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1. 发明专利

JPS6070402A PRODUCTION OF OPTICAL FIBER FOR LASER GUIDE 失效
公开(公告)号：JPS6070402A
公开(公告)日：1985-04-22
申请号：JP17898183
申请日：1983-09-27
申请人： TOSHIBA KK , SHOWA ELECTRIC WIRE & CABLE CO
发明人： ISHIKAWA KEN , YAGI KENJI , IWAMOTO TOSHIO
IPC分类号： C03B37/15 , C03B37/14 , G02B6/00 , G02B6/42
摘要： PURPOSE:To form integrally an expanded diameter part having a prescribed outside diameter at one end of an optical fiber in order to form an incident end face having a desired area by repeating the process for heating a part of the optical fiber and exerting compressive force to the longitudinal direction of the fiber. CONSTITUTION:The circumferential surface of an exposed part 1a is heated while an optical fiber 1 is rotated. The exposed part 1a is heated in this process until the core part 2 and clad layers 3, 4 of said part are softened while the temp. increase in a protective plastic layer 5 part near the exposed part 1a is prevented by cooling the layer 5 part or disposing a light shielding plate between the layer 5 and the part 1a. Compressive force is then exerted to the softened part 1a in the longitudinal direction of the fiber 1. A cylindrical forming member 6 is disposed coaxially on the circumferential surface of the part 1a in this case and therefore the heated part 1a is expanded and regulated to the inside diameter D2 of the member 6. The expanded diameter part 7 having a prescribed diameter D2 is thus formed and the diameter D1 of a core 2 is expanded to D3 in the part 7. The part 7 is cut at a line A-A and the cut surface is polished by which an incident face 8 is formed.

2. 发明专利

JPS60232507A MANUFACTURE OF IMAGE GUIDE 失效
公开(公告)号：JPS60232507A
公开(公告)日：1985-11-19
申请号：JP8814684
申请日：1984-05-01
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： IWAMOTO TOSHIO , GOTOU ISAMU
IPC分类号： C03B37/012 , C03B37/027 , G02B6/04 , G02B6/06
摘要： PURPOSE:To unite a clad without any deformation of respective element wires by heating such an element wire fiber that the softening point of the core is at least 50 deg.C higher than that of the clad at temperatures which are lower than the softening point of the core and higher than the softening point of the clad in a collapse process. CONSTITUTION:Soot synthesized by hydrolysis is blown from a burner to a core rod and the burner is moved forth and back in axial directions of the core rod to form a preform rod, which is spun to manufacture an element wire fiber. Numbers of element wire fibers are stored in a quartz pipe 1, which is then arranged in a heating furnace 2; and the container is evacuated while the pipe is heated at a temperature of 1,530 deg.C by a heater 3 and collapsed to manufacture an image guide blank material. For example, the softening point of the quartz core is 1,580 deg.C and the softening point of the clad is 1,525 deg.C; and clads of respective element wire fibers when heated at 1,530 deg.C in the collapse process soften and deform to unite themselves, but the core of each element wire fiber does not soften and, therefore, never deforms.

3. 发明专利

JPS6054935A MANUFACTURE OF PREFORM ROD FOR OPTICAL FIBER 失效
公开(公告)号：JPS6054935A
公开(公告)日：1985-03-29
申请号：JP16229883
申请日：1983-09-02
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： IWAMOTO TOSHIO
IPC分类号： G02B6/00 , C03B37/012 , C03B37/014 , C03B37/018 , C03C13/04 , G02B6/02
摘要： PURPOSE:To manufacture a perform rod having few cracks and capable of giving an optical fiber having high strength, by covering the circumference of a clad layer with a quartz glass layer having lower expansion coefficient than that of the clad. CONSTITUTION:A quartz glass rod forming a core is fixed to a glass lathe. The glass rod is rotated, and at the same time, an SiCl4 gas containing F is supplied together with oxygen gas and hydrogen gas to the travelling burner, and the soot of F-containing SiO2 is blasted through the burner to the rod. The travelling burner is reciprocated along the axial direction of the rod, and the SiO2 layer is grown gradually on the rod along the radial direction as a clad containing F. After the growth of the F-containing SiO2 clad to the rod by outer deposition process, the travelling burner is supplied only with oxygen gas and hydrogen gas, and at the same time, the burner is moved to effect the flame polishing of the surface of the clad at 2,000 deg.C. The objective perform rod is manufactured by this process.

