公开(公告)号：US20080094619A1

公开(公告)日：2008-04-24

申请号：US11976087

申请日：2007-10-19

申请人： Haruo Nakaji

发明人： Haruo Nakaji

IPC分类号： G02B27/32

CPC分类号： A61B5/14552 ,  A61B5/0059 ,  G02B6/03638 ,  G02B6/04

摘要： An object of the present invention is to provide an optical measuring device and optical measuring method capable of locally irradiating a measuring object with light and efficiently receiving reflection, scattered light, fluorescence, etc. from the measuring object.An optical measuring device according to the present invention has a light emitting portion; an irradiation waveguide for guiding light from the light emitting portion toward an object; a receiving waveguide for guiding light from the object; and a light receiving portion for receiving the light having been guided through the receiving waveguide; and is characterized in that a numerical aperture at a receiving end of the receiving waveguide is larger than a numerical aperture at an emission end of the irradiation waveguide.

摘要翻译： 本发明的目的是提供一种能够用光局部照射测量对象并有效地从测量对象接收反射，散射光，荧光等的光学测量装置和光学测量方法。 根据本发明的光学测量装置具有发光部分; 用于将来自发光部分的光引导到物体的照射波导; 用于引导来自物体的光的接收波导; 以及用于接收已经被引导通过接收波导的光的光接收部分; 其特征在于，所述接收波导的接收端的数值孔径大于所述照射波导的发射端的数值孔径。

公开(公告)号：US09179842B2

公开(公告)日：2015-11-10

申请号：US14116732

申请日：2012-05-09

申请人： Haruo Nakaji ,  Hidenao Fukuyama ,  Yuusuke Iso ,  Shinichi Urayama ,  Naoya Oishi ,  Hiroshi Fujiwara

发明人： Haruo Nakaji ,  Hidenao Fukuyama ,  Yuusuke Iso ,  Shinichi Urayama ,  Naoya Oishi ,  Hiroshi Fujiwara

IPC分类号： G01B9/02 ,  A61B5/00 ,  G01N21/47 ,  A61B10/00

CPC分类号： A61B5/0073 ,  A61B10/0041 ,  G01B9/02091 ,  G01N21/4795

摘要： An optical tomography device 1 is provided as one capable of obtaining tomographic information of a measuring object with higher accuracy. In the optical tomography device 1, numerical apertures of reception fibers 12, 13 are different from each other. Therefore, the device has a configuration wherein the reception fibers 12, 13 receive two kinds of respective light beams with different solid angle distributions, whereby the device can also obtain angular information, in addition to intensity information of light emerging from a measuring object 100. As a result, the accuracy is enhanced for an analysis about the tomographic information of the measuring object.

摘要翻译： 光学断层摄影装置1被提供为能够以更高精度获得测量对象的断层图像信息的装置。 在光学断层摄影装置1中，接收光纤12,13的数值孔径彼此不同。 因此，该装置具有其中接收光纤12,13接收具有不同立体角分布的两种各自的光束的配置，由此除了从测量对象100出射的光的强度信息之外，该装置还可以获得角度信息。 因此，对于关于测量对象的断层信息的分析，精度被增强。

公开(公告)号：US20110102776A1

公开(公告)日：2011-05-05

申请号：US12995252

申请日：2009-05-25

申请人： Takemi Hasegawa ,  Tetsuya Hayashi ,  Haruo Nakaji

发明人： Takemi Hasegawa ,  Tetsuya Hayashi ,  Haruo Nakaji

IPC分类号： G01M11/00

CPC分类号： G01M11/3136 ,  G01M11/3145

摘要： An optical line monitoring apparatus and optical line monitoring system which can measure a reflectance distribution in an optical line with a high spatial resolution in a short time are provided. An optical line monitoring apparatus 14A provided in a station 10A comprises an OCDR measurement section 15 for carrying out OCDR measurement, an OTDR measurement section 16 for carrying out OTDR measurement, an optical switch 13 for selectively connecting one of the OCDR measurement section 15 and OTDR measurement section 16 to the optical coupler 12, a control section 17, and a storage device 18. The control section 17 performs a predetermined arithmetic operation according to an OCDR measurement result acquired by causing the OCDR measurement section 15 to carry out the OCDR measurement and an OTDR measurement result acquired by causing the OTDR measurement section 16 to carry out the OTDR measurement.

