公开(公告)号：US5587785A

公开(公告)日：1996-12-24

申请号：US407671

申请日：1995-03-21

申请人： Satoru Kato ,  Hiroshi Ito ,  Tadashi Ichikawa ,  Manabu Kagami

发明人： Satoru Kato ,  Hiroshi Ito ,  Tadashi Ichikawa ,  Manabu Kagami

IPC分类号： G01P5/00 ,  G01F1/66 ,  G01P3/36 ,  G01P5/26 ,  G01S17/58 ,  G01S17/95 ,  G01D3/36

CPC分类号： G01P5/26 ,  G01P3/366 ,  G01S17/95

摘要： A laser Doppler velocimeter in which laser light whose frequency changes continuously at least for a fixed time duration is branched into at least two beams, and the at least two branched beams are respectively transmitted by at least one pair of optical fibers having an optical path difference therebetween, and are focused onto a region to be measured by at least one focusing device. The scattered light of the laser beams focused in the region to be measured are received by a light-receiving device via at least one incident device. At least one Doppler shift frequency in the region to be measured is calculated on the basis of the frequency of a signal of the scattered light received by the light-receiving device, the optical path difference, and a rate of change of the frequency of the laser light. The flow velocity and the direction of the flow velocity are calculated from the calculated Doppler shift frequency.

摘要翻译： 一种激光多普勒测速仪，其中频率连续至少持续固定持续时间的激光被分支成至少两个光束，并且所述至少两个分支光束分别由具有光程差的至少一对光纤传输 并且通过至少一个聚焦装置聚焦到待测量的区域上。 聚焦在待测区域中的激光束的散射光经由至少一个入射装置由光接收装置接收。 基于由受光装置接收的散射光的信号的频率，光程差以及频率的变化率来计算待测区域中的至少一个多普勒频移 激光灯。 从计算出的多普勒频移计算流速和流速方向。

公开(公告)号：US5278499A

公开(公告)日：1994-01-11

申请号：US787791

申请日：1991-11-04

申请人： Hiroshi Ito ,  Tadashi Ichikawa ,  Satoru Kato

发明人： Hiroshi Ito ,  Tadashi Ichikawa ,  Satoru Kato

IPC分类号： G01R15/24 ,  G01R29/08 ,  G01R33/032 ,  G02B6/34 ,  G01R33/02 ,  G01D5/34 ,  G02B5/14 ,  H01J5/16

CPC分类号： G01R33/032 ,  G01R29/0885

摘要： An electromagnetic field intensity measuring apparatus comprises a sensor located in the electromagnetic field measuring place for receiving the measuring light from the optical fiber, the sensor being adapted to modulate the measuring light entering the sensor depending on the intensity of the electromagnetic field, the modulated light being then re-applied to the optical fiber; a polarization rotating device located between the measuring light generating device and the optical fiber, the polarization rotation device being operative to cause the polarized wavefront of the measuring light passed therethrough to rotate a given angle in the direction of passage; and a polarization beam splitter disposed between the measuring light generating device and the polarization rotating device, the polarization beam splitter being operative to permit only the measuring light from said measuring light generating device to pass through said polarization beam splitter and also to reflect the modulated measuring light inputted through the polarization rotating device in a predetermined direction. The electromagnetic field intensity in the measuring place can be calculated, based on the amplitude of the measuring light reflected by the polarization beam splitter.

摘要翻译： 电磁场强度测量装置包括位于电磁场测量位置的传感器，用于接收来自光纤的测量光，该传感器适于根据电磁场的强度调制进入传感器的测量光，调制光 然后再次应用于光纤; 位于所述测量光产生装置和所述光纤之间的偏振旋转装置，所述偏振旋转装置可操作以使通过的测量光的偏振波前沿通过方向旋转给定的角度; 以及设置在所述测量光产生装置和所述偏振旋转装置之间的偏振分束器，所述偏振分束器用于仅允许来自所述测量光产生装置的测量光通过所述偏振分束器并且还将所述调制测量 通过偏振旋转装置沿预定方向输入的光。 可以根据由偏振分束器反射的测量光的振幅来计算测量场所的电磁场强度。