4. 发明专利

JPS605041A QUARTZ-BASED OPTICAL FIBER PREFORM 失效
公开(公告)号：JPS605041A
公开(公告)日：1985-01-11
申请号：JP11238083
申请日：1983-06-22
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： IWAMOTO TOSHIO
IPC分类号： C03C3/06 , C03C13/04 , G02B6/00 , G02B6/02
摘要： PURPOSE:To obtain the titled preform having the thermal expansion coefficient of the core close to that of the clad, by applying a quartz glass clad to the outer circumference of a quartz glass core doped with titanium oxide and an oxide to increase the thermal expansion coefficient. CONSTITUTION:A quartz glass is doped with an oxide to increase the refractive index (e.g. germanium oxide, phosphorus pentoxide, etc.), and further with titanium oxide which is effective to increase the refractive index and decrease the thermal expansion coefficient increased by the addition of the first dopant. The obtained core material is covered with a clad made of quartz glass to obtain the objective quartz-based optical fiber preform. Since the thermal expansion coefficient of the core is close to that of the clad, the obtained preform has excellent thermal shock resistance.

5. 发明专利

JPS605035A MANUFACTURE OF OPTICAL FIBER PREFORM ROD 失效
公开(公告)号：JPS605035A
公开(公告)日：1985-01-11
申请号：JP11038883
申请日：1983-06-20
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： IWAMOTO TOSHIO , GOTOU ISATAKA
IPC分类号： C03B37/018 , C03B37/014 , G02B6/00
摘要： PURPOSE:To facilitate the control of the refractive index distribution in the soot for an optical fiber preform rod, by depositing a soot composed mainly of quartz to the outer circumference of a core glass composed mainly of quartz, and vitrifying the soot in an gaseous atmosphere containing a dopant. CONSTITUTION:The soot 2 composed mainly of quartz (e.g. deposition of SiO2 powder obtained by the oxidation or hydrolysis reaction, etc. of the halide, hydroxide, or organic compound of Si) is deposited to the outer circumference of the core glass 1 composed mainly of quartz, and the obtained preform rod is inserted into a vitrification furnace 4, and vitrified in a gaseous atmosphere containing a dopant (e.g. an atmosphere of an F-containing gas such as CF4, etc.) to obtain an optical fiber preform rod having the glass layer 5. Since the control of the refractive index of the soot formed to the circumference of the core glass is carried out not at the soot-forming stage but at the vitrification stage, the control in the soot-formation stage can be simplified, and the influence of the dissipated dopant in the vitrification stage can be made negligible.

6. 发明专利

JPS59156928A Manufacture of preform for optical fiber 失效
标题翻译：光纤预制件的制造
公开(公告)号：JPS59156928A
公开(公告)日：1984-09-06
申请号：JP2797283
申请日：1983-02-22
申请人： Showa Electric Wire & Cable Co Ltd
发明人： SUGIYAMA NORIO , IWAMOTO TOSHIO
IPC分类号： C03B20/00 , C03B37/012 , G02B6/00
CPC分类号： C03B37/01211
摘要： PURPOSE:To obtain the optical fiber having a clad with specified thickness by inserting a quartz core rod small in diameter into a quartz tube having a clad layer, collapsing to form a preform, and forming the preform in small size. CONSTITUTION:A quarts tube 1 having 20mm. outside diameter and 1.5mm. wall thickness, gor instance, is laid on a glass lathe, and rotated I . Gaseous SiCl4 and BCl3 with gaseous O2 are introduced thereto, and the outer wall of the tube 1 is heated continuously and locally by moving axially an oxyhydrogen burner 2. Soot consisting of oxides such as SiO2, B2O3 etc. are deposited on the circumferential surface of the inner wall of the tube 1 and vetrified to form a clad layer such as 1.5mm. wall thickness. Then a quartz core rod 4 having 10mm. diameter, for example, is inserted into the quarts tube 1, and heated at a high temp. by the burner 2 to collapse the clearance between the clad layer 3 and the quartz core rod 4. As a result, a preform 5 in rod form having 17.4mm. cutside diameter, for example, is formed. Finally, the outer circumferential surface is machined, and the preform having such as 15.6mm. outside diameter is formed. The optical fiber having 125mu outside diameter, for example, is manufactured by spinning the obtained preform. The optical fiber having 80mu core diameter and a clad having 15mu thickness, for instance, can be obtained.
摘要翻译：目的：通过将具有小直径的石英芯棒插入具有包覆层的石英管中以获得具有特定厚度的包层的光纤，塌缩以形成预成型件，并且形成小型的预制件。构成：具有20mm的石英管1。外径1.5mm。壁厚，gor实例，放在玻璃车床上，旋转I。将气态SiCl4和BCl3与气态O 2引入其中，并且通过轴向移动氢氧燃烧器2连续地和局部地加热管1的外壁。由氧化物如SiO 2，B 2 O 3等组成的烟灰沉积在管1的内壁并且蒸发以形成诸如1.5mm的包覆层。室壁厚度。然后是具有10mm的石英芯棒4。直径例如插入石英管1中，并在高温下加热。通过燃烧器2折叠包覆层3和石英芯棒4之间的间隙。结果，棒状的预成型件5具有17.4mm。例如形成切口直径。最后，加工外圆周表面，预制件具有15.6mm。形成外径。例如，外径为125μm的光纤通过将得到的预成型体进行纺丝来制造。例如，可以获得具有80μm芯直径的光纤和具有15μm厚度的包层。

