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1. 发明专利

JPS6161031A Measuring method of dimension of optical fiber by video analyzer 失效
标题翻译：通过视频分析仪测量光纤尺寸的测量方法
公开(公告)号：JPS6161031A
公开(公告)日：1986-03-28
申请号：JP18425784
申请日：1984-09-03
申请人： Hitachi Cable Ltd
发明人： SATO TOMOJI , TAKUMA TAKEYOSHI , KAJIOKA HIROSHI
IPC分类号： G01B11/08 , G01M11/00 , G02B6/00
CPC分类号： G01M11/33 , G01B11/08
摘要： PURPOSE:To measure the dimensions of an optical fiber practically by projecting the near field pattern of the end surface of the optical fiber through a television camera and inputting data on it except a clad deficient part. CONSTITUTION:When the dimensions of the optical fiber 3 are measured, light 5 is inputted to the optical fiber 3 through a lens 6, a lens 6a is provided at the other terminal, and its image is picked up the television camera 7 and displayed on a monitor cathode-ray tube 8. Then, a computer 9 is provided to calculate the dimensions. At this time, if the clad 3 of the optical fiber 3 has a deficiency 4, it exerts evil influence upon detection data. For the purpose, deficiencies of the clad within a predetermined range are excluded on the monitor screen during the processing of the computer 9. Therefore, the influence of deficiencies of the end surface of the optical fiber is eliminated and the dimensions are measured practically.
摘要翻译：目的：通过电视摄像机投射光纤端面的近场图案，并输入数据，实际上可以测量光纤的尺寸，但不包括缺陷部分。结构：当测量光纤3的尺寸时，光5通过透镜6输入到光纤3，在另一个端子处设置透镜6a，并且其图像被拾取电视摄像机7并显示在监视器阴极射线管8.然后，提供计算机9以计算尺寸。此时，如果光纤3的包层3具有缺陷4，则对检测数据施加恶劣的影响。为此，在计算机9的处理期间，在监视器屏幕上不包括在预定范围内的包层的缺陷。因此，消除了光纤端面的缺陷的影响，并且实际上测量了尺寸。

2. 发明专利

JPS5949511A Connection method of optical fiber for retaining plane of polarization 失效
标题翻译：用于保持极化平面的光纤的连接方法
公开(公告)号：JPS5949511A
公开(公告)日：1984-03-22
申请号：JP16019482
申请日：1982-09-14
申请人： Hitachi Cable Ltd
发明人： KAJIOKA HIROSHI
IPC分类号： G02B6/24 , G02B6/38
CPC分类号： G02B6/3803
摘要： PURPOSE:To suppress the deterioration of a quenching ratio in the stage of connecting optical fibers, by enabling the measurement of the stripe pattern of scattered light and the monitoring of the intensity of output light. CONSTITUTION:The connection of optical fibers (SP) 5, 7 for retaining plane of polarization is accomplished by rotating the SP fiber 7 while observing the intensity of the scattered light shown in the figure from a y direction and connecting the fibers where the intensity of the scattered light attains the same coupling length as shown by a broken line. Then the double refractive index characteristics of the SP fibers are automatically matched, and the connection at the min. quenching ratio is executed.
摘要翻译：目的：通过测量散射光的条纹图案和监视输出光的强度，抑制连接光纤的阶段的淬火比的劣化。构成：用于保持极化保持平面的光纤（SP）5,7的连接是通过旋转SP光纤7来实现的，同时从ay方向观察图中所示的散射光的强度，并连接光纤的强度散射光达到与虚线所示相同的耦合长度。然后SP纤维的双重折射率特性自动匹配，最小连接。执行淬火比。

