公开(公告)号：US20060056586A1

公开(公告)日：2006-03-16

申请号：US11206770

申请日：2005-08-19

申请人： Naohito Uetake ,  Young-kun Lee ,  Shigehisa Tanaka

发明人： Naohito Uetake ,  Young-kun Lee ,  Shigehisa Tanaka

IPC分类号： G01N23/04

CPC分类号： G01V5/0033 ,  G01N21/3563 ,  G01N21/3581 ,  G01V3/30

摘要： A method and equipment for detecting an explosive, etc. are disclosed. A specified portion highly likely to contain an explosive, etc. is extracted based on the X-ray image obtained by radiating an X ray on an object to be inspected. An electromagnetic wave containing the terahertz wave is radiated on the specified portion thus extracted. The presence or absence of the explosive, etc. is determined based on at least one of the absorption spectrum and the reflection spectrum of the electromagnetic wave at the specified portion.

摘要翻译： 公开了一种用于检测炸药等的方法和设备。 基于通过将X射线照射在待检查对象上而获得的X射线图像，提取非常容易含有爆炸物等的指定部分。 包含太赫兹波的电磁波被辐射在由此提取的指定部分上。 基于指定部分的电磁波的吸收光谱和反射光谱中的至少一个来确定爆炸物的存在或不存在等。

公开(公告)号：US06731846B2

公开(公告)日：2004-05-04

申请号：US09941697

申请日：2001-08-30

申请人： Kazuhiko Hosomi ,  Toshio Katsuyama ,  Young-kun Lee ,  Masahiro Ojima

发明人： Kazuhiko Hosomi ,  Toshio Katsuyama ,  Young-kun Lee ,  Masahiro Ojima

IPC分类号： G02B602

CPC分类号： G02F1/035 ,  B82Y20/00 ,  G02B6/1225 ,  G02B6/29317 ,  G02B6/29394 ,  G02B6/29395 ,  G02F2202/32

摘要： The present invention aims to provide a dispersion compensator which is ultra small in size and low in cost and capable of controlling dispersion compensating values, and an optical transmission system using the dispersion compensator. A dispersion property of light that propagates through defects in a photonic crystal, is used to compensate for each wavelength dispersion. A dispersion compensator comprises a dispersion-compensating-waveguide array in which a plurality of dispersion compensating waveguides having dispersion compensating values different from one another are placed, a drive unit for driving the dispersion-compensating-waveguide array, and optical fibers for inputting/outputting a light signal. Each of the dispersion compensating waveguides comprises regular waveguides and a waveguide made of defects in photonic crystal. The lengths of the waveguides made of the defects in photonic crystal are changed one by one to make dispersion compensating values different from one another.

摘要翻译： 本发明旨在提供一种尺寸超小，成本低且能够控制色散补偿值的色散补偿器，以及使用该色散补偿器的光传输系统。 使用通过光子晶体中的缺陷传播的光的分散特性来补偿每个波长色散。 色散补偿器包括色散补偿波导阵列，其中放置了具有彼此不同的色散补偿值的多个色散补偿波导，用于驱动色散补偿波导阵列的驱动单元和用于输入/输出的光纤 一个光信号。 每个色散补偿波导包括规则波导和由光子晶体中的缺陷制成的波导。 由光子晶体中的缺陷构成的波导的长度逐一变化，使得色散补偿值彼此不同。