公开(公告)号：US5969341A

公开(公告)日：1999-10-19

申请号：US949006

申请日：1997-10-10

申请人： Hiroshi Ito ,  Tadashi Ichikawa ,  Satoru Kato

发明人： Hiroshi Ito ,  Tadashi Ichikawa ,  Satoru Kato

IPC分类号： G01R29/08 ,  G01R1/07 ,  G01R13/34 ,  G02B5/14

CPC分类号： G01R1/071 ,  G01R13/347

摘要： A compact voltage sensor with stable characteristics is provided. A measuring beam that is incident from an optical fiber is branched into first and second modulation-inducing waveguides of a wave branching/combining section within an optical integrated circuit. Phase changes of opposite sign are induced in the measuring beams propagating within the first and second modulation waveguides by applying voltages of mutually opposite sign to modulation-inducing electrodes, to induce a phase difference between the two. By reflecting the measuring beams from a reflective surface, propagating them back in the opposite direction within the first and second modulation waveguides, and passing them through the optical intensity modulation section again, thus applying a further phase modulation thereto, the phase difference between the measuring beams proceeding in the opposite direction within the first and second modulation waveguides can be made to be substantially twice the phase difference of the measuring beams before they are reflected by the reflective surface. The sensor also has a function to protect a sensor section thereof from dielectric breakdown caused by the accidental input of a high voltage.

摘要翻译： 提供具有稳定特性的紧凑型电压传感器。 从光纤入射的测量光束被分支到光集成电路内的波分支/合成部分的第一和第二调制诱导波导。 通过向调制诱导电极施加相互相反的电压的电压，在第一和第二调制波导中传播的测量光束中引起相反符号的相位变化，以引起两者之间的相位差。 通过从反射表面反射测量光束，在第一和第二调制波导内沿相反方向传播它们，并再次通过光强度调制部分，从而对其进行相位调制，测量之间的相位差 在第一调制波导和第二调制波导之间沿相反方向前进的光束在被反射表面反射之前可以大致是测量光束的相位差的两倍。 传感器还具有保护其传感器部分免受高电压意外输入引起的电介质击穿的功能。

公开(公告)号：US5227715A

公开(公告)日：1993-07-13

申请号：US787794

申请日：1991-11-04

申请人： Hiroshi Ito ,  Tadashi Ichikawa ,  Satoru Kato

发明人： Hiroshi Ito ,  Tadashi Ichikawa ,  Satoru Kato

IPC分类号： G01R29/08 ,  G01R15/24

CPC分类号： G01R15/242 ,  G01R15/247

摘要： An electromagnetic field intensity measuring apparatus capable of measuring an electromagnetic field intensity accurately and sensitively without affection by any disturbance, including a measuring light generating section for emitting a measuring light containing first and second polarized light components which are orthogonal to each other and slightly different in frequency from each other; an optical input polarization-maintaining fiber for receiving one of the first and second polarized light components in the direction of X-axis polarization and the other polarized light component in the direction of Y-axis polarization, the optical input polarization-maintaining fiber conducting the measuring light to the electromagnetic field measuring place; a sensor section disposed in the electromagnetic field measuring place, the sensor section receiving the measuring light from the optical input polarization-maintaining fiber and modulating the phase of the incident measuring light depending on the electromagnetic field intensity; and an optical output polarization-maintaining fiber for receiving one of the first and second polarized light components from the sensor section in the direction of X-axis polarization and the other polarized light component in the direction of Y-axis polarization, the optical output polarization-maintaining fiber conducting the measuring light outside the electromagnetic field measuring place. The phase difference between the first and second polarized light components contained in the measuring light from the optical output polarization-maintaining fiber is detected to determine the electromagnetic field intensity.

