU , KAWAZOE HIDEYO
IPC分类号： G02B6/36 , G02B6/40
摘要： PURPOSE:To allow preciser axial alignment by forming a blanked part in correspondence to an aperture on the rear surface side of a body, thereby suppressing the deformation of the body. CONSTITUTION:The blanked part 10 having the same shape as the shape of the aperture 9 is provided on the rear surface of the plastic body 2 of the ferrule 1 so as to communicate with a hollow part 6. The ends of respective optical fibers which are paralleled in a parallel state at the time of mounting the ends of the multiple optical fibers into the ferrule 1 are simultaneously inserted from an insertion surface 4 side into the hollow part 6 of the body 2 and are respectively separately inserted into respective parallel holes 71 to 74. The end faces of the respective optical fibers are held flush with a butt surface 5 and thereafter, an adhesive is injected from the aperture 9 into the hollow part 5 in order to fix this state. The nonuniformity in the inside thickness of the upper and lower parts of the body is eliminated in this way, by which the camber of the body is prevented and the precise axial alignment of the end parts of the optical fibers with each other is executed.

67. 发明专利

JPH02130452A FLOODING DETECTION SENSOR FOR COMMUNICATION CABLE 失效
公开(公告)号：JPH02130452A
公开(公告)日：1990-05-18
申请号：JP28398888
申请日：1988-11-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YANAGAWA HISAHARU , KAWAZOE HIDEYO , MIYAZAWA HIDEHISA
IPC分类号： G01N19/10 , G02B6/38
摘要： PURPOSE:To achieve a smaller size of a detection sensor by arranging a water absorbing material which causes a fiber to bend near a fiber connection at one point of a fixing device for fixing the connection. CONSTITUTION:A plate spring 17 bent roughly in a U-shape as fixing device is fitted externally into ferrules 12 and 13 and end faces 17a and 17b bent of the plate spring 17 are pressed on other side end faces 12d and 13d of the ferrules 12 and 13 to fix the both. A water absorbing material 19 is fastened a least at one point of the plate spring 17, for example, at a position close to a tape fiber 11 of the end face 17b through an adhesive 18. The water absorbing material 19 mounted direct on the plate spring 17 of the connection is expanded so that fiber 11' is caused to bend therenear. A flooding is detected by monitoring a bending loss generated at this moment thereby allowing a reduction in the number of parts of a flooding detection mechanism.

68. 发明专利

JPH02130446A FLOODING DETECTION MECHANISM FOR OPTICAL CABLE CONNECTION 失效
公开(公告)号：JPH02130446A
公开(公告)日：1990-05-18
申请号：JP28398988
申请日：1988-11-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： MORIGUCHI AKIRA , KAWAZOE HIDEYO , MIYAZAWA HIDEHISA
IPC分类号： G01M11/00 , G02B6/38
摘要： PURPOSE:To obtain a flooding detection mechanism of a small optical cable connection by packing a water absorbing material which is adapted to separate each one side end face of connectors against a pressing force of a fixing device with an expansion when a flooding occurs. CONSTITUTION:When a flooding occurs at an optical cable connection, water enters into pin holes 12c and 13c of connectors 12 and 13 so that water absorbing materials 19 and 20, which causes water absorbing materials 19 and 20 to expand in the pin holes 12c and 13c. With the expansion of the water absorbing materials 19 and 20, a pressing force is applied to both end faces of a fitting pin 16 and as the pressing force increases, the connectors 12 and 13 are caused to separate from each other against a pressing force of the fixing device. This causes a connection loss at the connection of the optical cable thereby detecting a flooding.

69. 发明专利

JPH02128144A WATER INFILTRATION DETECTOR 失效
公开(公告)号：JPH02128144A
公开(公告)日：1990-05-16
申请号：JP28036988
申请日：1988-11-08
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI , MIYAZAWA HIDEHISA , KAWAZOE HIDEYO
IPC分类号： G01N21/41 , G02B6/02 , G02B6/38
摘要： PURPOSE:To detect a water infiltration to an object to be detected accurately by making water fill a gap formed previously between a pair of optical connector plugs when a flooding occurs in the object to be detected. CONSTITUTION:This apparatus comprises a pair of optical connector plugs 14 and 14' facing each other as mounted on optical fiber cores 12 and 12' for monitoring flooding and a storage case 16 and has a gap holding means 18 at opposed parts of the pair of plugs 14 and 14' to hold a gap therebetween. When water infiltrates at a water entry port 16a of the case 16, the water fills an internal space of the case 16 and hence, the water also fills a gap 20 between end faces of the pair of plugs 14 and 14'. This can improve a Fresnel reflection remarkably by a refractive index matching effect to reduce a Fresnel loss. The reduction in the loss is measured with a pulse tester at a light receiving end of the cores 12 and 12' thereby enabling accurate detection of water infiltration.

70. 发明专利

JPH02126129A SUBMERSION DETECTOR 失效
公开(公告)号：JPH02126129A
公开(公告)日：1990-05-15
申请号：JP27905588
申请日：1988-11-04
申请人： FURUKAWA ELECTRIC CO LTD
发明人： ISO TAKAAKI , MIYAZAWA HIDEHISA , KAWAZOE HIDEYO
IPC分类号： G01M11/00
摘要： PURPOSE:To increase the transmission loss to surely detect submersion by providing an optical connector plug matching part in a water-absorbent displacement part and displacing connector plugs in the direction orthogonal to the axial line at the time of submersion. CONSTITUTION:A submersion detector 10 is attached to submersion monitor coated optical fibers 12 and 12' and consists of a pair of optical connector plugs 14 and 14' matched to each other, a storage case 16 having a water inlet hole 16a where these plugs are stored, and a water-absorbent displacement part 18 arranged in this case. When water penetrates the case through the water inlet hole 16a, a water-absorbent expansible material 18A is expanded to forcibly push plugs 14 and 14' in the direction orthogonal to the axial line, and a gap 15a is generated in the matching part 15. Consequently, the transmission loss of fibers 12 and 12' is considerably increased. This increase is measured in one end by a pulse tester to surely detect submersion.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式