摘要翻译： 提供了一种能够在短时间内以高空间分辨率测量光线路中的反射率分布的光线路监视装置和光线路监视系统。 设置在站10A中的光线路监视装置14A包括用于执行OCDR测量的OCDR测量部分15，用于执行OTDR测量的OTDR测量部分16，用于选择性地连接OCDR测量部分15和OTDR之一的光开关13 测量部分16到光耦合器12，控制部分17和存储装置18.控制部分17根据通过使OCDR测量部分15执行OCDR测量而获得的OCDR测量结果执行预定的算术运算，并且 通过使OTDR测量部16执行OTDR测量而获得的OTDR测量结果。

公开(公告)号：US07760423B2

公开(公告)日：2010-07-20

申请号：US11489725

申请日：2006-07-20

申请人： Shinobu Tamaoki ,  Toshihiko Kishimoto ,  Haruo Nakaji

发明人： Shinobu Tamaoki ,  Toshihiko Kishimoto ,  Haruo Nakaji

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/1301 ,  H01S3/06754 ,  H01S3/10015

摘要： The present invention relates to an optical amplifier with a structure for more effectively suppressing the over/undershoot in transient responses in high-speed AGC. This optical amplifier is an optical device for amplifying signal light inputted therein, and comprises a rare-earth-element-doped optical fiber, an optical coupler, a light-receiving section, a pumping light source, and a control section. In particular, as a typical structure of the optical amplifier, the rare-earth-element-doped optical fiber has a cutoff wavelength λc set longer than the pumping light wavelength λp but shorter than the signal light wavelength λs, and mainly allows a pumping light component in a fundamental mode to propagate therethrough. The pumping light and signal light are made incident on the first rare-earth-element-doped optical fiber such that only the pumping light component in the fundamental mode and a signal light component in the fundamental mode propagate through the first rare-earth-element-doped optical fiber in a state where the first rare-earth-element-doped optical fiber extends straight.

摘要翻译： 本发明涉及具有更有效地抑制高速AGC中的瞬态响应中的过冲/下冲的结构的光放大器。 该光放大器是用于放大其中输入的信号光的光学装置，并且包括稀土元素掺杂光纤，光耦合器，光接收部，泵浦光源和控制部。 特别地，作为光放大器的典型结构，稀土元素掺杂光纤具有比泵浦光波长λp长但短于信号光波长λs的截止波长λc，并且主要允许泵浦光 分量在基本模式中传播。 泵浦光和信号光入射到第一稀土元素掺杂光纤上，使得只有基模中的泵浦光分量和基模中的信号光分量通过第一稀土元素 掺杂光纤在第一稀土元素掺杂光纤直线延伸的状态下。

公开(公告)号：US06661570B2

公开(公告)日：2003-12-09

申请号：US10025574

申请日：2001-12-26

申请人： Haruo Nakaji

发明人： Haruo Nakaji

IPC分类号： H01S300

CPC分类号： H04B10/2942 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1301 ,  H04B10/296

摘要： The present invention relates to an optical amplifier and the like comprising a structure for effectively suppressing transient output signal power fluctuations caused by delays in control. The optical amplifier including an amplification optical fiber comprises a control system (17) for monitoring, through a light-receiving device, power fluctuations in part of light tapped by a branching device and regulating the power of pumping light outputted from a pumping light source. A delay medium is disposed between the branching device and the amplification optical fiber, so as to reduce the difference between the time required for signals transmitted through the branching device to reach the input end of the amplification optical fiber and the response time of the control system, thereby suppressing fluctuations in the output signal level.

公开(公告)号：US06396625B1

公开(公告)日：2002-05-28

申请号：US09791764

申请日：2001-02-26

申请人： Haruo Nakaji

发明人： Haruo Nakaji

IPC分类号： H01S300

CPC分类号： H04B10/2942 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1301

摘要： The present invention relates to an optical amplifier and the like comprising a structure for effectively suppressing transient output signal power fluctuations caused by delays in control. The optical amplifier including an amplification optical fiber comprises a control system for monitoring, through a light-receiving device, power fluctuations in part of light tapped by a branching device and regulating the power of pumping light outputted from a pumping light source. A delay medium is disposed between the branching device and the amplification optical fiber, so as to reduce the difference between the time required for signals transmitted through the branching device to reach the input end of the amplification optical fiber and the response time of the control system, thereby suppressing fluctuations in the output signal level. In particular, the delay medium has an insertion loss of 3 dB or less in order to minimize the loss at the input end of the amplification optical fiber so as to ameliorate noise figure.

摘要翻译： 本发明涉及一种光放大器等，其包括用于有效地抑制由控制延迟引起的瞬态输出信号功率波动的结构。 包括放大光纤的光放大器包括控制系统，用于通过光接收装置监视由分支装置抽头的一部分光的功率波动，并调节从泵浦光源输出的泵浦功率。 延迟介质设置在分支装置和放大光纤之间，以便减少通过分支装置传输的信号到达放大光纤的输入端所需的时间与控制系统的响应时间之间的差异 从而抑制输出信号电平的波动。 特别地，延迟介质具有3dB以下的插入损耗，以便使放大光纤的输入端的损耗最小化，以便改善噪声系数。