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1. 发明专利

JPS62111211A AXIAL ALIGNMENT METHOD FOR CONSTANT POLARIZATION OPTICAL FIBER 失效
公开(公告)号：JPS62111211A
公开(公告)日：1987-05-22
申请号：JP25052285
申请日：1985-11-08
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SUGIYAMA YUJI , ODA TAKAHARU , KATO YASUYUKI , MIYAUCHI MITSURU
IPC分类号： G02B6/024 , G02B6/26
摘要： PURPOSE:To axially align constant polarization optical fibers with good accuracy at a low cost by making a light signal from a light exit system incident on both the constant polarization optical fibers, measuring the light power of the linearly polarized waves orthogonal with each other of the transmitted light signal and axially aligning the optical fibers in accordance with the measured value. CONSTITUTION:The light signal L emitted from the light source 13 is successively made incident on a prism 14, the constant polarization optical fiber 1, a matching liquid 3, the constant polarization optical fiber 2, a prism 15, and light power meters 16, 17 in the stage of axially aligning the constant polarization optical fibers 1, 2. The light signal is divided to components Lx, Ly via the prism 15 and said components are inputted to the meters 16, 17. The ends of the fibers 1, 2 are relatively moved in X-, Y-axis directions to align the cores thereof to each other while the light power of the component Lx is kept monitored with the meter 16. The ends of the fibers 1, 2 are relatively rotated in the 0 direction to match the planes of polarization thereof with each other while the light power of the component Ly is kept monitored with the meter 17. The axial alignment is thus executed simply by the inexpensive meter 16.

2. 发明专利

JPS5854306A TERMINAL TREATMENT FOR COVERED OPTICAL TRANSMISSION MATERIAL 失效
公开(公告)号：JPS5854306A
公开(公告)日：1983-03-31
申请号：JP15160381
申请日：1981-09-25
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MIYAUCHI MITSURU , MIKAWA IZUMI , UMEMURA TETSUYA
IPC分类号： G02B6/36 , G02B6/00 , G02B6/38
摘要： PURPOSE:To improve the treatment efficiency, by adjusting relatively the outside diameter of the end part of a covered optical transmission material and the inside diameter of a metallic sleeve to cover the metallic sleeve on the outside circumference of the end part of the optical transmission material and fixing them by drawing work and finishing the end face of the optical fiber into a specular surface. CONSTITUTION:A coating layer 2 is removed from an end part 3' of a covered optical transmission material 3, and a metallic sleeve 4 is covered on this part where the layer 2 is removed, and the metallic sleeve 4 is subjected to drawing work by a manual press tool or the like to fix the metallic sleeve 3 and the end part 3' to each other. In this case, since the end part 3' of the optical transmission material 3 and the metallic sleeve 4 are fitted to each other while keeping a desired relative gap by the adjusting means due to removal of the coating layer 2, a fixed state is obtaind only by deforming the metallic sleeve thereafter by a prescribed quantity, and it is unnecessary to wait for an adhesive to harden, and the loss of time is avoided. The terminal part is cut and polished along the line of a section VI to finish the end face of an optical fiber 1 into a specular surface.

3. 发明专利

JPS56126818A FINE ADJUSTMENT METHOD OF OPTICAL FIBER AXIS ALIGNING POSITION 失效
公开(公告)号：JPS56126818A
公开(公告)日：1981-10-05
申请号：JP3133580
申请日：1980-03-12
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MIYAUCHI MITSURU , KOKAYU MIKIO , KAMIKURA YASUHIRO , YANAGAWA HISAHARU
IPC分类号： G02B6/24 , G02B6/38
摘要： PURPOSE:To finely adjust an axis aligning position by utilizing a transformation of the electrostrictive element. CONSTITUTION:An opening part 3 of the cavity 4 which is connected to the vacuum device is provided on the angle where a vertical contact branch part 2a of the L-form optical fiber supporting table 1, and a horizontal contact branch part 2b are crossing, so that the optical fiber F to be coupled is attracted and kept contacting. Electrostrictive elements 8a, 8b are fixed to 5a and 5b as a cantilever system, respectively, as fine adjustment elements of the fiber axis. Since 8a and 8b are curved to the left and in the upper direction, respectively, by applying the voltage, it is possible to adjust an axis aligning position by finely moving a coupling end of the optical fiber F.

