公开(公告)号：US07859662B2

公开(公告)日：2010-12-28

申请号：US11856959

申请日：2007-09-18

申请人： Yutaro Hamatani ,  Shigeki Kanamaru ,  Tateki Mitani ,  Eiji Yagyu

发明人： Yutaro Hamatani ,  Shigeki Kanamaru ,  Tateki Mitani ,  Eiji Yagyu

IPC分类号： G01J3/40

CPC分类号： G01N21/431 ,  G01N21/85 ,  G01N33/2852

摘要： The detection device provides with an optical fiber composed of a core, a clad and a fiber jacket. A grating is applied to the core, and the fiber jacket located at the portion to which the grating is applied is removed so that the clad is in contact with a fuel fed to an injector of a vehicle. The detection device also provides with a light source for incidence of a light in a range of clad mode wavelength to the optical fiber, and a light-sensitive part for detecting an intensity of the light transmitting through the region to which the grating is applied. The optical fiber, light source and light-sensitive part are held in a conduit disposed in a fuel tank or between a fuel pump and the injector of the vehicle.

摘要翻译： 检测装置提供由芯，包层和纤维套组成的光纤。 将光栅施加到芯上，并且去除位于施加光栅的部分处的光纤护套，使得包层与馈送到车辆的喷射器的燃料接触。 该检测装置还提供一个光源，用于将包围模式波长范围内的光入射到光纤;以及光敏部分，用于检测通过施加光栅的区域透射的光的强度。 光纤，光源和感光部分被保持在设置在燃料箱中的导管中，或燃料泵与车辆的喷射器之间。

公开(公告)号：US08285086B2

公开(公告)日：2012-10-09

申请号：US12529865

申请日：2008-01-07

申请人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Eiji Yagyu ,  Tateki Mitani ,  Yutaro Hamatani

发明人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Eiji Yagyu ,  Tateki Mitani ,  Yutaro Hamatani

IPC分类号： G02B6/00 ,  G02B6/34

CPC分类号： G01N21/774

摘要： An optical fiber sensor measuring refractive index of a medium with high sensitivity in a wide range. The optical fiber sensor includes an optical fiber causing a transmission loss due to leakage in the clad propagation mode from a portion of a core and a clad where a Bragg grating is provided, a light source permitting light in a wavelength band in the clad propagation mode to enter the optical fiber, and a light-receiving section receiving the transmitted or reflected light transmitted through the core and the clad at the portion where the Bragg grating is provided. The refractive index of the medium to be measured in contact with the clad is measured according to total intensity of the light received by the light-receiving section. The Bragg grating is inclined at a predetermined angle of inclination to the vertical line vertical to the length direction of the optical fiber.

摘要翻译： 测量宽范围高灵敏度介质折射率的光纤传感器。 光纤传感器包括光纤，该光纤引起由包层传播模式中的泄漏引起的传输损耗，其中芯部和布拉格光栅的包层部分，允许在覆盖传播模式中波长带的光的光源 以及光接收部分，其接收在布拉格光栅提供的部分处透射穿过芯体和包层的透射或反射光。 根据由光接收部接收的光的总强度来测量与包层接触的待测量介质的折射率。 布拉格光栅以与光纤的长度方向垂直的垂直线倾斜预定的倾斜角度。

公开(公告)号：US20100080502A1

公开(公告)日：2010-04-01

申请号：US12529865

申请日：2008-01-07

申请人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Eiji Yagyu ,  Tateki Mitani ,  Yutaro Hamatani

发明人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Eiji Yagyu ,  Tateki Mitani ,  Yutaro Hamatani

IPC分类号： G02B6/00

CPC分类号： G01N21/774

摘要： An optical fiber sensor measuring refractive index of a medium with high sensitivity in a wide range. The optical fiber sensor includes an optical fiber causing a transmission loss due to leakage in the clad propagation mode from a portion of a core and a clad where a Bragg grating is provided, a light source permitting light in a wavelength band in the clad propagation mode to enter the optical fiber, and a light-receiving section receiving the transmitted or reflected light transmitted through the core and the clad at the portion where the Bragg grating is provided. The refractive index of the medium to be measured in contact with the clad is measured according to total intensity of the light received by the light-receiving section. The Bragg grating is inclined at a predetermined angle of inclination to the vertical line vertical to the length direction of the optical fiber.

