公开(公告)号：US06927913B2

公开(公告)日：2005-08-09

申请号：US10417251

申请日：2003-04-17

申请人： Michiko Takushima ,  Tomomi Sano ,  Hiroshi Suganuma ,  Tatsuhiko Tanaka

发明人： Michiko Takushima ,  Tomomi Sano ,  Hiroshi Suganuma ,  Tatsuhiko Tanaka

IPC分类号： G02F1/09 ,  G02B6/34 ,  G02F1/31 ,  H04B10/00 ,  H04B10/27 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02 ,  G02B27/44 ,  G02B5/18

CPC分类号： G02B6/272 ,  G02B6/276 ,  G02B6/29311 ,  H04J14/02

摘要： An optical signal processing apparatus has a diffraction grating element, first condenser lens, Faraday rotation elements, polarization beam splitter, λ/2 plate, second condenser lens, third condenser lens, and diffraction grating element. The magnitude of a magnetic field of each of the Faraday rotation elements is controlled on the basis of an externally input control signal. The rotation angle of the plane of polarization of signal light is set to 0 or λ/2 in accordance with the magnitude of the magnetic field. Each Faraday rotation element receives signal light having wavelengths λ1 to λ4, which has arrived from the first condenser lens, and outputs the signal light as a polarized light component in the first azimuth (parallel to the z-axis direction) or second azimuth (parallel to the y-axis direction).

摘要翻译： 光信号处理装置具有衍射光栅元件，第一聚光透镜，法拉第旋转元件，偏振光束分离器，λ/ 2板，第二聚光透镜，第三聚光透镜和衍射光栅元件。 基于外部输入的控制信号来控制每个法拉第旋转元件的磁场的大小。 信号光的偏振面的旋转角度根据磁场的大小被设定为0或λ/ 2。 每个法拉第旋转元件接收从第一聚光透镜到达的波长λ1至λ4λ的信号光，并将信号光作为偏振光分量输出到 第一方位（平行于z轴方向）或第二方位角（平行于y轴方向）。

公开(公告)号：US06823114B2

公开(公告)日：2004-11-23

申请号：US10386605

申请日：2003-03-13

申请人： Michiko Takushima ,  Tomomi Sano ,  Hiroshi Suganuma ,  Tatsuhiko Tanaka

发明人： Michiko Takushima ,  Tomomi Sano ,  Hiroshi Suganuma ,  Tatsuhiko Tanaka

IPC分类号： G02B634

CPC分类号： G02B6/2931 ,  G02B6/2938

摘要： This invention provides an optical signal processing apparatus capable of size reduction. When signal light with multiple wavelengths &lgr;1 to &lgr;4 is collimated by and output from a fiber collimator, the signal light components with multiple wavelengths &lgr;1 to &lgr;4 are diffracted by a diffraction grating at diffraction angles corresponding to the wavelengths and separated for the respective wavelengths. The separated signal light components of the respective wavelengths are output to spatially different optical paths. The signal light components having the wavelengths &lgr;n are deflected at their optical paths by prisms to increase the optical path interval and then input to fiber collimators.

摘要翻译： 本发明提供能够减小尺寸的光信号处理装置。 当具有多个波长λ1至λ4的信号光由光纤准直仪准直和输出时，具有多个波长λ1至λ4的信号光分量被衍射光栅衍射，衍射光栅以对应于波长的衍射角衍射并为各波长分离。 各个波长的分离的信号光分量输出到空间不同的光路。 具有波长lambdan的信号光分量在其光路上由棱镜偏转以增加光程间隔，然后输入到光纤准直仪。

公开(公告)号：US06823106B2

公开(公告)日：2004-11-23

申请号：US10260404

申请日：2002-10-01

申请人： Michiko Takushima ,  Hiroshi Suganuma ,  Tomomi Sano ,  Masakazu Shigehara

发明人： Michiko Takushima ,  Hiroshi Suganuma ,  Tomomi Sano ,  Masakazu Shigehara

IPC分类号： G02B628

CPC分类号： G02B6/29307 ,  G02B6/272 ,  G02B6/2773 ,  G02B6/2931 ,  G02B6/29313 ,  G02B6/2938 ,  G02B6/29395

摘要： The present invention relates to an optical multiplexer/demultiplexer. In the multiplexer/demultiplexer, a first grating receives to diffract a multi-wavelength light signal from a first port into light signals with different wavelengths. A second grating diffracts these light signals towards second ports. The second grating is disposed parallel with the first grating. The second grating has the same grating interval and grating direction as the first grating. The light signals diffracted by the second grating travel parallel with each other. Therefore, the light signals can efficiently enter the second ports without sophisticated lens design and adjustment of the optical system.

