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33 条记录 (耗时 0.018 秒)

    Optical multi/demultiplexer and optical module using the same
    1.
    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 receiving method utilizing polarization diversity and apparatus for carrying out the same
    2.
    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 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。

    Polymer waveguides and process for producing the same
    8.
    发明授权
    Polymer waveguides and process for producing the same 失效

    公开(公告)号：US07035518B2

    公开(公告)日：2006-04-25

    申请号：US10102963

    申请日：2002-03-22

    申请人： Katsuyuki Imoto

    发明人： Katsuyuki Imoto

    IPC分类号： G02B6/10

    CPC分类号： G02B6/138

    摘要： In a polymer waveguide comprising a cladding layer with a low refractive index and a core layer with a high refractive index of a substantially rectangular section covered with the cladding layer, the core layer and a side cladding layer constituting the cladding layer in its portion located on both sides of the core layer are formed of a material comprising a branched polysilane compound containing a silicone compound. By virtue of this constitution, the polymer waveguide has a low loss and causes no significant change in optical characteristics upon a change in ambient temperature.

    Rare earth element-doped optical fiber amplifier
    9.
    发明授权
    Rare earth element-doped optical fiber amplifier 失效
    稀土元素掺杂光纤放大器

    公开(公告)号：US5706124A

    公开(公告)日：1998-01-06

    申请号：US629593

    申请日：1996-04-09

    申请人： Katsuyuki Imoto ,  Kazuo Koya ,  Jun Abe

    发明人： Katsuyuki Imoto ,  Kazuo Koya ,  Jun Abe

    IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  H01S3/10 ,  H01S3/16 ,  H01S3/17 ,  H01S3/30 ,  G02B6/26

    CPC分类号： H04B10/2912 ,  H01S3/06754 ,  H04B10/291 ,  H04B10/294 ,  H01S2301/02 ,  H01S2301/04 ,  H01S3/094096 ,  H01S3/1608

    摘要： An Er-doped multiple-core optical fiber amplifier has an Er-doped multiple-core optical fiber. A signal light of 1.5 .mu.m wavelength band is input through an optical isolator at front stage, and excitation lights of 0.98 .mu.m or 1.48 .mu.m wavelength emitted from excitation light sources are injected through a WDM coupler at front stage and a WDM coupler at rear stage, respectively. An amplified signal light is output through optical isolator at rear stage. A length L.sub.M of the Er-doped multiple-core optical fiber is set to obtain a substantially maximum saturated output power of the amplified signal light.

    摘要翻译： 掺铒多芯光纤放大器具有掺铒多芯光纤。 通过前级光隔离器输入波长1.5μm的信号光，激发光源发射的0.98μm或1.48μm波长的激发光通过前级的WDM耦合器和WDM耦合器注入 后期。 放大后的信号光通过光隔离器输出。 Er掺杂多芯光纤的长度LM被设定为获得放大的信号光的基本上最大的饱和输出功率。