摘要翻译： 测量宽范围高灵敏度介质折射率的光纤传感器。 光纤传感器包括光纤，该光纤引起由包层传播模式中的泄漏引起的传输损耗，其中芯部和布拉格光栅的包层部分，允许在覆盖传播模式中波长带的光的光源 以及光接收部分，其接收在布拉格光栅提供的部分处透射穿过芯体和包层的透射或反射光。 根据由光接收部接收的光的总强度来测量与包层接触的待测量介质的折射率。 布拉格光栅以与光纤的长度方向垂直的垂直线倾斜预定的倾斜角度。

公开(公告)号：US20100296080A1

公开(公告)日：2010-11-25

申请号：US12745815

申请日：2008-12-03

申请人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Eiji Yagyu ,  Kiichi Yoshiara ,  Tateki Mitani ,  Yutarou Hamatani

发明人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Eiji Yagyu ,  Kiichi Yoshiara ,  Tateki Mitani ,  Yutarou Hamatani

IPC分类号： G01N21/41

CPC分类号： G01N21/431 ,  G01D5/35383 ,  G01N2021/433 ,  G02B6/02085

摘要： An objective of the present invention is to provide an optical fiber sensor which has a simple configuration to enable sensitively measuring a refractive index of a measurement medium in a wide range of refractive indexes. An optical fiber sensor according to the present invention includes; an optical fiber having a core in which a short-period gratings are formed and a cladding, the optical fiber being made so that transmission loss occurs due to cladding-propagation-mode leakage at its cladding portion where the short-period gratings are formed; a light source from which light having a wavelength range of the cladding propagation mode is emitted; and a light receiving unit for receiving transmission or reflection light having passed through the cladding at the position where the short-period gratings are formed. The optical fiber sensor detects, based on the total receiving light intensity that the light receiving unit receives, the refractive index of the measurement medium contacting the cladding, in which the optical fiber is multi-mode one, and the short-period gratings have plural kinds of periods.

摘要翻译： 本发明的目的是提供一种光纤传感器，其具有能够在宽范围的折射率下敏感地测量测量介质的折射率的简单配置。 根据本发明的光纤传感器包括： 具有形成短周期光栅的芯的光纤和包层，使得在形成有短周期光栅的包层部分由于包层传播模式泄漏而发生传输损耗的光纤; 发射具有包层传播模式的波长范围的光的光源; 以及光接收单元，用于在形成短周期光栅的位置处接收穿过包层的透射或反射光。 光纤传感器基于光接收单元接收的总接收光强度来检测与光纤为多模光纤的包层接触的测量介质的折射率，短周期光栅具有多个 种类的时期。

公开(公告)号：US08351029B2

公开(公告)日：2013-01-08

申请号：US12745815

申请日：2008-12-03

申请人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Eiji Yagyu ,  Kiichi Yoshiara ,  Tateki Mitani ,  Yutarou Hamatani

发明人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Eiji Yagyu ,  Kiichi Yoshiara ,  Tateki Mitani ,  Yutarou Hamatani

IPC分类号： G01N21/41 ,  G01J1/00

CPC分类号： G01N21/431 ,  G01D5/35383 ,  G01N2021/433 ,  G02B6/02085

摘要： An objective of the present invention is to provide an optical fiber sensor which has a simple configuration to enable sensitively measuring a refractive index of a measurement medium in a wide range of refractive indexes. An optical fiber sensor according to the present invention includes; an optical fiber having a core in which a short-period gratings are formed and a cladding, the optical fiber being made so that transmission loss occurs due to cladding-propagation-mode leakage at its cladding portion where the short-period gratings are formed; a light source from which light having a wavelength range of the cladding propagation mode is emitted; and a light receiving unit for receiving transmission or reflection light having passed through the cladding at the position where the short-period gratings are formed. The optical fiber sensor detects, based on the total receiving light intensity that the light receiving unit receives, the refractive index of the measurement medium contacting the cladding, in which the optical fiber is multi-mode one, and the short-period gratings have plural kinds of periods.

摘要翻译： 本发明的目的是提供一种光纤传感器，其具有能够在宽范围的折射率下敏感地测量测量介质的折射率的简单配置。 根据本发明的光纤传感器包括： 具有形成短周期光栅的芯的光纤和包层，使得在形成有短周期光栅的包层部分处的包层传播模式泄漏的情况下，使光纤发生传输损耗; 发射具有包层传播模式的波长范围的光的光源; 以及光接收单元，用于在形成短周期光栅的位置处接收穿过包层的透射或反射光。 光纤传感器基于光接收单元接收的总接收光强度来检测与光纤为多模光纤的包层接触的测量介质的折射率，短周期光栅具有多个 种类的时期。

