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11.发明申请公开(公告)号：US20130128262A1
公开(公告)日：2013-05-23
申请号：US13698988
申请日：2011-05-18
申请人： Hiroshi Kajioka
发明人： Hiroshi Kajioka
CPC分类号： G01N21/55 , A61B5/14532 , A61B5/1455 , A61B5/14558 , G01N21/21 , G01N21/59 , G01N2201/08
摘要： There is provided an optical rotation measurement apparatus and a measuring system which are user-friendly, capable of measuring glucose concentration in drawn blood and living bodies with high accuracy in real time such that it is available for use at an actual medical site without depending on a reagent, and capable of measuring glucose concentration in a living body noninvasively with high accuracy, a new polarized light converting optical system that can be used for the measuring system, and an optical rotation measurement method using the optical system.The problems are resolved by inserting a non-reciprocal optical system sandwiching a specimen in an optical fiber ring interferometer, using input/output optical fibers of the non-reciprocal optical system, which are comprised of a large core diameter low NA single mode optical fiber, as an input/output part, connected via a mode-matching unit to a small core diameter and high NA polarization preserving fiber as a transmission part, and employing a defocused configuration without deploying the optical fiber ends at focal points of lenses.
摘要翻译： 提供了一种用户友好的光学旋转测量装置和测量系统，能够实时高精度地测量抽取的血液和活体中的葡萄糖浓度，使其可以在实际的医疗场所使用而不依赖于 能够高精度地测量生物体中的葡萄糖浓度的试剂，能够用于测定系统的新的偏振光转换光学系统和使用该光学系统的光学旋转测定方法。 通过将不可逆的光学系统插入到光纤环形干涉仪中，使用不可逆光学系统的输入/输出光纤将大型芯径的低NA单模光纤 作为输入/输出部分，通过模式匹配单元连接到小芯直径和高NA偏振保留光纤作为透射部分，并且采用散焦构造而不将光纤端部部署在透镜的焦点处。
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公开(公告)号：US4500168A
公开(公告)日：1985-02-19
申请号：US389265
申请日：1982-06-17
IPC分类号： C03B37/018 , G02B6/10 , G02B5/14
CPC分类号： G02B6/105 , C03B37/018 , C03B37/01861 , C03B2203/30
摘要： In the single polarization optical fiber of the present invention, an elliptical jacket is composed of SiO.sub.2 +P.sub.2 O.sub.5 +B.sub.2 O.sub.3, whereby increase in transmission loss at long wavelength band is prevented. In the process for fabricating single polarization optical fibers of the invention, a starting silica tube is subjected to pressure reduction with an amount of pressure reduction in response to concentration of dopants P.sub.2 O.sub.5 +B.sub.2 O.sub.3, whereby an ellipticity of the resulting elliptical jacket is made to be a pertinent value.
摘要翻译： 在本发明的单极化光纤中，椭圆形护套由SiO2 + P2O5 + B2O3组成，从而防止了长波长带的传输损失的增加。 在本发明的单极化光纤的制造方法中，起始二氧化硅管按照掺杂剂P2O5 + B2O3的浓度对减压量进行减压，由此使所得到的椭圆外套的椭圆率为 相关价值。
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13.发明授权
公开(公告)号：US5677973A
公开(公告)日：1997-10-14
申请号：US497374
申请日：1995-06-30
CPC分类号： G02B6/4216 , G02B6/30 , G02B6/3812
摘要： The orientation of the rotating direction of an optical fiber in an optical fiber array takes the positional axial displacement into consideration. In a method of aligning the orientation of optical fibers, or the axial displacement in an optical fiber array having a plurality of optical fibers, and an optical fiber holding member, an enlarged image of the optical fiber is obtained for each of the optical fibers using an image pick-up means. Then, a distribution of the characterized image corresponding to the positions in the radial direction of the image of the optical fiber are obtained from the enlarged image. From the distribution of the characterized image, the orientation of the rotational direction to the center of the optical fiber, or the positional axial displacement of the core center, is measured. Based on the measured result, the orientation of the rotational direction, or the positional axial displacement to the holding member of the optical fiber, is aligned with an optical fiber rotating mechanism.
摘要翻译： 光纤阵列中的光纤的旋转方向的取向考虑了位置轴向位移。 在对准光纤的取向或具有多个光纤的光纤阵列中的轴向位移和光纤保持部件的方法中，对于每根光纤获得光纤的放大图像，使用 图像拾取装置。 然后，从放大图像中获得与光纤的图像的径向位置对应的特征图像的分布。 根据特征图像的分布，测量旋转方向朝向光纤中心的方位，或芯中心的位置轴向位移。 基于测量结果，旋转方向的取向或光纤的保持构件的位置轴向位移与光纤旋转机构对准。
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公开(公告)号：US4848867A
公开(公告)日：1989-07-18
申请号：US247784
申请日：1988-09-22
CPC分类号： G02B6/3812 , G02B6/32 , G02B6/3604
摘要： A rotary joint for polarization plane maintaining optical fibers which can couple two polarization plane maintaining optical fibers to each other while maintaining the polarization plane maintaining property. The rotary joint comprises a rotary member, a fixed member, two optical fiber collimators and a 1/2 wavelength plate for coupling a polarization plane maintaining optical fiber connected to the rotary member with another polarization plane maintaining optical fiber connected to the fixed member, and gears for rotating the 1/2 wavelength plate at a speed equal to one half the rotational speed of the polarization plane maintaining optical fiber on the rotary member side.