摘要翻译： 一种电磁场强度测量装置，其能够在不受任何干扰的情况下精确而灵敏地测量电磁场强度，包括测量光产生部分，用于发射包含彼此正交并且稍微不同的第一和第二偏振光分量的测量光 频率彼此; 用于在X轴偏振方向上接收第一和第二偏振光分量之一的光输入偏振保持光纤和沿Y轴偏振方向的另一偏振光分量，光输入偏振保持光纤传导 测量光到电磁场测量地点; 设置在电磁场测量位置的传感器部分，传感器部分接收来自光输入偏振保持光纤的测量光，并根据电磁场强度调制入射测量光的相位; 以及光输出偏振保持光纤，用于从X轴偏振方向接收来自传感器部分的第一和第二偏振光分量中的一个，并且在Y轴偏振方向上接收另一偏振光分量，光输出偏振 - 将测量光传导到电磁场测量场所外。 检测包含在来自光输出偏振保持光纤的测量光中的第一和第二偏振光分量之间的相位差，以确定电磁场强度。

公开(公告)号：US5210407A

公开(公告)日：1993-05-11

申请号：US879424

申请日：1992-05-07

申请人： Hiroshi Ito ,  Tadashi Ichikawa ,  Satoru Kato

发明人： Hiroshi Ito ,  Tadashi Ichikawa ,  Satoru Kato

IPC分类号： G01R29/08 ,  G01R29/12

CPC分类号： G01R29/12 ,  G01R29/0885

摘要： An apparatus measures the intensity of an electric field with a compact sensor equipped with a light modulater of a Mach-zender interferometer type and a condenser-type antenna. The sensor modulates coherent measuring lights propagated through branched two optical paths according to the voltage induced on the surfaces of plates of a condenser-type antenna of the sensor. The modulated lights are merged and interfered with each other and result in merged light different in intensity from the original measuring light. A waveguide-type optical integrated circuit formed in the sensor calculates the intensity of the merged light having the intensity dependent on the intensity of the magnetic field.

摘要翻译： 一种装置利用配备有Mach-zender干涉仪类型的光模块和冷凝器型天线的紧凑型传感器来测量电场的强度。 传感器根据传感器的冷凝器型天线的表面上感应的电压来调制通过分支的两个光路传播的相干测量光。 调制后的光合并并相互干扰，导致与原始测量光不同的合并光。 形成在传感器中的波导型光集成电路计算具有取决于磁场强度的强度的合并光的强度。

公开(公告)号：US07399498B2

公开(公告)日：2008-07-15

申请号：US10693605

申请日：2003-10-27

申请人： Yukitoshi Inui ,  Kuniyoshi Kondo ,  Tatsuya Yamashita ,  Akari Kawasaki ,  Manabu Kagami ,  Hiroshi Ito ,  Shin Sato ,  Hisao Kato

发明人： Yukitoshi Inui ,  Kuniyoshi Kondo ,  Tatsuya Yamashita ,  Akari Kawasaki ,  Manabu Kagami ,  Hiroshi Ito ,  Shin Sato ,  Hisao Kato

IPC分类号： B05D5/06

CPC分类号： G02B6/138 ,  C08J3/28 ,  G02B1/045 ,  G02B1/046

摘要： A transparent vessel is filled with a mixture solution containing a first photo-curable resin of a low refractive index and a second photo-curable resin of a high refractive index different in curing mechanism. When light at a wavelength capable of curing the first photo-curable resin but incapable of curing the second photo-curable resin is applied to the mixture solution through an optical fiber, the first photo-curable resin can be cured in a state in which the second photo-curable resin is enclosed in the cured first photo-curable resin. Because the refractive index increases according to curing, a self-condensing phenomenon can be generated so that an optical path portion is formed. The optical path portion emits leakage light to its surroundings to thereby form an outer circumferential portion. Then, all uncured resins in the mixture solution are cured. The outer circumferential portion containing a high percentage of the cured first photo-curable resin serves as a clad because the refractive index of the outer circumferential portion is lower than that of the optical path portion.

摘要翻译： 将透明容器填充有含有低折射率的第一光固化树脂和固化机理不同的高折射率的第二光固化树脂的混合溶液。 当通过光纤将能够固化第一光固化树脂但不能固化第二光固化树脂的波长的光施加到混合溶液时，第一光固化树脂可以在其中 将第二光固化树脂包封在固化的第一光固化树脂中。 由于折射率随着固化而增加，因此可以产生自聚光现象，从而形成光路部分。 光路部分向其周围发射泄漏光，从而形成外圆周部分。 然后，将混合溶液中的所有未固化树脂固化。 由于外周部的折射率低于光路部的折射率，所以含有高比例固化的第一光固化树脂的外周部分用作包层。

