利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

29 条记录 (耗时 0.027 秒)

    Optical receiving method utilizing polarization diversity and apparatus for carrying out the same
    1.
    发明授权
    Optical receiving method utilizing polarization diversity and apparatus for carrying out the same 失效
    利用极化分集的光接收方法及其执行装置

    公开(公告)号：US5140453A

    公开(公告)日：1992-08-18

    申请号：US166984

    申请日：1988-03-11

    申请人： Hideaki Tsushima ,  Katsuyuki Imoto ,  Hirohisa Sano ,  Akihiko Takase ,  Yoshitaka Takasaki ,  Minoru Maeda

    发明人： Hideaki Tsushima ,  Katsuyuki Imoto ,  Hirohisa Sano ,  Akihiko Takase ,  Yoshitaka Takasaki ,  Minoru Maeda

    IPC分类号： H04B10/148

    CPC分类号： H04B10/61 ,  H04B10/614 ,  H04B10/64

    摘要： An optical receiving method utilizing polarization diversity is disclosed in which first and second reference lightwaves having different frequencies and having polarization planes substantially perpendicular to each other, are combined with a signal lightwave to form a combined lightwave. The combined lightwave is subjected to heterodyne detection to obtain a detection signal and the detection signal is separated into first and second intermediate-frequency signals having different carrier frequencies. The first and second intermediate-frequency signals are converted into first and second baseband signals, respectively, and the first and second baseband signals are added to obtain an output signal.

    摘要翻译： 公开了一种利用极化分集的光接收方法，其中具有不同频率的第一和第二参考光波具有彼此基本垂直的偏振面，与信号光波组合以形成组合的光波。 对组合的光波进行外差检测以获得检测信号，并将检测信号分离成具有不同载波频率的第一和第二中频信号。 第一和第二中频信号分别转换为第一和第二基带信号，并且相加第一和第二基带信号以获得输出信号。

    Optical multi/demultiplexer and optical module using the same
    2.
    发明授权
    Optical multi/demultiplexer and optical module using the same 失效
    光学多路复用器和光模块使用相同

    公开(公告)号：US4909584A

    公开(公告)日：1990-03-20

    申请号：US204551

    申请日：1988-03-23

    申请人： Katsuyuki Imoto ,  Hirohisa Sano ,  Hideaki Tsushima

    发明人： Katsuyuki Imoto ,  Hirohisa Sano ,  Hideaki Tsushima

    IPC分类号： G02B6/125 ,  G02B6/28 ,  G02B6/34 ,  H04B10/25

    CPC分类号： G02B6/12007 ,  G02B6/125 ,  G02B6/2821 ,  G02B6/29355 ,  G02B6/2938 ,  G02B6/4246 ,  H04B10/2504

    摘要： This invention relates to an optical multi/demultiplexer which will be useful for optical wavelength-division multiplexing communication using an optical fiber.In order to obtain high isolation, the optical multi/demultiplexer of the present invention constitutes three, mutually the same optical multi/demultiplexers by use of a main waveguide and first, second and third branch waveguides. Two rays of light having mutually different wavelenths, which are incident into the main waveguide, are isolated completely by the three optical multi/demultiplexers and are outputted.

    摘要翻译： PCT No.PCT / JP87 / 00969 Sec。 371日期：1988年3月23日 102（e）1988年3月23日PCT PCT公开1987年12月11日PCT公布。 出版物WO88 / 04785 日期：1988年6月30日。本发明涉及对于使用光纤的光波分复用通信有用的光多路复用器。 为了获得高隔离度，本发明的光学多路复用/多路分离器通过使用主波导和第一，第二和第三分支波导构成三个相互相同的光学多路/多路分离器。 入射到主波导中的具有相互不同的波长的两束光线被三个光学多路/解复用器完全隔离，并被输出。

    Optical filter and optical device using same
    4.
    发明授权
    Optical filter and optical device using same 失效
    滤光片及使用其的光学元件

