利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

18 条记录 (耗时 0.011 秒)

    Optical waveguide grating and production method therefor
    2.
    发明公开
    Optical waveguide grating and production method therefor 失效
    光学波导光栅和方法及其生产

    公开(公告)号：EP1882962A3

    公开(公告)日：2008-02-06

    申请号：EP07108921.3

    申请日：1997-04-02

    申请人： FUJIKURA LTD.

    发明人： Shima, Kensuke ,  Nakai, Michihiro ,  Hidaka, Hiroshi ,  Himeno, Kuniharu ,  Okude, Satoshi ,  Wada, Akira ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Ienaka, Takuya ,  Yamauchi, Ryozo

    IPC分类号： G02B6/00

    CPC分类号： G02B6/124 ,  G02B6/021 ,  G02B6/0218 ,  G02B6/0219

    摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence, due to the use of silica glass doped with germanium and boron for the core.
    The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides. The rejection can be increased by reducing the occurrence of cases wherein propagation modes of the core coupled to cladding modes once again couple to the core in palnar optical waveguide gratings formed by making periodic changes in the waveguide structure along the direction of propagation of light in an optical waveguide having a cladding with a lower refractive index than the core surrounding the core, by making the thickness of the cladding at least thirteen times the thickness of the core.

    Optical waveguide grating and production method therefor
    3.
    发明公开
    Optical waveguide grating and production method therefor 失效
    光波导光栅及其制造方法

    公开(公告)号：EP0805365A2

    公开(公告)日：1997-11-05

    申请号：EP97400859.1

    申请日：1997-04-16

    申请人： FUJIKURA LTD.

    发明人： Nakai, Michihiro ,  Shima, Kensuke ,  Hidaka, Hiroshi ,  Okude, Satoshi ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Wada, Akira ,  Yamauchi, Ryozo

    IPC分类号： G02B6/16

    CPC分类号： G02B6/02142 ,  G02B6/02138 ,  G02B6/02152

    摘要： A method of producing an optical waveguide grating by exposure to light. An optical waveguide having a core composed of a material wherein the refractive index changes due to exposure to UV light is formed into an optical waveguide grating by applying a grating portion formation step wherein a grating portion is formed by irradiation with UV light at a predetermined spacing, and an overall exposure step after formation of the grating portion wherein the entire grating portion is irradiated with UV light. As a result, the effective refractive index of the grating portion is changed so as to allow the central wavelength to be adjusted without changing the rejection. Consequently, the grating properties can be precisely and easily controlled.

    摘要翻译： 一种通过曝光来制造光波导光栅的方法。 具有由其中由于暴露于UV光而折射率变化的材料构成的芯的光波导通过应用光栅部分形成步骤形成为光波导光栅，其中光栅部分通过用预定间隔的UV光照射而形成 以及在形成光栅部分之后的整个曝光步骤，其中整个光栅部分被UV光照射。 结果，光栅部分的有效折射率发生改变，从而允许调整中心波长而不改变抑制。 因此，光栅特性可以被精确和容易地控制。

    Method for exciting an optical amplification medium fiber, structure for emitting excited light into an optical amplification medium fiber, and optical fiber laser
    6.
    发明公开
    Method for exciting an optical amplification medium fiber, structure for emitting excited light into an optical amplification medium fiber, and optical fiber laser 有权
    甲用于激励的光纤放大器的方法的装置，用于在光纤放大器和光纤激光器发射的激发光

    公开(公告)号：EP1482605A3

    公开(公告)日：2005-02-16

    申请号：EP04253071.7

    申请日：2004-05-25

    申请人： FUJIKURA LTD.

    发明人： Shima, Kensuke ,  Kitabayashi, Tomoharu ,  Sakai, Tetsuya

    IPC分类号： H01S3/067 ,  H01S3/094

    CPC分类号： H01S3/06708 ,  H01S3/094003

    摘要： An inner cladding exposure section 14 is formed by removing a part of an outer cladding 4 of an optical amplification medium fiber 10 which has a porous layer 3 between the inner cladding 2 and the outer cladding 4 in a longitudinal direction. An end surface 23 of an optical fiber 20 for the excited light incidence is cemented on an outer periphery of the exposed inner cladding 2. The excited light 24 is incident into the optical amplification medium fiber 10 from the optical fiber 20 for the excited light incidence. By doing this, it is possible to provide a method for exciting a light in an optical amplification medium fiber which can realize a superior amplitude while emitting the excited light so as to be incident into the optical amplification medium fiber highly efficiently.

