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277 条记录 (耗时 0.016 秒)

    Optical attenuator
    31.
    发明公开
    Optical attenuator 审中-公开
    光衰减器

    公开(公告)号：EP0959375A2

    公开(公告)日：1999-11-24

    申请号：EP99109802.1

    申请日：1999-05-19

    申请人： JDS FITEL INC.

    发明人： Cheng, Yihao

    IPC分类号： G02B6/27

    CPC分类号： G02B6/2848 ,  G02B6/266 ,  G02B6/272 ,  G02B6/2746 ,  G02B6/2773 ,  G02B6/2937 ,  G02B6/29394 ,  G02B6/32 ,  G02B27/283

    摘要： A polarization beam splitter combiner uses a birefringent crystal that is a fraction of the size of conventional crystals used in similar devices. Since the crystal is considerably shorter in length, the beam passing through the crystal can be uncollimated, spreading very little from one end to the other. Launching uncollimated beams through a short small crystal obviates the requirement for lenses at the end face of the crystal having two waveguides coupled thereto. Since lenses are not required the waveguides at the input/output end face can be very closely spaced apart. Conventional lensed devices utilizing a pair of lenses at an input/output end face must be considerably larger in order to accommodate the lenses and resulting collimated beams.

    OPTICAL ISOLATOR
    32.
    发明公开
    OPTICAL ISOLATOR 失效
    光学隔离器

    公开(公告)号：EP0941492A1

    公开(公告)日：1999-09-15

    申请号：EP97913526.0

    申请日：1997-11-29

    申请人： Samsung Electronics Co., Ltd.

    发明人： SONG, Young, Jin

    IPC分类号： G02B6 ,  G02B27 ,  G02F1

    CPC分类号： G02B6/2746 ,  G02F1/093

    摘要： An optical isolator capable of simultaneously transmitting a plurality (10) of light beams emitted from a plurality of optical fibers (12, 14) in one direction. The optical isolator includes a plurality (10; 70) of optical fibers (12, 14; 72, 74) for transmitting light beams, a pair of collimating lenses (20, 60) for converting the light beams emitted from or entered into the optical fibers into parallel light beams, a pair of symmetric birefringent elements (30, 50), having at least one tapered surface (32, 34; 52, 54), for emitting by polarization the plurality of parallel light beams having passed the collimating lenses (20, 60) and condensing all the light beams traveling in a forward direction onto the optical fibers, respectively, and a Faraday rotator (40), interposed between the birefringent elements (30, 50), for rotating the light beams incident thereto by 45°. A plurality of tapered faces (32, 34; 52, 54) having the same tapered angle (9) are formed on one surface of the birefringent element (30, 50), so that a plurality of light beams can be simultaneously transmitted in one direction.

    摘要翻译： 一种光学隔离器，能够在一个方向上同时发送从多根光纤（12,14）发射的多个（10）光束。 该光学隔离器包括用于传输光束的多个（10; 70）光纤（12,14; 72,74）;一对准直透镜（20,60），用于将从光学器件发射或进入光学器件 光纤变成平行光束;一对对称双折射元件（30,50），具有至少一个锥形表面（32,34; 52,54），用于通过偏振发射已经通过准直透镜的多个平行光束（ 并且将所有正向传播的光束分别聚集到光纤上，以及法拉第旋转器（40），插入在双折射元件（30,50）之间，用于将入射到其上的光束旋转45° °。 在双折射元件（30,50）的一个表面上形成具有相同锥角（9）的多个锥形面（32,34; 52,54），使得多个光束可以同时透射 方向。

    Optical circulator
    33.
    发明公开
    Optical circulator 有权
    Optischer Zirkulator

    公开(公告)号：EP0936489A2

    公开(公告)日：1999-08-18

    申请号：EP98117184.6

    申请日：1998-09-10

    申请人： Hewlett-Packard Company

    发明人： Sorin, Wayne V. ,  Baney, Douglas M.

    IPC分类号： G02F1/095

    CPC分类号： G02F1/093 ,  G02B6/2746

    摘要： An optical circulator having first, second, and third ports. The optical circulator includes a beam splitter and a plurality of Faraday stages. The beam splitter is connected to the first and third ports and separates a first light signal entering the first port into first and second outgoing light signals. The beam splitter also separates a second light signal entering the third port into third and fourth outgoing light signals. The first, second, third, and fourth outgoing light signals are spaced-apart from one another. The first and second outgoing light signals include, respectively, orthogonal polarization components from the first light signal, and the third and fourth outgoing light signals include, respectively, orthogonal polarization components from the second light signal. The Faraday stages, including a first Faraday stage and a last Faraday stage, being arranged in series. The first Faraday stage receives light from the beam splitter, and the last Faraday stage is positioned so as to provide light to the second port. The second port and the walk-off directions and directions of rotation of the Faraday stages are chosen such that light entering the first port exits the second port, light entering the second port exits the third port, and light entering the third port is prevented from exiting the first and second ports.