4. 发明专利

JPS58134603A TERMINAL PART OF AIR-GAP TYPE OPTICAL FIBER CORE 失效
公开(公告)号：JPS58134603A
公开(公告)日：1983-08-10
申请号：JP1684582
申请日：1982-02-04
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MATSUMOTO MICHITO , MIYAUCHI MITSURU , OBARA HIROICHI , TAKAHASHI TOMOKI , SEKIGUCHI HIROHISA , TATEGAMI SHIGERU
IPC分类号： G02B6/02 , G02B6/38
摘要： PURPOSE:To apply ordinal terminal processing technique as it is by adherently applying reinforcing coat at least to a part of an optical fiber strand exposed from a secondary coat. CONSTITUTION:The periphery of the optical fiber strand 1 is coated with a pipe like secondary coat 2 consisting of nylon or the like through an air gap. In said optical fiber core 3, the prescribed length of optical fiber core strand 1 is exposed from the secondary coat 2 at the terminal part and the reinforcing coat 4 is adherently applied to the periphery of the optical fiber strand 1 under a condition that the optical fiber strand 1 is still exposed at its leading end. Molded nylon or the like is used as the reinforcing coat 4 for example. Thus the ordinal terminal processing technique is applied as it is.

5. 发明专利

JPS58111011A FUSION CONNECTING METHOD FOR OPTICAL FIBER 失效
公开(公告)号：JPS58111011A
公开(公告)日：1983-07-01
申请号：JP21175581
申请日：1981-12-24
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MIYAUCHI MITSURU , HAIBARA TADASHI , NISHIMOTO MASAYUKI , NISHIMURA MASAO , TATEGAMI SHIGERU
IPC分类号： G02B6/24 , G02B6/255
摘要： PURPOSE:To eliminate factors of deterioration in strength at a connection part and to improve mechanical strength by forming films of silicone oil at outer circumference of optical fibers before the end surfaces of the optical fibers are fusion-connected mutually, and then making the mutual fusion connection between the end surfaces. CONSTITUTION:Coatings 2A and 2B are removed from the end parts of a couple of coated optical fibers 3A and 3B to expose optical fibers 3A and 3B. Then, the remaining coating materials of the removed coatings 2A and 2B are wiped off from the exposed parts of the fibers 3A and 3B by using an organic solvent such as acetone. Then, composite paper impregnated with silicone oil is used to wipe the fibers 3A and 3B from which the coatings 2A and 2B are removed softly, thus forming films of silicone oil. The tips of the fibers 3A and 3B are cut nearly at right angles to obtain adequate butt end surfaces 4A and 4B. Those end surfaces 4A and 4B are butted against each other and the fibers 3A and 3B are fusion-connected by arc discharge by discharging electrodes 5M and 5N, thus improving the mechanical strength of the connection part.

6. 发明专利

JPS5849907A FIXING METHOD FOR OPTICAL FIBER CONNECTION PART 失效
公开(公告)号：JPS5849907A
公开(公告)日：1983-03-24
申请号：JP14745481
申请日：1981-09-18
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MIYAUCHI MITSURU , TAKAGI SEISHI
IPC分类号： G02B6/24 , G02B6/38 , G02B6/44
摘要： PURPOSE:To simplify the handling for fixing of a connection part, by using a magnetic material as one of a device body and the connection part between optical fibers and using a magnetized material as the other. CONSTITUTION:A reinforcing member 6 for a connection part 4 between optical fibers 2A and 2B is formed with a base plate 7 and a press cover 8 and consists of a magnetized material. Ends of coatings of optical fibers 2A and 2B are fitted from slits 9A and 9B up to grooves 11A and 11B, and end parts 3A and 3B of optical fibers are fitted into a groove 10 and are detained by the press cover 8, thus attaching the reinforcing member 6. A device body 12 consists of a box- shaped main body 13 and a cover body 14, and they are magnetic together. Thus, the connection part is fixed to a desired position of the device body to simplify the handling for fixing of the connection part.

7. 发明专利

JPS57200009A CONNECTING METHOD FOR OPTICAL FIBER 失效
公开(公告)号：JPS57200009A
公开(公告)日：1982-12-08
申请号：JP8535181
申请日：1981-06-03
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MIYAUCHI MITSURU , MATSUMOTO MICHITO , NISHIMURA MASAO , NISHIMOTO MASAYUKI , TATEGAMI SHIGERU , KOKAYU MIKIO
IPC分类号： G02B6/24 , G02B6/38
摘要： PURPOSE:To eliminate formation strain and to avoid loss in a low-temperature area by removing at least external layer parts of sheath layers at the external circumferences of the end parts of a couple of sheathed optical fiber ends to be connected mutually, and thermally welding the terminals of both the sheathed optical fibers. CONSTITUTION:Sheath internal layer parts 3A and 2B and sheath extenal layer parts 4A and 4B are removed by desired lengths from the external circumferences of the end parts of sheathed optical fibers 1A and 1B, thus obtaining sheath-removed parts 5A and 5B. Further, the terminal sides of the sheath-removed parts 5A and 5B are cut vertically to form butt end surfaces 6A and 6B. The butt end surfaces 6A and 6B are butted against each other and then heat- sealed by the discharge heating, etc., of a couple of discharging electrodes 7M and 7N. The connection part is set in a forming device 8 and a connecting sheath layer 9 of thermoplastic resin such as nylon is formed around the external circumference of the connection part.