3. 发明专利

JPS5940273A Electric field meter using polarization surface preserving optical fiber 失效
标题翻译：使用偏光表面保护光纤的电场仪
公开(公告)号：JPS5940273A
公开(公告)日：1984-03-05
申请号：JP15103682
申请日：1982-08-31
申请人： Hitachi Cable Ltd
发明人： NAKAI HISANORI , IIZUKA TOSHIO , UETSUKA NAOTO , TAKUMA ISAYOSHI , KAJIOKA HIROSHI
IPC分类号： G01R15/24 , G01R29/08 , G01R29/12
CPC分类号： G01R29/12 , G01R29/0885
摘要： PURPOSE:To make it possible to measure an applied electric field with high accuracy, by calculating a phase change amount by using a polarization surface preserving optical fiber as an optical fiber. CONSTITUTION:Light emitted from a light source 1 is linearily polarized by a polarization plate 2 to be connected to the optical axis of a polarization surface preserving optical fiber by lambda/2 plate 3. The emitted linearily polarized light is passed through an electro-optical element 5 wherein said emitted light is inclined about 45 deg. with respect to the light axis to be projected into a wave dividing polarizing beam splitter 6 of which the optical axis is aligned with that of the element. Two polarization surface preserving optical fiber 4, 4' are respectively aligned in the optical axes thereof and, when oval polarized light is incident to the splitter 6, the components of each axes are respectively transmitted to be again synthesized by a synthesizing polarizing beam splitter 7 and the obtained oval polarized light is received by a light receiving part 8. By analyzing this light, a phase change amount is calculated and an applied electric field is calculated therefrom.
摘要翻译：目的：通过使用偏光面保持光纤作为光纤，通过计算相位变化量，可以高精度地测量施加的电场。构成：从光源1发射的光被偏振板2线性地偏振，以通过λ/ 2板3连接到偏振面保持光纤的光轴。发射的线偏振光通过电光元件5，其中所述发射的光倾斜约45度。相对于要投影到其中光轴与元件的光轴对准的波分光偏振分束器6的光轴。两个偏振面保留光纤4,4'分别对准在其光轴上，并且当椭圆偏振光入射到分光器6时，各轴的分量被分别透射以再次由合成偏振分束器7合成并且所获得的椭圆偏振光被光接收部分8接收。通过分析该光，计算相变量并从其计算施加的电场。

4. 发明专利

JPS5940202A Strain gage using optical fiber for preserving plane of polarization 失效
标题翻译：应变光栅使用光纤保护极化平面
公开(公告)号：JPS5940202A
公开(公告)日：1984-03-05
申请号：JP15103582
申请日：1982-08-31
申请人： Hitachi Cable Ltd
发明人： NAKAI HISANORI , IIZUKA TOSHIO , UETSUKA NAOTO , TAKUMA ISAYOSHI , KAJIOKA HIROSHI
IPC分类号： G01B11/00 , G01B11/16
CPC分类号： G01B11/18
摘要： PURPOSE:To obtain a highly accurate, stable strain gage, by which phase variation caused by the application of strain by using an optical fiber for preserving a plane of polarization is measured. CONSTITUTION:Light emitted from a light source 1 is inputted to an optical fiber 5 for preserving a plane of polarization used for measuring and to an optical fiber 5' for preserving a plane of polarization used as a reference through a polarizing plate 2, a lambda/4 plate 3, and a polarizing beam splitter 4. The split beams of light are synthesized again by a synthetic polarization beam splitter 4'. When strain 7 is applied to a part of an elastic plate 6, the synthesized light from the polarization beam splitter 4' is converted into the elliptically polarized light from the linearly polarized light. The light is received by a light receiving device 8. The phase variation is detected by a phase variation detecting device 9, and the applied strain is obtained. In this way, a highly accurate, stable strain gage can be obtained.
摘要翻译：目的：为了获得高精度，稳定的应变计，测量通过使用光纤施加应变引起的相位变化，以保持偏振平面。构成：从光源1发射的光被输入到用于保持用于测量的偏振平面的光纤5和用于通过偏振板2保持用作基准的偏振平面的光纤5'，λ / 4板3和偏振光束分离器4.分束光由合成偏振分束器4'再次合成。当应变7施加到弹性板6的一部分时，来自偏振分束器4'的合成光被转换成来自线偏振光的椭圆偏振光。光由光接收装置8接收。相位变化由相位变化检测装置9检测，得到施加的应变。以这种方式，可以获得高精度，稳定的应变计。