    摘要翻译： 具有第一，第二和第三端口的光循环器。 光循环器包括分束器和多个法拉第级。 分束器连接到第一和第三端口，并将进入第一端口的第一光信号分离为第一和第二输出光信号。 分束器还将进入第三端口的第二光信号分离成第三和第四输出光信号。 第一，第二，第三和第四出射光信号彼此间隔开。 第一和第二输出光信号分别包括来自第一光信号的正交偏振分量，第三和第四输出光信号分别包括来自第二光信号的正交偏振分量。 法拉第阶段，包括第一个法拉第阶段和最后一个法拉第阶段，系列排列。 第一法拉第阶段从分束器接收光，并且最后的法拉第阶段被定位成向第二端口提供光。 选择法拉第级的第二端口和离开方向和旋转方向，使得进入第一端口的光离开第二端口，进入第二端口的光从第三端口离开，并且防止进入第三端口的光 退出第一和第二个端口。

    Optical circulator
    34.
    发明公开
    Optical circulator 审中-公开
    Optischer Zirkulator

    公开(公告)号：EP0911674A2

    公开(公告)日：1999-04-28

    申请号：EP98118448.4

    申请日：1998-09-30

    申请人： JDS FITEL INC.

    发明人： Cheng, Yihao

    IPC分类号： G02F1/09 ,  G02B6/26 ,  G02B6/32

    CPC分类号： G02B6/2746 ,  G02B6/272 ,  G02B6/2848 ,  G02B6/2937 ,  G02B6/32

    摘要： An at least 3-port optical circulator has first group of optical components, and a second group of optical components, the rust group being separated from the second group by an optical distance "l". Each group of optical components has a divider and combiner for dividing an input beam into two beams having orthogonal polarizations and for combining two beams having orthogonal polarizations into a single beam. Furthermore, each group has a GRIN lens for at least substantially collimating or focussing input light, ad a polarization rotator between the first divider and combiner and the GRIN lens for making two orthogonal polarization vectors parallel or the two parallel polarization vectors orthogonal to one of or both of the first and second group of optical elements having beam shifting means disposed to shift two beams having a predetermined same polarization. The beam shifting means are of a thickness and orientation so that a beam of light that propagates from a first port sequentially to a second port and from the second port sequentially to a third port are shifted a distance equal to the distance between the optical axes of the first and the third ports.

    摘要翻译： 至少3端口光学循环器具有第一组光学部件和第二组光学部件，所述防锈组通过光学距离“l”与第二组分离。 每组光学部件具有分割器和组合器，用于将输入光束分成具有正交偏振的两个光束，并且将具有正交偏振的两个光束组合成单个光束。 此外，每个组具有用于至少基本上准直或聚焦输入光的GRIN透镜，以及在第一分割器和组合器之间的偏振旋转器和GRIN透镜，用于使两个正交偏振矢量平行或两个平行偏振矢量正交于 具有光束移动装置的第一和第二组光学元件都设置成移动具有预定相同极化的两束光束。 光束移动装置具有厚度和取向，使得从第一端口顺序地传播到第二端口并且从第二端口顺序地传播到第三端口的光束被移动距离等于光轴的光轴之间的距离 第一和第三个港口。

    Optical circulator
    36.
    发明公开
    Optical circulator 失效
    光学循环器

    公开(公告)号：EP0848278A1

    公开(公告)日：1998-06-17

    申请号：EP97305104.8

    申请日：1997-07-10

    申请人： FUJITSU LIMITED

    发明人： Fukushima, Nobuhiro, c/o Fujitsu Limited

    IPC分类号： G02F1/09 ,  G02B6/26

    CPC分类号： G02B6/2746 ,  G02F1/093

    摘要： An optical device having a function of an optical circulator of which forward losses are uniformly small wihle reverse losses are uniformly great. The optical device applicable to be used as an improved three-port optical circulator has three optical coupling units (30) connected optically to three ports (1,2,3) respectively, a reflecting unit (32) for giving a polarization plane rotation of 90° to an input beam, and a main polarization beam splitter (40) having a polarized-wave separating film (38) for optically connecting the optical coupling units (30) and the reflecting unit (32) through transmission and reflection. Each of the optical coupling units (30) comprises a subsidiary polarization beam splitter (46) and a polarization converter (48). The subsidiary polarization beam splitter (46) couples the relevant port (1,2,3) to first and second polarized beams perpendicular to each other. The polarization converter (48) converts the polarization state of one of the first and second polarized beams in such a manner that the first and second polarized beams are transmitted through or reflected by the polarized-wave separating film (38) in accordance with the directions of the beams.