摘要翻译： 一种用于维持偏振平面的光纤的旋转接头，其可以将维持光纤的两个偏振面彼此耦合，同时保持偏振面的维持性。 旋转接头包括旋转构件，固定构件，两个光纤准直器和用于将维持连接到旋转构件的维持光纤的偏振面保持连接到固定构件的另一偏振面的1/2波长板，以及 用于以等于将旋转构件侧保持光纤的偏振面的旋转速度的一半的速度旋转1/2波片的齿轮。
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公开(公告)号：US4493530A
公开(公告)日：1985-01-15
申请号：US394889
申请日：1982-07-02
IPC分类号： C03B37/012 , C03B37/018 , C03C3/04 , C03C13/04 , G02B6/024 , G02B6/10 , G02B5/172
CPC分类号： G02B6/105
摘要： A single polarization optical fiber has an elliptical jacket composed of SiO.sub.2 +F.sub.2 O+P.sub.2 O.sub.5, whereby increase in transmission loss at a long wavelength band is prevented.
摘要翻译： 单极化光纤具有由SiO 2 + F 2 O + P 2 O 5构成的椭圆形护套，能够防止长波长带的传输损失的增加。
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16.发明授权
公开(公告)号：US5482525A
公开(公告)日：1996-01-09
申请号：US068645
申请日：1993-05-28
IPC分类号： C03B37/012 , C03B37/014 , C03C13/04 , G02B6/10 , C03B37/023
CPC分类号： C03B37/01217 , C03B37/01466 , C03B37/01493 , C03C13/04 , G02B6/105 , C03B2203/10 , C03B2203/12 , C03B2203/22 , C03B2203/30 , Y02P40/57
摘要： A method of producing an elliptic core type polarization-maintaining optical fiber comprises the steps of providing a glass rod comprising a cladding glass layer around the periphery of a core glass layer, the cladding glass layer having a softening point higher than the softening point of the core glass layer, removing two side surface portions of the glass rod by machining along the axial direction of the glass rod to form a machined rod noncircular in cross section, outside depositing fine silica glass particles on the periphery of the machined rod, followed by sintering to provide a support glass layer having a softening point higher than the softening point of the cladding glass layer, and drawing the thus obtained glass rod body as an optical fiber preform. Since the portion for constituting the core of the optical fiber is formed by machining, the core is permitted to have a high ellipticity. An optical fiber with the desired size and birefringence index is obtained by regulating the conditions of production.
摘要翻译： 一种制造椭圆型偏振保持光纤的方法包括以下步骤：在芯玻璃层的周围设置包括包层玻璃层的玻璃棒，所述包层玻璃层的软化点高于软化点 芯玻璃层，通过沿着玻璃棒的轴向的机械加工来除去玻璃棒的两个侧面部分，以形成横截面为非圆形的加工棒，在加工棒的周围沉积细二氧化硅玻璃颗粒，然后烧结 提供软化点高于包层玻璃层的软化点的支撑玻璃层，并且将由此获得的玻璃棒体拉制成光纤预制件。 由于通过机械加工形成用于构成光纤的芯的部分，所以允许芯具有高的椭圆率。 通过调节生产条件获得具有所需尺寸和双折射指数的光纤。
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公开(公告)号：US5239362A
公开(公告)日：1993-08-24
申请号：US454224
申请日：1989-12-21
申请人： Hiroshi Kajioka
发明人： Hiroshi Kajioka
IPC分类号： G01C19/72
CPC分类号： G01C19/72
摘要： The fiber-optic rotation sensor comprises a sensing loop using an optical fiber which essentially performs a single polarization when bent, both end portions of the sensing loop being disposed with the principal axes of polarization thereof orthogonal to each other and the end portions being joined by an evanescent wave coupling to form a ring interferometer, a device for introducing to an input end of the interferometer a linearly polarized light at a bearing of 45.degree. relative to the principal axis of polarization of the interferometer, and a retardation measuring system provided at an output end of the interferometer for picking up an electrical output proportional to a rotational angular velocity applied to the interferometer. When the linearly-polarized light is introduced to the input end of the coupling portion of the ring interferometer at a bearing of 45.degree. with respect to the principal axis of polarization of the interferometer, the light is branched into two polarized light beams running through the sensing loop, one clockwise and the other counterclockwise. The polarized light beams are recombined with each other to be input to the retardation measuring system from which an electrical output proportional to the rotational angular velocity applied to the interferometer is picked up.