    摘要翻译： 的内包层的曝光部分14通过去除光放大介质光纤10具有与内包层2和在纵向方向上的外侧包层4之间的多孔层3的外包层4的一部分而形成。 表面的上光纤20的激发光入射端部23在暴露的内包层的外周被凝成2.激发光24入射到从光纤20的激发光入射的光放大介质10的纤维 ， 通过这样做，有可能提供一种在光放大介质纤维用于激发光的方法而发射激励光，可实现优良的振幅，以便入射到光放大介质纤维高效。

    Laser oscillator and filtering method
    7.
    发明公开
    Laser oscillator and filtering method 审中-公开
    Laseroszillator和Filterverfahren

    公开(公告)号：EP2330696A2

    公开(公告)日：2011-06-08

    申请号：EP10192430.6

    申请日：2010-11-24

    申请人： FUJIKURA LTD.

    发明人： Shima, Kensuke

    IPC分类号： H01S3/067 ,  H01S3/08

    CPC分类号： H01S3/0675 ,  H01S3/06712 ,  H01S3/08027 ,  H01S3/08045

    摘要： Provided is a fiber laser including a mode filter for selectively attenuating, among modes included in laser light propagating through a multi-mode fiber, any mode other than a radially polarized mode. Among the modes included in the laser light propagating through the multi-mode fiber, the fiber laser causes the radially polarized mode to resonate, so as to emit radially polarized laser light. The mode filter includes a long-period fiber grating obtained by writing, to a multi-mode fiber capable of guiding the radially polarized mode, a grating for selectively attenuating any waveguide mode other than the radially polarized mode.

    摘要翻译： 提供了一种光纤激光器，其包括用于在通过多模光纤传播的激光中包括的模式中选择性衰减的模式滤波器，除了径向偏振模式之外的任何模式。 在通过多模光纤传播的激光中包括的模式中，光纤激光器使得径向偏振模式谐振，从而发射径向偏振的激光。 模式滤波器包括通过向能够引导径向偏振模式的多模光纤写入获得的长周期光纤光栅，用于选择性衰减除径向偏振模式之外的任何波导模式的光栅。

    Optical fiber grating and manufacturing method therefor
    8.
    发明公开
    Optical fiber grating and manufacturing method therefor 失效
    Optisches Faser-Gitter und sein Herstellungsverfahren

    公开(公告)号：EP0902308A1

    公开(公告)日：1999-03-17

    申请号：EP98304293.8

    申请日：1998-06-01

    申请人： FUJIKURA LTD.

    发明人： Yamauchi, Ryozo ,  Wada, Akira ,  Sakai, Tetsuya ,  Tanaka, Nobuyuki ,  Shima, Kensuke ,  Nishide, Kenji ,  Yamasaki, Shigefumi

    IPC分类号： G02B6/16 ,  H04B10/00

    CPC分类号： G02B6/02147 ,  G02B6/02095

    摘要： The present invention relates to an optical fiber grating manufacturing method comprising the steps of heating intermittently an optical fiber (4) provided with a core (1b) having residual stress in the longitudinal direction; softening a peripheral cladding (1c) of this core (1b); and forming spatial periodic changes for the relative refractive-index difference between said core (1b) and said cladding (1c), in the longitudinal direction of said fiber (4) by having the index of refraction of the core (1b) change through the releasing of said optical fiber.
    Next, as shown by a broken-line arrow, by the laser scanning device (6d), the laser beam (7) is scanned from the exterior side surface of the optical fiber (4), so as to be scanned traversing the optical fiber (4) in a direction perpendicular to the longitudinal direction of this optical fiber (4).
    At this time, the optical fiber (4) is heated to a temperature at least equal to or higher than the softening temperature of the cladding (1c).