公开(公告)号：US20130156361A1

公开(公告)日：2013-06-20

申请号：US13327642

申请日：2011-12-15

申请人： Keisuke Kojima ,  Wangqing Yuan ,  Bingnan Wang ,  Eiji Yagyu

发明人： Keisuke Kojima ,  Wangqing Yuan ,  Bingnan Wang ,  Eiji Yagyu

IPC分类号： G02B6/14

CPC分类号： G02B6/14 ,  G02B6/1228

摘要： A mode-evolution compound converter for processing an optical signal that includes a first component having a fundamental transverse magnetic (TM) mode and a second component having a fundamental transverse electric (TE) mode is disclosed. The compound converter includes a set of multiple converters connected to form a compound converter, wherein each converter is a mode-evolution converter selected from a group including a polarization converter, a spatial converter, and combination thereof, wherein the polarization converter at least converts a mode of a polarization of at least one component of the optical signal, and the spatial mode converter at least converts a spatial mode order of at least one component of the optical signal.

摘要翻译： 公开了一种用于处理光信号的模式演化复合转换器，其包括具有基本横向磁（TM）模式的第一分量和具有基本横向电（TE）模式的第二分量。 复合转换器包括一组连接形成复合转换器的多个转换器，其中每个转换器是从包括偏振转换器，空间转换器及其组合的组中选择的模式演进转换器，其中偏振转换器至少将 所述光信号的至少一个分量的偏振模式，并且所述空间模式转换器至少转换所述光信号的至少一个分量的空间模式阶数。

公开(公告)号：US20120153132A1

公开(公告)日：2012-06-21

申请号：US13298702

申请日：2011-11-17

申请人： Yuichiro Horiguchi ,  Kohei Sugihara ,  Yasuhisa Shimakura ,  Toshiharu Miyahara ,  Satoshi Kajiya ,  Satoshi Nishikawa ,  Eiji Yagyu

发明人： Yuichiro Horiguchi ,  Kohei Sugihara ,  Yasuhisa Shimakura ,  Toshiharu Miyahara ,  Satoshi Kajiya ,  Satoshi Nishikawa ,  Eiji Yagyu

IPC分类号： H03F1/00 ,  H05K1/00

CPC分类号： G02B6/4274 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48227 ,  H01L2224/49433 ,  H01L2924/3011 ,  H01L2924/30111 ,  H01L2924/3025 ,  H01L2924/00014 ,  H01L2924/00

摘要： An element carrier has a mounting surface where at least one element outputting a high-frequency signal is disposed. A first dielectric layer has a first side surface partially forming the mounting surface and a first main surface connecting to the first side surface and extending in an intersecting direction intersecting with the mounting surface. A first wiring pattern is provided on the first main surface and extends from the first side surface. A second dielectric layer has a second side surface partially forming the mounting surface and a second main surface connecting to the second side surface and extending in the intersecting direction, and is provided on a part of the first main surface of the first dielectric layer where the first wiring pattern is provided. A second wiring pattern is provided on the second main surface of the second dielectric layer and extends from the second side surface.

摘要翻译： 元件载体具有其中设置有至少一个输出高频信号的元件的安装表面。 第一电介质层具有部分地形成安装表面的第一侧表面和连接到第一侧表面并沿与安装表面相交的相交方向延伸的第一主表面。 第一布线图案设置在第一主表面上并且从第一侧表面延伸。 第二电介质层具有部分地形成安装面的第二侧面和与第二侧面连接并且在交叉方向上延伸的第二主表面，并且设置在第一电介质层的第一主表面的一部分上， 提供第一布线图案。 第二布线图案设置在第二介电层的第二主表面上并且从第二侧表面延伸。

公开(公告)号：US07910953B2

公开(公告)日：2011-03-22

申请号：US12269206

申请日：2008-11-12

申请人： Masaharu Nakaji ,  Eitaro Ishimura ,  Eiji Yagyu

发明人： Masaharu Nakaji ,  Eitaro Ishimura ,  Eiji Yagyu

IPC分类号： H01L33/00

CPC分类号： H01L31/105 ,  B82Y20/00 ,  H01L31/02327 ,  H01L31/103 ,  H01L31/1075 ,  H01S5/18361 ,  H01S5/323 ,  H01S2301/173

摘要： An optical semiconductor device includes a distributed Bragg reflection layer of a first conductivity type, a distortion elaxation layer of the first conductivity type, a light absorbing layer, and a semiconductor layer of a second conductivity type, sequentially arranged on a semiconductor substrate. The distortion relaxation layer the same material as the semiconductor substrate. The total optical length of layers between the distributed Bragg reflection layer and the light absorbing layer is an integer multiple of one-half the wavelength of incident light that is detected.