    摘要翻译： 具有光纤环行器的功能的光学器件的前向损耗均匀小而反向损耗均匀很大。 适用于改进的三端口光环行器的光学装置具有分别与三个端口（1,2,3）光学连接的三个光学耦合单元（30），用于给出偏振面旋转的反射单元（32） 90°的主偏振分束器，以及具有用于通过透射和反射光学地连接光耦合单元（30）和反射单元（32）的偏振波分离膜（38）的主偏振分束器（40）。 每个光耦合单元（30）包括辅偏振分束器（46）和偏振转换器（48）。 辅助偏振分束器（46）将相关端口（1,2,3）耦合到彼此垂直的第一和第二偏振光束。 偏振转换器（48）以这样的方式转换第一和第二偏振光束之一的偏振状态，使得第一和第二偏振光束根据方向透射或者被偏振分离膜（38）反射 的横梁。

    OPTICAL CIRCULATOR
    37.
    发明公开
    OPTICAL CIRCULATOR 失效
    光环行器

    公开(公告)号：EP0840902A1

    公开(公告)日：1998-05-13

    申请号：EP96923799.0

    申请日：1996-07-24

    申请人： JDS FITEL INC.

    发明人： CHENG, Yihao

    IPC分类号： G02B6 ,  G02B27 ,  G02F1

    CPC分类号： G02B6/2746 ,  G02B27/283 ,  G02F1/093

    摘要： A multi-port optical circulator for transmitting light from incoming and outgoing ports circularly includes one or more birefringent crystal plates (10) disposed adjacent to one another for dividing an input beam into two beams having orthogonal polarizations and for combining two beams having orthogonal polarizations into a singe beam. Polarization beam splitting cubes (14) introduce a beam to an opposite direction depending on the direction fo the plarization of the beam and thereby substantially reflecting only one of s and p-polarizations of the beam. A polarization rotator (32, 34) between the first dividing (10) and combining birefringent crystal (30) and said polarization dependent beam splitting cube makes two orthogonal polarization vectors parallel or the two parallel polarization vectors orthogonal to one another.

    Polarization independent optical isolator
    39.
    发明公开
    Polarization independent optical isolator 失效
    Polarisationsunabhängigeroptischer隔离器。

    公开(公告)号：EP0665452A1

    公开(公告)日：1995-08-02

    申请号：EP95101148.5

    申请日：1995-01-27

    申请人： NAMIKI PRECISION JEWEL CO., LTD.

    发明人： Konno,Yoshihiro, c/o Namiki Prec.Jewel Co.Ltd. ,  Aoki,Shigeaki, c/o Namiki Prec.Jewel Co.Ltd. ,  Ikegai,Kazuaki, c/o Namiki Prec.Jewel Co.Ltd.

    IPC分类号： G02B6/26 ,  G02F1/09

    CPC分类号： G02B6/2746 ,  G02B5/3083 ,  G02B6/272 ,  G02B6/2766 ,  G02F1/093 ,  G02F2203/06

    摘要： A polarization-independent optical isolator having a structure in which polarization dispersion is virtually eliminated by selecting the thickness and optical axis orientations of birefringent crystalline plates used in the isolator is disclosed. The optical isolator of the present invention employs a combination of birefringent crystalline plates wherein the optical axis orientation of at least one birefringent crystalline plate in the optical isolator is different from the optical axis orientation of the remaining birefringent crystalline plates, and the polarization mode dispersion, which is induced when the beam propagates through the birefringent crystalline plate having a different optical axis orientation, is equal to the dispersion rate of the polarization mode dispersion attributable to the remaining birefringent crystalline plates and in a mutually inverse direction.

    摘要翻译： 公开了一种偏振无关的光隔离器，其具有通过选择隔离器中使用的双折射晶体板的厚度和光轴取向来实际消除偏振色散的结构。 本发明的光隔离器采用双折射结晶板的组合，其中光隔离器中的至少一个双折射晶体板的光轴取向与剩余双折射晶体板的光轴取向不同，并且偏振模色散， 当光束传播通过具有不同光轴取向的双折射晶体板时感应的等于由剩余的双折射结晶板引起的偏振模色散的色散速率和相反的方向。