摘要翻译： 本发明涉及一种光复用器/解复用器。 在多路复用器/解复用器中，第一光栅接收将来自第一端口的多波长光信号衍射成具有不同波长的光信号。 第二光栅将这些光信号衍射到第二端口。 第二光栅与第一光栅平行设置。 第二光栅具有与第一光栅相同的光栅间隔和光栅方向。 由第二光栅衍射的光信号彼此平行行进。 因此，光信号可以有效地进入第二端口，而无需光学系统的复杂的透镜设计和调整。

公开(公告)号：US06810170B2

公开(公告)日：2004-10-26

申请号：US10458374

申请日：2003-06-11

申请人： Michiko Takushima ,  Tomomi Sano ,  Hiroshi Suganuma

发明人： Michiko Takushima ,  Tomomi Sano ,  Hiroshi Suganuma

IPC分类号： G02B628

CPC分类号： G02B6/29307 ,  G02B6/29313 ,  G02B6/2938

摘要： Light output from the distal end of an optical fiber collimator is input to a first diffraction grating formed on a first surface of a transparent member, and diffracted by the first diffraction grating at angles corresponding to wavelengths, and thus wavelength-branched. The light components of the respective wavelengths branched by the first diffraction grating and having propagated through the transparent member, are diffracted by a second diffraction grating formed on a second surface of the transparent member, and output from the transparent member. Each of the light components of the respective wavelengths, which are diffracted by the second diffraction grating and output from the transparent member, is input to the distal end of a corresponding one of optical fiber collimators, focused, and propagates through the optical fiber.

摘要翻译： 从光纤准直器的远端输出的光输入到形成在透明构件的第一表面上的第一衍射光栅，并由第一衍射光栅以对应于波长的角度衍射，因此波长分支。 由第一衍射光栅分支且已经透过透明构件的各波长的光分量被形成在透明构件的第二表面上的第二衍射光栅衍射，并从透明构件输出。 通过第二衍射光栅衍射并从透明构件输出的各个波长的每个光分量被输入到相应的一个光纤准直器的远端，聚焦并且传播通过光纤。

公开(公告)号：US06665472B2

公开(公告)日：2003-12-16

申请号：US09964839

申请日：2001-09-28

申请人： Michiko Takushima ,  Masakazu Shigehara ,  Hiroshi Suganuma

发明人： Michiko Takushima ,  Masakazu Shigehara ,  Hiroshi Suganuma

IPC分类号： G02B634

CPC分类号： G02B6/0208 ,  G02B6/02095 ,  G02B6/29319

摘要： An optical filter has a first long-period grating and a second long-period grating formed in a unitary optical fiber. A difference is not less than 100 nm between a wavelength at which optical coupling is maximum between core-mode light and cladding-mode light of a predetermined mode number in the first long-period grating and a wavelength at which optical coupling is maximum between core-mode light and cladding-mode light of the same mode number as the cladding-mode light of the predetermined mode number, in the second long-period grating. This optical filter can be constructed in compact size and can readily implement a desired transmission characteristic.

摘要翻译： 滤光器具有形成在单一光纤中的第一长周期光栅和第二长周期光栅。 核心模式光与第一长周期光栅中的预定模数的包层模式光之间的光耦合最大的波长与核心之间的光耦合最大的波长的差别不小于100nm 在第二长周期光栅中具有与预定模数的包层模式光相同模数的模光和包层模光。 该滤光器可以构造成紧凑的尺寸并且可以容易地实现期望的传输特性。

公开(公告)号：US06892003B2

公开(公告)日：2005-05-10

申请号：US10114321

申请日：2002-04-03

申请人： Makoto Katayama ,  Toshiaki Okuno ,  Masayuki Nishimura ,  Tomomi Sano ,  Masakazu Shigehara ,  Hiroshi Suganuma ,  Toru Iwashima ,  Tomohiko Kanie

发明人： Makoto Katayama ,  Toshiaki Okuno ,  Masayuki Nishimura ,  Tomomi Sano ,  Masakazu Shigehara ,  Hiroshi Suganuma ,  Toru Iwashima ,  Tomohiko Kanie