    公开(公告)号：US4790614A

    公开(公告)日：1988-12-13

    申请号：US929911

    申请日：1986-11-13

    申请人： Katsuyuki Imoto ,  Hirohisa Sano ,  Minoru Maeda

    发明人： Katsuyuki Imoto ,  Hirohisa Sano ,  Minoru Maeda

    IPC分类号： G02B6/10 ,  G02B6/124 ,  G02B6/34 ,  G02B6/42

    CPC分类号： G02B6/12007 ,  G02B6/10 ,  G02B6/124 ,  G02B6/29364 ,  G02B6/4246 ,  G02B2006/12109

    摘要： An optical filter is formed by providing a plurality of gaps, which have a desired width and such a depth that is larger than the thickness of the waveguide layer, in a slab or a waveguide layer in a three-dimensional optical waveguide so as to extend in the light propagating direction at desired period intervals. These gaps are filled with a film of a material, the refractive index of which is different from that of the waveguide layer, to complete the optical filter. A multiplex wavelength transmission device is formed monolithically by providing at least one optical filter, which is formed in the above-mentioned manner, in an optical waveguide, and arranging one or both of a light-emitting semiconductor element and a photodetector on the side of an optical signal which has passed through the optical filter, and on the side of an optical signal which has been reflected on the same optical filter.

    摘要翻译： 通过在三维光波导中的板或波导层中提供多个间隙，其形成具有期望宽度和比波导层的厚度大的深度的多个间隙，以便延伸 在光传播方向上以期望的周期间隔。 这些间隙填充有折射率不同于波导层的材料的膜，以完成滤光器。 通过在光波导中设置至少一个以上述方式形成的滤光器，并且将发光半导体元件和光电检测器中的一个或两个布置在 已经通过滤光器的光信号，以及已经在同一滤光器上反射的光信号的一侧。

    Optical fiber star coupler and method of manufacturing the same
    7.
    发明授权
    Optical fiber star coupler and method of manufacturing the same 失效
    光纤星形耦合器及其制造方法

    公开(公告)号：US4822128A

    公开(公告)日：1989-04-18

    申请号：US919635

    申请日：1986-10-16

    申请人： Katsuyuki Imoto ,  Hirohisa Sano

    发明人： Katsuyuki Imoto ,  Hirohisa Sano

    IPC分类号： B29D11/00 ,  G02B6/28

    CPC分类号： B29D11/00663 ,  G02B6/2856

    摘要： While a middle part of a plastic optical fiber bundle in a lengthwise direction thereof is being heated, it is twisted, and it is pulled in axial directions of the bundle. A biconically tapered portion is formed at the middle part of the bundle by the twisting and the pulling. When the biconically tapered portion has been formed into a predetermined shape, the heating is stopped, and simultaneously, a gas is blown against an outer periphery of the biconically tapered portion so as to rapidly cool this tapered portion. The biconically tapered portion is solidified to the predetermined shape by the rapid cooling.

    摘要翻译： 当塑料光纤束在其长度方向上的中间部分被加热时，其被扭转，并且沿着该束的轴向被拉动。 通过扭转和拉动在束的中间部分处形成双锥形部分。 当双锥形部分已经形成预定的形状时，停止加热，并且同时将气体吹向双锥形部分的外周，以便快速冷却该锥形部分。 双锥形部分通过快速冷却固化成预定形状。

    Optical crossconnect apparatus and optical transmission system
    8.
    发明授权
    Optical crossconnect apparatus and optical transmission system 失效
    光交叉连接装置和光传输系统

    公开(公告)号：US07272314B2

    公开(公告)日：2007-09-18

    申请号：US10924976

    申请日：2004-08-25

    申请人： Yasuyuki Fukashiro ,  Yukio Hayashi ,  Shigeki Kitajima ,  Tatsuo Kanetake ,  Masahiro Takatori ,  Shoichi Hanatani ,  Hirohisa Sano

    发明人： Yasuyuki Fukashiro ,  Yukio Hayashi ,  Shigeki Kitajima ,  Tatsuo Kanetake ,  Masahiro Takatori ,  Shoichi Hanatani ,  Hirohisa Sano

    IPC分类号： H04J14/00

    CPC分类号： H04B10/032 ,  H04Q11/0001 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0024 ,  H04Q2011/0043 ,  H04Q2011/0058 ,  H04Q2011/0081

    摘要： An optical crossconnect apparatus which includes one terminal connected to a transmission path from one optical transmission terminal station and another terminal connected to a transmission path from another optical transmission terminal station, a first optical signal switch having “M1” ports and “N1” ports, through which the optical signal can pass, a second optical signal switch having “M2” ports and “N2” ports, through which the optical signal can pass, and “L” optical signal repeaters, one end connected to the “N1” ports of the first optical signal switch, and the other end connected to the “N2” ports of the second optical switch. The “N1” and the “N2” ports are equal to “L” optical signal repeaters. The “M1” ports of the first optical signal switch connected to the one terminal, and the “M2” ports of the second optical signal switch connected to the other terminal are larger than, or equal to 2.