5. 发明专利

JPS5939738A Production of optical fiber retaining plane of polarization for pressure sensor 失效
标题翻译：压力传感器极化光纤保持平面的生产
公开(公告)号：JPS5939738A
公开(公告)日：1984-03-05
申请号：JP14791982
申请日：1982-08-26
申请人： Hitachi Cable Ltd
发明人： NIIZAWA MASAHARU , TOKUNAGA TOSHIHIDE , KAJIOKA HIROSHI
IPC分类号： C03B37/012 , G01L11/00 , G02B6/00
CPC分类号： C03B37/01217 , C03B2203/30 , C03B2203/32
摘要： PURPOSE:To obtain easily an optical fiber retaining the plane of polarization for a pressure sensor by inserting a base material for said optical fiber together with base materials for connecting members having the same quality as the quality of the support in the outside circumferential part thereof into a base material for a sheath which has the same quality as the quality of the base material of the connecting members and is provided on the outside circumference of the base material for said optical fiber, and drawing simultaneously these materials. CONSTITUTION:A base material for an optical fiber retaining the plane of polarization and having an elliptical jacket construction is manufactured from a quartz tube as a starting material by an ordinary MCVD method, and said base material is inserted together with separately prepared quartz bars to be used as connecting members into a quartz tube which is a jacket and these materials are fused and fixed together to one body to provide the arrangement shown in the figure. The base material of the rod-in tube manufactured in such a way is drawn simultaneously by using a heating and drawing furnace, whereby the optical fiber retaining the plane of polarization for a pressure sensor provided with the jacket 6 so as to contact with the outside circumference of said optical fiber consisting of the core 1, clad 2, elliptical jacket 3 and support 4 via the connecting members 5 is obtd.
摘要翻译：目的：为了容易地获得保持压力传感器的偏振平面的光纤，通过将用于所述光纤的基材与用于与其外周部分中的支撑体的质量具有相同质量的连接构件的基材一起插入用于护套的基材，其具有与连接构件的基材质量相同的质量，并且设置在用于所述光纤的基材的外周上，并且同时绘制这些材料。构成：通过普通的MCVD法由作为原料的石英管制造保持偏振面的光纤并具有椭圆形外壳结构的基材，并且将所述基材与单独制备的石英棒一起插入用作连接构件成为外壳的石英管，并将这些材料熔合并固定在一体，以提供图中所示的布置。以这种方式制造的棒入管的基材通过使用加热和拉伸炉同时拉出，由此保持设置有外套6的压力传感器的偏振面的光纤与外部接触通过连接部件5，由芯1，包层2，椭圆形护套3和支撑体4构成的所述光纤的圆周是可以接受的。

6. 发明专利

JPS5938709A Connecting method of optical fiber for retaining plane of polarization 失效
标题翻译：用于保持极化平面的光纤的连接方法
公开(公告)号：JPS5938709A
公开(公告)日：1984-03-02
申请号：JP14943982
申请日：1982-08-27
申请人： Hitachi Cable Ltd
发明人： SATOU TOMOJI , KAJIOKA HIROSHI , SHIINA NORIBUMI
IPC分类号： G02B6/24 , G02B6/255 , G02B6/26 , G02B6/38
CPC分类号： G02B6/2551 , G02B6/3812
摘要： PURPOSE:To enable the connection to align the intrinsic polarization axes of optical fibers with high accuracy by providing a pair of polarization plates having orthogonally intersecting planes of polarization across the place where the ends of the optical fibers face to each other and regulating the rotation of the optical fibers while making macro-observation. CONSTITUTION:A pair of optical fibers 1a, 1b for retaining the plane of polarization are butted to each other in the cut ends having a plane shape. A pair of polarization plates 3a, 3b having orthogonally intersecting planes of polarization are provided above and below the butt parts thereof. The fibers 1a, 1b have the distortion of the slow axis in the long axis direction of the elliptical jacket and the distortion of the fast axis in the short axis direction and therefore said parts are observed in bright coloring. Since the elliptical jacket 12 and support 13 differ in refractive index, the light reflects irregularly on the outside of the jacket 12. The operator observes the jacket 12 which appears bold or thin with a microscope 5 and aligns both by rotating adapters 9 thereby matching the intrinsic polarization axes of a pair of the fibers 1a, 1b and connecting the same.
摘要翻译：目的：为了使连接能够通过提供一对具有正交相交的偏振平面的偏振板在光纤的端部相互面对的位置上以高精度对准光纤的本征极化轴，光纤同时进行宏观观察。构成：用于保持偏振面的一对光纤1a，1b在具有平面形状的切割端部彼此对接。具有正交相交平面的一对偏振板3a，3b设置在其对接部的上方和下方。纤维1a，1b具有椭圆形护套的长轴方向的慢轴和短轴方向的快轴的变形，因此，以明亮的着色观察所述部分。由于椭圆形护套12和支撑体13的折射率不同，所以光线不均匀地在护套12的外侧反射。操作者用显微镜5观察外壳12显示为粗体或薄片，并通过旋转的适配器9对准两者，从而匹配一对纤维1a，1b的固有极化轴并连接。