IPC分类号： H04B10/18 ,  G02B6/26 ,  G02B6/35 ,  H04J14/02

CPC分类号： H04B10/25133

摘要： An optical signal, which is to become the subject of dispersion compensation, is split by optical combining/splitting unit 2, and each frequency component of the optical signal that is split is reflected by the corresponding reflective mirror 30 included in reflective mirror group 3 to apply a predetermined phase shift to the respective frequency components Each reflected frequency component is then combined using optical combining/splitting unit 2, to give dispersion compensated optical signal Furthermore, in regards to reflective mirror group 3, which is used to apply phase shift to each frequency component of an optical signal, each of the respective plurality of reflective mirrors 30 is made a movable mirror having a movable reflection position that reflects the frequency components. Through this, dispersion that develops in an optical signal may be compensated with favorable controllability and high accuracy. Therefore, the precision and controllability of dispersion compensation will become superior, and realized is a variable dispersion compensator having a miniaturized optical circuit, and an optical transmission system comprising such variable dispersion compensator,

摘要翻译： 要成为色散补偿的对象的光信号被光学合成/分离单元2分离，并且被分离的光信号的每个频率分量被包括在反射镜组3中的相应的反射镜30反射到 对相应的频率分量施加预定的相移。然后使用光学合成/分离单元2组合每个反射频率分量，以产生色散补偿的光信号。此外，关于反射镜组3，其用于将相移施加到每个 光信号的频率分量，各个反射镜30中的每一个被制成具有反映频率分量的可移动反射位置的可移动反射镜。 由此，可以以良好的可控性和高精度补偿在光信号中产生的色散。 因此，色散补偿的精度和可控性将变得更好，并且实现了具有小型化光电路的可变色散补偿器和包括这种可变色散补偿器的光传输系统，

公开(公告)号：US06724539B2

公开(公告)日：2004-04-20

申请号：US10281309

申请日：2002-10-28

申请人： Tamoya Kenmochi ,  Hiroshi Suganuma ,  Tomomi Sano ,  Tetsuya Iimura

发明人： Tamoya Kenmochi ,  Hiroshi Suganuma ,  Tomomi Sano ,  Tetsuya Iimura

IPC分类号： G02B2714

CPC分类号： G02B6/29349 ,  G02B6/29386

摘要： The light which is input from an optical fiber to a first port is output to an optical path. The light which is input from the optical path to a half mirror is branched into two, and is output to the optical paths. The light which is output to the optical path reaches to and is reflected from a first reflecting mirror, and returns to the half mirror by an optical path. The light which is input to the half mirror by the optical path is branched into two, and is output to the optical paths. The light which is output to the optical path reaches to and is reflected from a second reflecting mirror, and returns to the half mirror by an optical path. The light which is input to the half mirror by the optical path is branched into two, and is output to the optical paths. The light which is output to the optical path is output from a second port to an optical fiber, and the light which is output to the optical path is output from a third port to an optical fiber.

摘要翻译： 从光纤输入到第一端口的光被输出到光路。 从光路输入到半反射镜的光被分支为两个，并被输出到光路。 输出到光路的光到达并被第一反射镜反射，并通过光路返回到半反射镜。 通过光路输入到半反射镜的光被分支为两个，并被输出到光路。 输出到光路的光到达并被第二反射镜反射，并通过光路返回到半反射镜。 通过光路输入到半反射镜的光被分支为两个，并被输出到光路。 输出到光路的光从第二端口输出到光纤，并且输出到光路的光从第三端口输出到光纤。

公开(公告)号：US20050013007A1

公开(公告)日：2005-01-20

申请号：US10499038

申请日：2002-12-10

申请人： Tomomi Sano ,  Hiroshi Suganuma ,  Tamoya Kenmochi

发明人： Tomomi Sano ,  Hiroshi Suganuma ,  Tamoya Kenmochi

IPC分类号： G02B5/30 ,  H04J14/02 ,  H04J14/06 ,  G02B27/14

CPC分类号： G02B5/3083 ,  H04J14/02 ,  H04J14/06

摘要： In a polarized wave interleaver 100, signal light of a first wavelength band Λ1 of polarized light component in a first orientation, which enters an input port 111, proceeds to a first path P1 through a first polarized wave separation element 131. Even after passing through a wavelength filter 140, the polarized light component in the first orientation is maintained as it is. And the light proceeds to a third path P3 through a second polarized wave separation element 132, and is output from a first output port 121. Signal light of a second wavelength band Λ2 of polarized light component in a second orientation, which enters the input port 111, proceeds to a second path P2 through the first polarized wave separation element 131, and is converted to the polarized light component in the first orientation by the wavelength filter 140. And the light proceeds to a fourth path P4 through the second polarized wave separation element 132, and is output from a second output port 122. The wavelength filter 140 includes a first multi-refraction material 141, a second multi-refraction material 142 and a third multi-refraction material 143. The optical thickness of the three multi-refraction materials 141-143 has a predetermined ratio; and the orientation of the C axis falls within a predetermined range.