摘要翻译： 光纤旋转传感器包括使用光纤的感测回路，当弯曲时基本上执行单个偏振，感测回路的两个端部被设置成其主要极化轴彼此正交，并且端部通过 衰减波耦合以形成环形干涉仪，用于将干涉仪的输入端引入相对于干涉仪的主偏振轴的45°轴线处的线偏振光的装置，以及设置在该干涉仪的延迟测量系统 用于拾取与施加到干涉仪的旋转角速度成比例的电输出的干涉仪的输出端。 当线偏振光以相对于干涉仪的主偏振轴为45°的轴承被引入到环形干涉仪的耦合部分的输入端时，该光被分支成穿过该干涉仪的两个偏振光束 感测回路，顺时针方向和逆时针方向。 偏振光束彼此重新组合以输入到延迟测量系统，从该延迟测量系统拾取与施加到干涉仪的旋转角速度成比例的电输出。
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公开(公告)号：US20120071738A1
公开(公告)日：2012-03-22
申请号：US13254839
申请日：2009-03-04
申请人： Hiroshi Kajioka , Yusaku Tottori
发明人： Hiroshi Kajioka , Yusaku Tottori
IPC分类号： A61B5/1455 , G01N33/48 , G01N21/21
CPC分类号： A61B5/14532 , A61B5/0059 , A61B5/14558 , A61B5/6816 , A61B5/6826 , A61B5/6838
摘要： A small-size optical rotation measuring device for detecting an organism, a tissue, blood, or molecules having rotatory power and determining the content thereof with high accuracy and an optical rotation measuring method for detecting an organism, a tissue, blood, or molecules having rotatory power and determining the content thereof with high accuracy. A nonreciprocal optical system is disposed in a loop optical path of a ring optical interferometer, and thereby light beams of circularly polarized modes orthogonal to each other are propagated in opposite directions through a sample to be measured. The wavelength of the light beams from a light source is in a wavelength region where the loss by the nonreciprocal optical element is low. A signal processing technique for phase-modulation optical fiber gyro having the highest resolution among ring interferometers is applied.
摘要翻译： 一种用于检测生物体，组织，血液或具有旋转力的分子并且以高精度确定其含量的小尺寸光学旋转测量装置和用于检测生物体，组织，血液或具有 旋转力并以高精度确定其含量。 非环形光学系统设置在环形光学干涉仪的环路光路中，从而相互正交的圆偏振光束通过待测样品沿相反方向传播。 来自光源的光束的波长处于不可逆光学元件的损耗低的波长区域。 应用在环形干涉仪中具有最高分辨率的相位调制光纤陀螺的信号处理技术。
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公开(公告)号：US4584470A
公开(公告)日：1986-04-22
申请号：US558941
申请日：1983-12-07
申请人： Hisao Iizuka , Hiroshi Kajioka
发明人： Hisao Iizuka , Hiroshi Kajioka
IPC分类号： G01R33/032 , G01B11/00
CPC分类号： G01R33/0322
摘要： In a single-polarization fiber optics magnetic sensor comprising a light source, a Faraday rotation element, a photodetector, and optical waveguide means for optically coupling them; according to a first embodiment, the optical waveguide means comprises upstream and downstream polarization-maintaining optical fibers coupled to the entrance and exit of the Faraday rotation element without a polarizer or an analyzer interposed therebetween; according to a second embodiment, in addition thereto, the axis of polarization of the downstream polarization-maintaining optical fiber is at an angle of about 45 degrees with respect to the orientation of the linearly polarized light exiting from the Faraday rotation element at a magnetic field intensity H equal to 0; and according to a third embodiment, in addition thereto, a polarization beam splitter is located in alignment with the orientation of polarization of the exit light from the downstream polarization-maintaining optical fiber, and two polarized light beams produced by said beam splitter are received by two photo-detectors for subsequent signal computation.
摘要翻译： 在包括光源，法拉第旋转元件，光电检测器和用于光学耦合它们的光波导装置的单偏振光纤磁传感器中; 根据第一实施例，光波导装置包括耦合到法拉第旋转元件的入口和出口的上游和下游偏振保持光纤，而不夹有偏振器或分析器; 根据第二实施例，除此之外，下游偏振波保持光纤的偏振轴相对于从法拉第旋转元件在磁场出射的线偏振光的取向为大约45度的角度 强度H等于0; 并且根据第三实施例，除此之外，偏振分束器与来自下游偏振保持光纤的出射光的偏振取向对准，并且由所述分束器产生的两个偏振光束被 两个光电检测器用于后续信号计算。
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