7. 发明专利

JPS5926938A Preparation of optical fiber preserving plane of polarization 失效
标题翻译：光纤保护极化平面的制备
公开(公告)号：JPS5926938A
公开(公告)日：1984-02-13
申请号：JP13252882
申请日：1982-07-29
申请人： Hitachi Cable Ltd
发明人： KAJIOKA HIROSHI , TOKUNAGA TOSHIHIDE
IPC分类号： C03B37/018 , G02B6/024
CPC分类号： C03B37/01861 , C03B37/018 , C03B2203/30
摘要： PURPOSE:To obtain the titled optical fiber useful for long wave band, by piling the first glass film which will become a jacket layer piled on the inner wall of a quartz tube in such a way that the thickness of the first glass film has a specific calculated value. CONSTITUTION:In a method to prepare the titled fiber by piling the first glass film which will become a jacket layer containing at least boron, having a refractive index approximately equal to that of a quartz tube, on the inner wall of the quartz tube, the second glass film which will become a clad layer harder than the first glass film, and the third glass film which will become a core layer having a higher refractive inder than the second glass film successively, by modified chemical vapor deposition, collapsing the inside with evacuating it to prepare an elliptic jacket type optical fiber reform preserving plane of polarization, followed by spinning it, the first glass film is piled in such a way that the thickness delta of it has a value shown by the formula when the diameter of the quartz tube is Di, the outer diameter of the preform is D, the outer diameter of the optical fiber after spinning is b, the ellipsis ratio of the elliptic jacket is epsilon, the radius of the core is a, a ratio of the clad thickness to the radius of the core is P, and a ratio of the minor axis of the elliptic jacket to the radius of the core is K.
摘要翻译：目的：为了获得可用于长波段的标题光纤，通过将第一玻璃膜堆积在石英管的内壁上而成为夹层的第一玻璃膜，使得第一玻璃膜的厚度具有特定的计算值。构成：在石英管的内壁上堆叠将成为至少含有硼的护套层的第一玻璃膜（具有与石英管的折射率大致相等的折射率）的方法中，将成为比第一玻璃膜更硬的包覆层的第二玻璃膜和相继成为具有比第二玻璃膜更高的折射率的芯层的第三玻璃膜，通过改进的化学气相沉积，将其内部抽真空准备椭圆形护套型光纤改性保持平面的偏振，然后旋转，第一玻璃膜以这样的方式堆叠，使得当第一玻璃膜的厚度δ值为石英管的直径时具有公式的值是Di，预制件的外径为D，纺丝后的光纤的外径为b，椭圆形护套的省略比为ε，芯的半径为，包层厚度与芯的半径的比为P，椭圆形护套的短轴与芯的半径的比为K.

8. 发明专利

JPS5918126A Manufacture of polarization maintaining optical fiber 失效
标题翻译：极化维护光纤的制造
公开(公告)号：JPS5918126A
公开(公告)日：1984-01-30
申请号：JP12621782
申请日：1982-07-20
申请人： Hitachi Cable Ltd
发明人： KAJIOKA HIROSHI , TOKUNAGA TOSHIHIDE , NIIZAWA MASAHARU
IPC分类号： C03B37/012 , C03B37/075 , G02B6/024
CPC分类号： C03B37/01248 , C03B37/01217 , C03B37/01225 , C03B2203/30
摘要： PURPOSE:To obtain the titled easily connectable optical fiber having completely circular clad, by forming a clad layer having controlled refractive index to the inner face of a quartz tube, inserting a quartz rod into the tube, solidifying the tube by heating while evacuating the tube from its one end, and drawing the product. CONSTITUTION:A clad layer 2 composed of B2O3 glass powder having controlled refractive index is deposited to the inner surface of the quartz tube 2 by chemical vapor-phase reaction, and a quartz core rod 1 made by VAD process is inserted to the center of the quartz tube 3. The tube 3 is evacuated from its one end to a pressure of 10-40mm.Hg, and at the same time, heated to solidify the tube. The product is then drawn to obtain a polarization maintaining optical fiber 8 composed of the core 5 derived from the quartz rod 1, the elliptic clad 6 derived from the clad layer 2, and the fiber support 7, etc. having completely circular cross-section and derived from the quartz tube 3. A preform may be inserted into the tube in place of the quartz rod 1, or the clad layer 2 may contain P, Ge, F, etc.
摘要翻译：目的：为了获得具有完全圆形包层的标题容易连接的光纤，通过在石英管的内表面上形成具有受控折射率的包覆层，将石英棒插入管中，同时通过加热固化管，同时抽空管从一端，画出产品。构成：通过化学气相反应将由受控折射率的B2O3玻璃粉末构成的包覆层2沉积在石英管2的内表面，并且通过VAD工艺制成的石英芯棒1插入到石英管3.管3从其一端排出至10-40mm.Hg的压力，同时加热固化管。然后将该产物拉伸以获得由源自石英棒1的芯体5，来自包覆层2的椭圆形包层6和具有完全圆形横截面的纤维支撑体7等构成的偏振维持光纤8 并衍生自石英管3.预制件可以插入管中而不是石英棒1，或者包层2可以包含P，Ge，F等。