7. 发明专利

JPS5841734A UNIT FOR MAKING PREFORM ROD OF OPTICAL FIBER 失效
公开(公告)号：JPS5841734A
公开(公告)日：1983-03-11
申请号：JP13653681
申请日：1981-08-31
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： IWAMOTO TOSHIO , SASANO NAONARI
IPC分类号： C03B37/018 , G02B6/00
摘要： PURPOSE:In the production process for preform by the CVD method, the glass power accumulated in the quartz tube is scraped out with a reciprocating rod to prevent the quartz tube from being clogged, facilitate the adjustment of the inner pressure and permit the accurate control of outer diameter. CONSTITUTION:A glass tube 11 is set to the glass lathe and a gas of glass raw materials is made to flow from side A to side B, then the gas is exhausted through the glass powder collecting box 13 out of the valve 25 in the duct 24. The quartz tube is heated outside with an oxyhydrogen flame burner 12 reciprocating in the lengthwise direction of the tube and glass films are formed inside the quartz tube 11. As the glass films are formed, a glass powder 28 is accumulated near the end of side B and scraped out with a rod 16 equipped with a rack 20 by the synchronized operation of the linear step cylinder 19 on the bracket 21 with the reciprocation of the oxyhydrogen burner 12. The scraping rod 16 is equipped with a screw 18 on the top end and the glass powder is scraped out into the box 13.

8. 发明专利

JPS59207846A Manufacture of preform for polarization keeping fiber 失效
标题翻译：用于偏振保持光纤的预制件的制造
公开(公告)号：JPS59207846A
公开(公告)日：1984-11-26
申请号：JP8214783
申请日：1983-05-11
申请人： Showa Electric Wire & Cable Co Ltd
发明人： IWAMOTO TOSHIO
IPC分类号： C03B37/018 , C03B19/14 , C03B37/014 , G02B5/30
CPC分类号： C03B37/0142 , C03B37/01413 , C03B2201/10 , C03B2201/31 , C03B2203/30 , C03B2207/50 , C03B2207/60 , C03B2207/70
摘要： PURPOSE:To improve the productivity of a polarization keeping fiber, easily, by increasing and decreasing the flow rate of the dopant gas, vapor of core material, or vapor of clad material supplied to a burner at every turn of the target by 90 deg.. CONSTITUTION:The multiplex tube burner 5 is supplied with SiCl4 gas and GeCl4 gas from the raw material supplying system 6, and at the same time, with a combustible gas and O2 gas from the flame gas supplying system 7 to synthesize the soot 10 by the hydrolysis reaction in the flame. The soot is blasted and deposited to the lower end of the quartz rod 1 by the burner 5. Since the quartz rod 1 is pulled up while being rotated at a constant speed with the motor 2 controlled by the controller 4, the core part is formed to the end of the quartz rod 1 along its axis. Separately, SiCl4 gas, BBr3 gas, a combustible gas, and O2 gas are supplied to another multiplex tube burner 8 to synthesize the soot 11 by the hydrolysis reaction in the flame, and the soot is blasted with the burner 8 horizontally to the lower end of the quartz rod 1 to form the clad part deposited around the core part. The objective preform can be manufactured by this procedure.
摘要翻译：目的：为了提高极化保持纤维的生产率，通过增加和减少掺杂剂气体的流量，芯材料的蒸气或在目标的每一匝提供给燃烧器的包层材料的蒸气90度。构成：多路管燃烧器5从原料供给系统6供给SiCl 4气体和GeCl 4气体，同时从来自火焰气体供给系统7的可燃性气体和O 2气体供给合成烟尘10，火焰中的水解反应。烟灰被燃烧器5喷砂沉积到石英棒1的下端。由于在电机2由控制器4控制的同时以恒定的速度旋转石英棒1，所以形成芯部沿着其轴线到石英棒1的端部。单独地，将SiCl 4气体，BBr 3气体，可燃性气体和O 2气体供给到另一多路管燃烧器8，以通过火焰中的水解反应合成烟灰11，并且利用燃烧器8将煤烟水平地喷射到下端的石英棒1以形成围绕芯部分沉积的包层部分。可以通过该程序制造目标预制件。