公开(公告)号：US06890589B2

公开(公告)日：2005-05-10

申请号：US10314961

申请日：2002-12-10

申请人： Yukitoshi Inui ,  Kuniyoshi Kondo ,  Tatsuya Yamashita ,  Akari Kawasaki ,  Manabu Kagami ,  Hiroshi Ito ,  Shin Sato ,  Eiichi Okazaki

发明人： Yukitoshi Inui ,  Kuniyoshi Kondo ,  Tatsuya Yamashita ,  Akari Kawasaki ,  Manabu Kagami ,  Hiroshi Ito ,  Shin Sato ,  Eiichi Okazaki

IPC分类号： G02B6/12 ,  C08L101/12 ,  G02B1/04 ,  G02B6/122 ,  G02B6/13 ,  C08J3/28 ,  G02B6/10 ,  G02B6/16

CPC分类号： G02B6/13 ,  G02B1/046 ,  G02B1/048 ,  G02B6/1221 ,  G02B2006/12069

摘要： Into a mixture solution 2 of a high-refractive-index photo-curable resin A and a low-refractive-index photo-curable resin B, light capable of curing only the resin A is led through an optical fiber 1 so that a cured resin 211 of the resin A having a diameter substantially equal to the diameter of a core portion of the optical fiber is formed so as to extend from a tip of the optical fiber. Then, the residual mixture solution 2 is cured. In this manner, a module having the previously cured high-refractive-index resin 211 as an optical waveguide can be formed easily. On this occasion, the mixed state of the mixture solution 2 can be kept good enough to facilitate the formation of the high-refractive-index resin 211 when the solubility parameter δA of the high-refractive-index photo-curable resin A and the solubility parameter δB and volume fraction ΦB of the low-refractive-index photo-curable resin B satisfy the following expression (4). |δA−δB|

摘要翻译： 向高折射率光固化树脂A和低折射率光固化树脂B的混合溶液2中通过光纤1引导能够固化树脂A的光，使得固化树脂 形成直径基本上等于光纤芯部直径的树脂A的211，以从光纤的末端延伸。 然后，使残留的混合溶液2固化。 以这种方式，可以容易地形成具有预先固化的高折射率树脂211作为光波导的模块。 在这种情况下，混合溶液2的混合状态可以保持足够好，以便当高折射率树脂211的溶解度参数ΔA时形成高折射率树脂211 光固化树脂A和低折射率光固化树脂B的溶解度参数δB B和体积分数Phi B B满足下式（4）。 <？in-line-formula description =“In-line Formulas”end =“lead”？> | delta

公开(公告)号：US06932880B2

公开(公告)日：2005-08-23

申请号：US10166378

申请日：2002-06-11

申请人： Yukitoshi Inui ,  Kuniyoshi Kondo ,  Manabu Kagami ,  Tatsuya Yamashita ,  Akari Kawasaki ,  Hiroshi Ito

发明人： Yukitoshi Inui ,  Kuniyoshi Kondo ,  Manabu Kagami ,  Tatsuya Yamashita ,  Akari Kawasaki ,  Hiroshi Ito

IPC分类号： G02B6/13 ,  G02B6/138 ,  G02B6/34 ,  G02B6/26

CPC分类号： G02B6/138 ,  G02B6/29362

摘要： Transparent parallel planar plates which are members for retaining an optical waveguide are provided erectly in an optical path of light in a transparent vessel in advance. An optical fiber is fixed into the transparent vessel while the optical fiber penetrates the transparent vessel, and an optical sensor is also disposed adjustably. Next, a first photo-curable resin solution is injected into the transparent vessel, and light with a predetermined wavelength for curing is emitted from the optical fiber so that the optical waveguide is self-formed by polymerization reaction. Because the parallel planar plates are transparent, the optical waveguide is formed so as to be extended again from the emission ports of the parallel planar plates. Finally, the optical waveguide is formed so as to reach a bottom surface of the transparent vessel. The optical waveguide has a structure in which the optical waveguide is firmly supported at four points in a forward end surface of the optical fiber, the parallel planar plates and the bottom surface of the transparent vessel. Accordingly, a firm optical waveguide device is formed.