9. 发明专利

JPS593029A Manufacture of preform for optical fiber retaining plane of polarization 失效
标题翻译：光学光纤保留平面的偏振片制作
公开(公告)号：JPS593029A
公开(公告)日：1984-01-09
申请号：JP10808282
申请日：1982-06-23
申请人： Hitachi Cable Ltd
发明人： UETSUKA NAOTO , KAJIOKA HIROSHI , TOKUNAGA TOSHIHIDE
IPC分类号： C03B37/018 , G02B6/00
CPC分类号： C03B37/01815 , C03B2203/30
摘要： PURPOSE:To manufacture a preform for an optical fiber retaining the plane of polarization with high reproducibility, by making the relative positional relation among four burners arranged around a base material for a preform constant and by providing a uniform temp. difference between flames from the adjacent burners. CONSTITUTION:Four burners 2, 3, 4, 5 are symmetrically arranged around a base material 1 for a preform formed by depositing glass films for a clad and a core on the inner wall of a glass pipe. The burners 2-5 are controlled so that flames from the opposite burners 2, 4 and 3, 5 are kept at the same temp. and that flames from the adjacent burners 2, 3, etc. have a uniform temp. difference. The material 1 is heated with the flames from the burners 2-5 while rotating the burners 2-5 without changing the relative positional relation among the material 1 and the burners 2-5 to obtain a preform for an optical fiber having an elliptical clad or core and retaining the plane of polarization.
摘要翻译：目的：为了制造具有高再现性的保持偏振面的光纤的预制件，通过使四个燃烧器之间的相对位置关系设置在用于预成型体的基材周围恒定并且通过提供均匀的温度。来自相邻燃烧器的火焰之间的区别。构成：四个燃烧器2,3,4,5围绕基材1对称地布置，用于通过在玻璃管的内壁上沉积用于包层和芯的玻璃膜而形成的预制件。控制燃烧器2-5，使来自相对燃烧器2,4和3,5的火焰保持在相同的温度。并且来自相邻燃烧器2,3等的火焰具有均匀的温度。区别。在不改变材料1和燃烧器2-5之间的相对位置关系的同时，使来自燃烧器2-5的火焰加热材料1，同时旋转燃烧器2-5，以获得具有椭圆形包层的光纤的预制件核心并保持极化平面。

10. 发明专利

JPS58203412A Branching device of polarization plane preserving optical fiber type 失效
标题翻译：保留光纤类型的偏振平面分支装置
公开(公告)号：JPS58203412A
公开(公告)日：1983-11-26
申请号：JP8617382
申请日：1982-05-21
申请人： Hitachi Cable Ltd
发明人： IIZUKA TOSHIO , KAJIOKA HIROSHI
IPC分类号： G02B6/024 , G02B6/34 , G02B27/28
CPC分类号： G02B6/2706 , G02B6/2766
摘要： PURPOSE:To change optionally a branching ratio, by rotating the fiber axis of the exit end of a polarization plane preserving optical fiber, or rotating an optical activity element to rotate the axis of polarization. CONSTITUTION:Though the light emitted from an incidence-side polarization plane preserving optical fiber 6 is branched by a polarizing beam splitter 7 after reducing to a parallel light through a collimator lens 2a, the light in the (y) (or x) direction orthogonal to the light polarized in the (x) (or y) direction is reflected when the light polarized in the (x) (or y) direction passes through the polarizing beam splitter 7. Consequently, if the fiber axis of the exit end of the polarization plane preserving optical fiber 6 is rotated at an angle theta to change the (x) direction to a direction x' when the light polarized in the (x) direction is propagated in the incidence-side polarization plane preserving optical fiber 6, the intensity of the light incident to an optical fiber 4 is changed; and the angle theta is changed to obtain an optional branching device. The branching ratio can be changed continuously by changing the angle theta continuously.
摘要翻译：目的：通过旋转保留光纤的偏振面的出口端的光纤轴，或旋转光学活动元件来旋转偏振轴，可选择地改变分支比。构成：尽管从保持光纤6的入射侧偏振面发射的光在通过准直透镜2a还原成平行光之后被偏振分束器7分支，但是（y）（或）x方向的光正交当（x）（或y）方向偏振的光通过偏振光束分离器7时，在（x）（或y）方向偏振的光被反射。因此，如果当在入射侧偏振面保持光纤6中传播在（x）方向上偏振的光传播时，偏振面保持光纤6以角度θ旋转以将（x）方向改变为方向x'，强度改变入射到光纤4的光; 并且角度θ被改变以获得可选的分支装置。可以通过连续改变角度θ来连续地改变分支比例。

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