摘要翻译： 一种光半导体器件包括依次配置在半导体衬底上的第一导电类型的分布布拉格反射层，第一导电类型的失真拉伸层，光吸收层和第二导电类型的半导体层。 失真弛豫层与半导体基板相同。 分布布拉格反射层和光吸收层之间的层的总光学长度是检测到的入射光的波长的一半的整数倍。

公开(公告)号：US20080290369A1

公开(公告)日：2008-11-27

申请号：US12103280

申请日：2008-04-15

申请人： Eiji Yagyu ,  Eitaro Ishimura ,  Masaharu Nakaji

发明人： Eiji Yagyu ,  Eitaro Ishimura ,  Masaharu Nakaji

IPC分类号： H01L31/109 ,  H01L31/18

CPC分类号： H01L31/107 ,  H01L31/03046 ,  H01L31/1035 ,  H01L31/109 ,  H01L31/1844 ,  Y02E10/544

摘要： A semiconductor light-receiving device and its manufacturing method are provided which are capable of suppressing dark current and deterioration. Semiconductor crystals were sequentially grown over an n-type InP substrate, including an n-type InP buffer layer, an undoped GaInAs light absorption layer, an undoped InP diffusion buffer layer, and a p-type InP window layer. Next, a first mesa was formed by removing a part from the p-type InP window layer to the n-type InP buffer layer with a Br-based etchant having low etching selectivity, so as to form a sloped “normal” mesa structure. Next, a second mesa having a smaller diameter than the first mesa was formed by dry etching, by precisely removing a part from the p-type InP window layer to a certain mid position of the undoped InP diffusion buffer layer.

摘要翻译： 提供能够抑制暗电流和劣化的半导体光接收装置及其制造方法。 半导体晶体依次生长在n型InP衬底上，包括n型InP缓冲层，未掺杂的GaInAs光吸收层，未掺杂的InP扩散缓冲层和p型InP窗口层。 接下来，通过使用具有低蚀刻选择性的Br基蚀刻剂从p型InP窗口层中去除一部分到n型InP缓冲层来形成第一台面，从而形成倾斜的“正常”台面结构。 接下来，通过干蚀刻，通过将p型InP窗口层中的一部分精确地去除到未掺杂的InP扩散缓冲层的某个中间位置，形成直径小于第一台面的第二台面。

公开(公告)号：US20050230706A1

公开(公告)日：2005-10-20

申请号：US11098558

申请日：2005-04-05

申请人： Eiji Yagyu ,  Nobuyuki Tomita ,  Eitaro Ishimura ,  Masaharu Nakaji

发明人： Eiji Yagyu ,  Nobuyuki Tomita ,  Eitaro Ishimura ,  Masaharu Nakaji

IPC分类号： H01L31/107 ,  H01L31/072

CPC分类号： H01L31/107

摘要： An objective is to provide an avalanche photodiode that is excellent in device characteristics such as reliability. An avalanche photodiode is provided, which includes a substrate 1 formed with a light receiving region 3 on a multiplication layer 119, and formed with layers of differing semiconductor type with the multiplication layer 119 intervening, a ring-shaped groove 7 formed on the end face of the substrate 1 on its light-receiving-region side, in such a way that the groove surrounds the light receiving region 3, and one or more steps 5 provided on a side wall of the ring-shaped groove 7, in a range of from ¼ to ¾ of the depth of the groove. In the avalanche photodiode described above, because one or more steps provided on the side wall of the ring-shaped groove in the range of from ¼ to ¾ of the depth of the groove, discontinuity at the edge of the ring-shaped groove can be effectively prevented from occurring; consequently, an avalanche photodiode excellent in device characteristics such as reliability can be obtained.

摘要翻译： 目的是提供一种在可靠性等装置特性方面优异的雪崩光电二极管。 提供了一种雪崩光电二极管，其包括：在乘法层119上形成有受光区域3的基板1，并且形成有具有不同半导体类型的层和乘法层119，形成在端面上的环形槽7 基板1在其受光区域侧，使得沟槽围绕光接收区域3，以及设置在环形槽7的侧壁上的一个或多个台阶5在一定范围内 从凹槽的深度的1/4到¾。 在上述雪崩光电二极管中，由于在槽的深度的1/4至3/4的范围内设置在环状槽的侧壁上的一个或多个台阶，所以环形槽的边缘处的不连续性可以是 有效防止发生; 因此，可以获得诸如可靠性的器件特性优异的雪崩光电二极管。