摘要翻译： 用于保持光波导的构件的透明平行平板预先在透明容器的光路中直立设置。 光纤固定在透明容器中，同时光纤穿透透明容器，光学传感器也可调整地设置。 接着，将第一光固化树脂溶液注入到透明容器中，从光纤射出固化用的规定波长的光，使得光波导通过聚合反应自成型。 由于平行平板是透明的，所以光波导形成为从平行平板的发射端口再次延伸。 最后，形成光波导以到达透明容器的底面。 光波导具有这样的结构，其中光波导被牢固地支撑在光纤的前端表面，平行平板和透明容器的底表面的四个点处。 因此，形成牢固的光波导装置。

公开(公告)号：US06703188B1

公开(公告)日：2004-03-09

申请号：US09534458

申请日：2000-03-27

申请人： Manabu Kagami ,  Tatsuya Yamashita ,  Hiroshi Ito ,  Yasuhiko Takeda

发明人： Manabu Kagami ,  Tatsuya Yamashita ,  Hiroshi Ito ,  Yasuhiko Takeda

IPC分类号： G02B610

CPC分类号： G02B6/02038 ,  B29C35/0805 ,  B29C67/02 ,  B29C2035/0827 ,  B29C2035/0838 ,  B29C2791/001 ,  B29D11/00663 ,  B29K2105/0002 ,  B29L2011/0075 ,  G03F7/0037 ,  G03F7/2022

摘要： A method of fabricating an optical waveguide structure includes the step of introducing light into a photo-curable liquid resin. The liquid resin can be a mixture of two types of photo-curable liquid resins having different curing initiation wavelengths and different refractive indexes. The method can include dipping one end of a fiber into the liquid mixture. Light having a wavelength &lgr;1 can be radiated from the tip end of the optical fiber in order to cure one of the photo-curable liquid resins thereby forming a waveguide. Light having a different wavelength &lgr;2 can be radiated from an area surrounding the waveguide so as to cure the liquid mixture and form a cladding portion around the waveguide.

摘要翻译： 制造光波导结构的方法包括将光引入光固化液体树脂的步骤。 液体树脂可以是具有不同的固化起始波长和不同折射率的两种类型的可光固化液体树脂的混合物。 该方法可以包括将纤维的一端浸入液体混合物中。 可以从光纤的顶端辐射具有波长λ1的光，以便固化光可固化液体树脂之一，从而形成波导。 可以从波导周围的区域辐射具有不同波长λ2的光，以固化液体混合物并在波导周围形成包层部分。

公开(公告)号：US6081639A

公开(公告)日：2000-06-27

申请号：US907618

申请日：1997-08-08

申请人： Manabu Kagami ,  Kazuo Hasegawa ,  Hiroshi Ito

发明人： Manabu Kagami ,  Kazuo Hasegawa ,  Hiroshi Ito

IPC分类号： G02B6/122 ,  G02B6/12 ,  G02B6/125 ,  G02B6/26

CPC分类号： G02B6/125 ,  G02B2006/12119 ,  G02B2006/12195

摘要： An optical branching device includes a main waveguide and a branching waveguide. A portion of the main waveguide is bent and the branching waveguide is placed close to the bent part of the main waveguide. The branching waveguide has a taper structure such that a width of the branching waveguide is gradually decreased in a propagation direction of light. A central axis of the branching waveguide is tilted from a line extended from a straight part of the main waveguide toward the direction X, or the bending direction of the main waveguide. An input end of the branching waveguide has a normal vector tilted from the central axis of the branching waveguide toward the direction Y, an opposite direction of the bending direction of the main waveguide. With above-mentioned structures, light radiated from the bent part of the main waveguide can be launched into the input end of the branching waveguide and transmitted through the branching waveguide efficiently.

摘要翻译： 光分路装置包括主波导和分支波导。 主波导的一部分被弯曲，并且分支波导放置成靠近主波导的弯曲部分。 分支波导具有锥形结构，使得分支波导的宽度在光的传播方向上逐渐减小。 分支波导的中心轴线从主波导的直线部分向X方向或主波导的弯曲方向倾斜。 分支波导的输入端具有从分支波导的中心轴朝向Y方向倾斜的法线向量，与主波导的弯曲方向相反。 利用上述结构，从主波导的弯曲部辐射的光可以发射到分支波导的输入端并有效地透过分支波导。