9. 发明专利

JPS59156929A Manufacture of preform for fiber retaining polarizing surface 失效
标题翻译：用于光纤保持极化表面的预制件的制造
公开(公告)号：JPS59156929A
公开(公告)日：1984-09-06
申请号：JP2797383
申请日：1983-02-22
申请人： Showa Electric Wire & Cable Co Ltd
发明人： IWAMOTO TOSHIO
IPC分类号： C03B20/00 , C03B37/012 , G02B6/024
CPC分类号： C03B37/01228 , C03B37/01217 , C03B37/01234 , C03B37/01248 , C03B2201/31 , C03B2203/30
摘要： PURPOSE:To manufacture easily and economically the titled side tunnel type preform by inserting a rod contg. a core part into a quartz tube, leaving clearance on both sides, and heating the circumferential surface while exerting gas pressure to the clearance part. CONSTITUTION:Both sides of a rod 3, used for a single mode fiber, having a circular cross section and consisting of a core part 1 contg. a dopant such as Ge with a high refractive index and a clad part 2 consisting of SiO2, are mechanically ground along the axial direction of the rod 3. And the rod having a clad part 2' having an almost oblong cross section is obtained. The rod 3 is inserted into a quartz tube 4, and clearance parts 5 and 5 are formed. Then one end of the quartz tube 4 is sealed, and an inert gas such as Ar is sent into the clearance parts 5 and 5 from the other end to exert specified pressure to the clearance parts 5 and 5. At the same time, the circumferential surface of the quartz tube 4 is heated, and the quartz tube 4 and the rod 3 are softened and united to a body. In this way, the preform 6 having the clearance parts 5 and 5 is formed.
摘要翻译：目的：为了方便和经济地制造标准的侧面隧道式预成型件，通过插入杆接头石英管的核心部分，在两侧留下间隙，并且在向间隙部分施加气体压力的同时加热圆周表面。构成：用于单模光纤的杆3的两侧具有圆形横截面并由芯部1包围。具有高折射率的Ge等掺杂剂和由SiO 2构成的包层部2被沿着棒3的轴向机械地研磨，得到具有大致椭圆截面的包层部2'的棒。杆3插入石英管4中，形成间隙部5和5。然后石英管4的一端被密封，惰性气体如Ar从另一端被送入间隙部分5和5，以向间隙部分5和5施加规定的压力。同时，周向石英管4的表面被加热，并且石英管4和杆3软化并结合到主体。以这种方式形成具有间隙部分5和5的预成型件6。

10. 发明专利

JPS59154329A Temperature sensor 失效
标题翻译：温度感应器
公开(公告)号：JPS59154329A
公开(公告)日：1984-09-03
申请号：JP2888183
申请日：1983-02-23
申请人： Showa Electric Wire & Cable Co Ltd
发明人： KOBATA NOBUO , SASANO NAONARI , IWAMOTO TOSHIO
IPC分类号： G01K11/12 , G01K5/48 , G01K11/32
CPC分类号： G01K11/32
摘要： PURPOSE:To detect temp. changes of wide range by providing an optical fiber having a detection part generating a light bending loss and a substance which is sticking to the circumferential surface of the above-mentioned detecting part and changes a boundary condition between the detecting part and the substance in accordance with the temp. changes. CONSTITUTION:The temp. sensor is provided with an optical fiber 1 consisting of a quartz rod which is bent in a U shape. The optical fiber 1 forms a detecting part 2 of which bent part generates a light bending loss. As the detecting part 2 is placed in silicone oil 6 stored in a vessel 9, the circumferential surface is coated with the silicone oil 6. With such an arrangement, when the boundary condition between the detecting part 2 and the silicone oil 6 is changed, the light B5 emitted from a light emitting element 7 enters the optial fiber 1, passes through the detecting part 2, and is received by a photodetector 8. In this way, the temp. changes of wide range can be detected.
摘要翻译：目的：检测温度通过提供具有产生光弯曲损失的检测部分的光纤和粘附到上述检测部分的圆周表面上的物质并根据检测部分和物质之间的边界条件改变来实现宽范围的变化温度变化。规定：传感器设置有由以U形弯曲的石英棒组成的光纤1。光纤1形成弯曲部产生光弯曲损失的检测部2。当检测部分2放置在存储在容器9中的硅油6中时，圆周表面涂覆有硅油6.通过这种布置，当检测部分2和硅油6之间的边界条件改变时，从发光元件7发出的光B5进入光纤1，通过检测部2，由光电检测器8接收。可以检测到宽范围的变化。

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