公开(公告)号：US4756587A

公开(公告)日：1988-07-12

申请号：US84124

申请日：1987-08-12

申请人： Hirohisa Sano ,  Katsuyuki Imoto ,  Minoru Maeda

发明人： Hirohisa Sano ,  Katsuyuki Imoto ,  Minoru Maeda

IPC分类号： G02B6/12 ,  G02B6/34 ,  G02B6/42 ,  G02B6/10

CPC分类号： G02B6/2938 ,  G02B6/12002 ,  G02B6/12007 ,  G02B6/29337 ,  G02B6/42

摘要： An optical multi/demultiplexer comprising a first waveguide for inputting/outputting light, second and third waveguides which are respectively arranged on both sides of the first waveguide, and first and second open-waveguides which are respectively arranged on sides of the second and third waveguides remote from the first waveguide.

摘要翻译： 一种光学多路复用器，包括用于输入/输出光的第一波导，分别布置在第一波导的两侧的第二和第三波导以及分别布置在第二波导和第三波导的侧面上的第一和第二开放波导 远离第一个波导。

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。

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。

公开(公告)号：US4953934A

公开(公告)日：1990-09-04

申请号：US280855

申请日：1988-12-07

申请人： Katsuyuki Imoto ,  Hirohisa Sano ,  Masaru Miyazaki ,  Naoyuki Matsuoka ,  Hisato Uetsuka

发明人： Katsuyuki Imoto ,  Hirohisa Sano ,  Masaru Miyazaki ,  Naoyuki Matsuoka ,  Hisato Uetsuka

IPC分类号： G02B6/12 ,  G02B6/34 ,  G02F1/01 ,  G02F1/313

CPC分类号： G02F1/3132 ,  G02F1/0147

摘要： A waveguide type light merging and branching device, in which a resistance layer is disposed on a surface of a substrate or at least on one side therein and a low refractive index layer (refractive index n.sub.b), a core waveguide layer (refractive index n.sub.c, n.sub.c >n.sub.b), and a cladding layer (refractive index n.sub.n, n.sub.n >n.sub.c) superposed thereon on each other, the resistance layer having electrode terminals at the two extremities thereof, to which a voltage is applied.

摘要翻译： 一种波导型光合并分支装置，其中电阻层设置在基板的表面或其至少一侧，低折射率层（折射率nb），芯波导层（折射率nc， nc> nb）和叠置在其上的包层（折射率nn，nn> nc），所述电阻层在其两端具有施加电压的两端的电极端子。

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。

公开(公告)号：US4904037A

公开(公告)日：1990-02-27

申请号：US226014

申请日：1988-07-28

申请人： Katsuyuki Imoto ,  Hirohisa Sano ,  Yasuo Hira

发明人： Katsuyuki Imoto ,  Hirohisa Sano ,  Yasuo Hira

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/126

CPC分类号： G02B6/12007 ,  G02B6/122 ,  G02B6/126 ,  G02B2006/12169

摘要： A waveguide type optical device in which a waveguide layer for propagating light is provided on the front surface of a substrate, and a compensation layer having a coefficient of thermal expansion substantially equal to that of the waveguide layer formed on the front surface is provided on the rear surface of the substrate.

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。

公开(公告)号：US4842359A

公开(公告)日：1989-06-27

申请号：US130615

申请日：1987-12-09

申请人： Katsuyuki Imoto ,  Minoru Maeda ,  Masayoshi Kameyama ,  Yasushi Ikuta ,  Hiroshi Araki ,  Shigeru Oho

发明人： Katsuyuki Imoto ,  Minoru Maeda ,  Masayoshi Kameyama ,  Yasushi Ikuta ,  Hiroshi Araki ,  Shigeru Oho

IPC分类号： G02B6/28

CPC分类号： G02B6/2856 ,  G02B6/2835 ,  Y10S359/90

摘要： An optical star coupler having a biconically tapered optical star coupler suspensively inserted in a protection tube and the method for manufacturing the same are disclosed, and the manufacturing method is that an optical fiber bundle is inserted into a protection tube such as hollow glass tube, then the optical fiber bundle is twisted and pulled while it is indirectly heated through the protection tube, thereby to form a twisting, fusing and pulling portion, and both ends of the protection tube are sealed with an adhesive agent to fix the optical fiber bundle to the protection tube. This optical star coupler can be constructed so as to be connected in tandem without any splicing. The optical star coupler of the present invention, naturally in the case of an optical star coupler using multi-mode optical fiber, particularly in the case of one equally divided optical star coupler using single-mode optical fiber, also provides low insertion loss, less power deviation and low manufacturing cost.

公开(公告)号：US4726643A

公开(公告)日：1988-02-23

申请号：US772914

申请日：1985-09-05

申请人： Katsuyuki Imoto ,  Minoru Maeda ,  Masayoshi Kameyama ,  Yasushi Ikuta ,  Hiroshi Araki ,  Shigeru Oho

发明人： Katsuyuki Imoto ,  Minoru Maeda ,  Masayoshi Kameyama ,  Yasushi Ikuta ,  Hiroshi Araki ,  Shigeru Oho

IPC分类号： G02B6/28

CPC分类号： G02B6/2856 ,  G02B6/2835 ,  Y10S359/90

摘要： An optical star coupler having a biconically tapered optical star coupler inserted and suspended in a protection tube and the method for manufacturing the same are disclosed. The manufacturing method provides that an optical fiber bundle is inserted into a protection tube such as hollow glass tube, then the optical fiber bundle is twisted and pulled while it is indirectly heated through the protection tube, thereby forming a twisting, fusing and pulling portion. Both ends of the protection tube are then sealed with an adhesive agent to fix the optical fiber bundle to the protection tube. This optical star coupler can be constructed so as to be connected in tandem without any splicing. The optical star coupler of the present invention, in the case of an optical star coupler using multi-mode optical fibers, and particularly in the case of one equally divided optical star coupler using single-mode optical fiber, also provides low insertion loss, less power deviation and low manufacturing costs.

摘要翻译： 公开了一种具有插入并悬挂在保护管中的双锥形光学星形耦合器的光学星形耦合器及其制造方法。 制造方法是将光纤束插入到中空玻璃管​​等保护管中，然后在通过保护管间接加热的同时使光纤束被扭转拉动，从而形成扭转，熔接和拉出部。 然后用粘合剂密封保护管的两端，将光纤束固定在保护管上。 该光学星形耦合器可以构造成串联连接而不需要任何拼接。 在使用多模光纤的光学星形耦合器的情况下，特别是在使用单模光纤的一个等分的光学星形耦合器的情况下，本发明的光学星形耦合器也提供低的插入损耗 功率偏差和制造成本低。

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.