    摘要翻译： 光纤光栅制造方法技术领域本发明涉及一种光纤光栅制造方法，其特征在于，具备在长度方向间歇地加热具有残留应力的芯体（1b）的光纤（4） 软化该芯（1b）的外围包层（1c）; 以及通过使所述纤芯（1b）的折射率通过所述纤芯（1b）的折射率变化而在所述纤维（4）的纵向上形成所述纤芯（1b）和所述包层（1c）之间的相对折射率差的空间周期性变化 释放所述光纤。 接下来，如虚线箭头所示，通过激光扫描装置（6d），从光纤（4）的外侧表面扫描激光束（7），以扫描横穿光纤 （4）在与该光纤（4）的纵向垂直的方向上。 此时，光纤（4）被加热到至少等于或高于包层（1c）的软化温度的温度。

    Optical Waveguide filter and production process thereof
    9.
    发明公开
    Optical Waveguide filter and production process thereof 失效
    Optisches Wellenleiterfilter和sein Herstellungsverfahren

    公开(公告)号：EP0810454A1

    公开(公告)日：1997-12-03

    申请号：EP97105954.8

    申请日：1997-04-10

    申请人： FUJIKURA LTD.

    发明人： Nakai, Michichiro ,  Sudoh, Masaaki ,  Shima, Kensuke ,  Sakai, Tetsuya ,  Hidaka, Hiroshi ,  Wada, Akira ,  Okude, Satoshi ,  Yamauchi, Ryozo

    IPC分类号： G02B6/124 ,  G02B6/293

    CPC分类号： G02B6/124 ,  G02B2006/12107 ,  G02B2006/12109

    摘要： Core comprises a main stem which is formed on a substrate (10), linearly extending in the beam propagating direction and short branches (12a,12b) with a certain length which extend perpendicularly to the beam propagating direction (16) toward both sides along the plane of the substrate and are arranged at regular intervals in the beam propagating direction. Thus, the branches are arranged in a ladder geometry when it is viewed from the top, forming a rectangular waveform arrangement. The core (12) constitutes a grating structure in which the width of the core is made to vary periodically with the branches in the beam propagating direction.

    摘要翻译： 芯部包括形成在基板（10）上的主杆，其沿着光束传播方向线性延伸并且具有一定长度的短分支（12a，12b），其沿着沿着光束传播方向（16）的两侧垂直于光束传播方向 并且在光束传播方向上以规则的间隔布置。 因此，当从顶部观察时，分支被布置成梯形几何形状，形成矩形波形布置。 芯（12）构成光栅结构，其中芯的宽度使光束传播方向上的分支周期性地变化。

    Optical waveguide grating and production method therefor
    10.
    发明公开
    Optical waveguide grating and production method therefor 失效
    Optische Wellenleiter-Gitter-Anordnung und deren Herstellungsmethode

    公开(公告)号：EP0800098A2

    公开(公告)日：1997-10-08

    申请号：EP97400757.7

    申请日：1997-04-02

    申请人： FUJIKURA LTD.

    发明人： Shima, Kensuke ,  Nakai, Michihiro ,  Hidaka, Hiroshi ,  Himeno, Kuniharu ,  Okude, Satoshi ,  Wada, Akira ,  Sudoh, Masaaki ,  Sakai, Tetsuya ,  Ienaka, Takuya ,  Yamauchi, Ryozo

    IPC分类号： G02B6/16

    CPC分类号： G02B6/124 ,  G02B6/021 ,  G02B6/0218 ,  G02B6/0219

    摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence, due to the use of silica glass doped with germanium and boron for the core. The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides. The rejection can be increased by reducing the occurrence of cases wherein propagation modes of the core coupled to cladding modes once again couple to the core in palnar optical waveguide gratings formed by making periodic changes in the waveguide structure along the direction of propagation of light in an optical waveguide having a cladding with a lower refractive index than the core surrounding the core, by making the thickness of the cladding at least thirteen times the thickness of the core.

    摘要翻译： 具有辐射模耦合特性的光波导光栅，作为光学部件具有出色的稳定性和可靠性，其中由于使用掺杂有锗和硼的石英玻璃作为芯，因此阻带的中心波长具有低的温度依赖性 。 可以通过在光波导中形成辐射模耦合光波导光栅而不增加光栅长度来减小抑制带宽，其中芯的平均相对折射率差大于光通信波导的平均相对折射率差。 可以通过减少与包层模式耦合的芯的传播模式再次耦合到光栅波导光栅中的芯的情况的发生的情况，可以增加抑制，所述光波导光栅通过沿着光的传播方向沿波导结构的周期性变化而形成 光波导具有通过使包层的厚度至少为芯的厚度的十三倍而具有比围绕芯的芯的折射率低的包层的包层。