摘要翻译： 在偏振波交织器100中，进入输入端口111的第一取向的偏振光分量的第一波长带λ1的信号光通过第一偏振波分离元件131进入第一路径P1。 一个波长滤波器140，保持第一取向中的偏振光分量原样。 并且光通过第二偏振波分离元件132进入第三路径P3，并且从第一输出端口121输出。第二方向的偏振光分量的第二波长带λ2的信号光进入输入端口 111通过第一偏振波分离元件131进入第二路径P2，并通过波长滤波器140被转换成第一取向的偏振光分量。并且光通过第二偏振波分离进行到第四路径P4 元件132，并且从第二输出端口122输出。波长滤波器140包括第一多折射材料141，第二多折射材料142和第三多折射材料143.三个多折射材料141的光学厚度， 折射材料141-143具有预定比例; 并且C轴的取向落在预定范围内。

公开(公告)号：US06965479B2

公开(公告)日：2005-11-15

申请号：US10468895

申请日：2002-12-10

申请人： Tomomi Sano ,  Hiroshi Suganuma ,  Tamoya Kenmochi ,  Tetsuya Iimura ,  Manabu Shiozaki

发明人： Tomomi Sano ,  Hiroshi Suganuma ,  Tamoya Kenmochi ,  Tetsuya Iimura ,  Manabu Shiozaki

IPC分类号： G02B6/34 ,  G02B26/02 ,  G02B27/14 ,  G02G27/14 ,  G02F1/01 ,  G02F1/23 ,  G02G27/10

CPC分类号： G02B6/29349 ,  G02B6/29386 ,  G02B26/02 ,  G02B27/145

摘要： A first optical system (11) has a first beam splitter (211). The first beam splitter (211) splits light arriving through a first optical path (P1) into two light beams, and outputs one light beam to a second optical path (P2) and the other light beam to a third optical path (P3). A second optical system (21) outputs the light output from the first beam splitter (221) to the second optical path (P2) and arriving at the second optical system (21) upon giving the light an intensity change with wavelength dependence and a phase change, and has a second beam splitter (221), first reflecting mirror (223), and second reflecting mirror (222). This makes it possible to provide an optical filter (200) which can realize a characteristic excellent in isolation with a very simple arrangement.

摘要翻译： 第一光学系统（11）具有第一分束器（211）。 第一分束器（211）将通过第一光路（P 1）到达的光分成两个光束，并将一个光束输出到第二光路（P 2），将另一个光束输出到第三光路（P 3）。 第二光学系统（21）将从第一分束器（221）输出的光输出到第二光路（P 2），并且在给予光时具有波长依赖性的强度变化，并且到达第二光学系统 具有第二分束器（221），第一反射镜（223）和第二反射镜（222）。 这使得可以提供一种能够以非常简单的布置实现隔离性优异的光学滤波器（200）。

公开(公告)号：US06903884B2

公开(公告)日：2005-06-07

申请号：US10705848

申请日：2003-11-13

申请人： Tomomi Sano ,  Hiroshi Suganuma ,  Tatsuhiko Tanaka

发明人： Tomomi Sano ,  Hiroshi Suganuma ,  Tatsuhiko Tanaka

IPC分类号： G02B7/182 ,  G02B7/02

CPC分类号： G02B7/182

摘要： An object of the present invention is to provide a fixing structure for an optical element, which structure enables easy adjustment of a direction of the optical element when the optical element is fixed to a substrate. In order to achieve this object, a fixing member 31 made of metal is fixed to a substrate such that the fixing member holds an optical element therein and the bottom surface of the fixing member is spherical so that the spherical bottom surface touches the edge of the opening of a fixing portion on the substrate. The fixing member holds the optical element. A part of the surface of the fixing member is spherical such that the spherical part of the surface touches the edge of the opening of a fixing portion on the substrate. An optical device in which an optical element is fixed to a substrate with the fixing member mentioned above is also provided.

摘要翻译： 本发明的目的是提供一种用于光学元件的固定结构，该结构能够在将光学元件固定到基板上时容易地调节光学元件的方向。 为了实现这个目的，将由金属制成的固定构件31固定到基板上，使得固定构件在其中保持光学元件，并且固定构件的底表面是球形的，使得球形底表面接触 在基板上打开固定部分。 固定构件保持光学元件。 固定构件的表面的一部分是球形的，使得表面的球形部分接触基板上的固定部分的开口的边缘。 还提供了一种光学元件，其中通过上述固定构件将光学元件固定到基板。