    摘要翻译： 一种光交叉连接装置，包括连接到来自一个光传输终端站的传输路径的一个终端，以及连接到来自另一个光传输终端站的传输路径的另一终端，具有“M 1”端口的第一光信号交换机和“N 1” 光信号可以通过的端口，具有光信号可以通过的“M 2”端口和“N 2”端口的第二光信号交换机和“L”个光信号中继器，一端连接到“ N 1“端口，另一端连接到第二光开关的”N 2“端口。 “N 1”和“N 2”端口等于“L”个光信号中继器。 连接到一个端子的第一光信号开关的“M 1”端口和连接到另一个端子的第二光信号开关的“M 2”端口大于或等于2。

    Lumped element non-reciprocal circuit device
    9.
    发明申请
    Lumped element non-reciprocal circuit device 审中-公开
    集总元件不可逆电路器件

    公开(公告)号：US20060077016A1

    公开(公告)日：2006-04-13

    申请号：US11216055

    申请日：2005-09-01

    申请人： Yuta Sugiyama ,  Hideto Mikami ,  Hirohisa Sano

    发明人： Yuta Sugiyama ,  Hideto Mikami ,  Hirohisa Sano

    IPC分类号： H01P1/32

    CPC分类号： H01P1/387

    摘要： A lumped element non-reciprocal circuit device is downsized without an increase in an insertion loss. A lumped element non-reciprocal circuit device comprises a plurality of center electrodes; a microwave magnetic material; a permanent magnet; and a metal case that serves as a magnetic yoke, wherein the center electrode is disposed on a main surface of the microwave magnetic material, the microwave magnetic material has a side surface perpendicular to the main surface, and a shortest distance between the side surface of the microwave magnetic material and the metal case is set to be equal to or larger than a thickness of the microwave magnetic material and equal to or smaller than 2.3 times of the thickness of the microwave magnetic material.

    摘要翻译： 集中元件不可逆电路器件的尺寸小而不会增加插入损耗。 集总单元不可逆电路装置包括多个中心电极; 微波磁性材料; 永久磁铁 以及用作磁轭的金属壳体，其中所述中心电极设置在所述微波磁性材料的主表面上，所述微波磁性材料具有垂直于所述主表面的侧表面，并且所述微波磁性材料的侧表面之间的最短距离 微波磁性材料和金属壳被设定为等于或大于微波磁性材料的厚度并且等于或小于微波磁性材料的厚度的2.3倍。

    Optical waveguide apparatus
    10.
    发明申请
    Optical waveguide apparatus 失效
    光波导装置

    公开(公告)号：US20060153501A1

    公开(公告)日：2006-07-13

    申请号：US10535704

    申请日：2003-02-13

    申请人： Makoto Takahashi ,  Tatemi Ido ,  Hirohisa Sano ,  Nobuo Miyadera

    发明人： Makoto Takahashi ,  Tatemi Ido ,  Hirohisa Sano ,  Nobuo Miyadera

    IPC分类号： G02B6/26

    CPC分类号： G02B6/29368 ,  G02B6/2938

    摘要： The present invention provides an optical module using optical waveguides which permits easy fabrication of a PLC type optical multiplexer/demultiplexer with reduced loss. The optical module comprises cores which are contiguous to each other through a dicing groove adapted to position and fix an optical functional part such as a wavelength selection filter and a core branched from the said cores. A slight gap is present between the former and the latter core and both cores are narrower in width in the vicinity of the dicing groove than the other portions.

    摘要翻译： 本发明提供一种使用光波导的光学模块，其允许容易地制造具有降低的损耗的PLC型光复用器/解复用器。 光学模块包括通过适于定位和固定诸如波长选择滤光器和从所述芯分支的芯的光学功能部件的切割槽彼此连续的芯。 在前者和后一个芯之间存在轻微的间隙，并且两个芯在切割槽附近的宽度窄于其它部分。