8. 发明专利

JPS57171308A CONNECTING METHOD OF OPTICAL CABLE 失效
公开(公告)号：JPS57171308A
公开(公告)日：1982-10-21
申请号：JP5654981
申请日：1981-04-15
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MIYAUCHI MITSURU , YASHIRO TAKAMASA , OBARA HIROICHI , ISHIBASHI TOKIO , TANABE ETSUO
IPC分类号： G02B6/24 , G02B6/44
摘要： PURPOSE:To simplify the formation of a loop and to eliminate the twisting of a core wire in spite of the loop formation to reduce the transmission loss of an optical cable, by forming the extra length of the core wire of the optical fiber into a loop before connecting the core wire. CONSTITUTION:Core wires 2A and 2B of optical cables are cut to a prescribed length respectively, and extra lengths 4A and 4B are turned in the prescribed times into a loop. This loop can be formed freely since the end parts of the lengths 4A and 4B are free. Thus the wires 2A and 2B have no twisting. The tips of the wires 2A and 2B are connected together by means of a connector 5. The loops of the lengths 4A and 4B are set together to form a larger loop 4C. The loop 4C is stored and fixed in a protecting case.

9. 发明专利

JPS57154212A SUPPORTING METHOD OF OPTICAL FIBER CONNECTING PART 失效
公开(公告)号：JPS57154212A
公开(公告)日：1982-09-24
申请号：JP3902181
申请日：1981-03-18
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MIYAUCHI MITSURU , OBARA HIROICHI , ISHIBASHI TOKIO , NAKASHIMA JIYUN
IPC分类号： G02B6/24 , G02B6/44
摘要： PURPOSE:To execute connecting and storing work efficiently and economically by use of a supporting member with a simple structure, by distributing and placing plural pairs of optical fiber connecting parts on the surface of the supporting member, and also supporting the surplus length part along the surface of the supporting member. CONSTITUTION:Optical fibers 3a1, 3a2,..., 3b1, 3b2,... drawn out from each sheath 2A, 2B end of optical cables 1A, 1B are relatively connected by means of sleeve connection, etc. Cylindrical supporting members 71-73 consisting of split pieces 6, 6' which can be disassembled and coupled freely are placed between the sheaths 2A, 2B, and surplus length parts 4a1, 4b1...4a3, 4b3 and each connecting part 51-53 are placed along the outside circumferene of the supporting members 71-73 and are fixed with an adhesive tape, an adhesive agent, etc. In this way, the connecting and storing work is executed efficiently and economically by use of the supporting member of a simple structure.

10. 发明专利

JPS5612607A METHOD OF HOLDING CONNECTED PART AND EXTRA LENGTH PART OF OPTICAL FIBER 失效
公开(公告)号：JPS5612607A
公开(公告)日：1981-02-07
申请号：JP8769579
申请日：1979-07-11
申请人： NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD
发明人： MIYAUCHI MITSURU , KOBAYASHI KENZOU , MOGAMI YASUSHI , NAKASHIMA JIYUN , KAMIKURA YASUHIRO
IPC分类号： G02B6/24 , G02B6/00 , G02B6/36 , G02B6/44
摘要： PURPOSE:To prevent the increased size of optical cable connecting structure and easily obtain the identifiableness of cores by ingeniously holding the connected parts and extra length parts of optical fibers by making use of the outside circumference of a cylindrical body. CONSTITUTION:At the time of looping the plural optical fibers a1-a6 and b1-b6 having extra length parts l1-l6 and m1-m6 and being connected to each other by connected parts s1-s6, these are formed by being divided to plural sets of loop parts L1-L6; moreover, at the time of affixially connecting the respective loop parts L1-L6 to the outside circumference of a cylindrical body 1, the respective loop parts L1-L6 are shifted at every specified interval to the circumferential direction and the respective connected parts s1-s6 are alighed. Consequently, the extra length parts formed into the specified loops of not producing any microbends may be accommodated efficiently on the circumference of the cylindrical body 1 without any undue stress and in conformity with the cable-connecting sleeve; in addition, the identification of the respective optical fibers a1-a6 and b1-b6 may be made distinctly by the segmented loop parts L1-L6 and the aligned connected parts s1-s6.

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