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    Optical waveguide type grating element, production method thereof, multiplexer/demultiplexer module, and optical transmission system
    2.
    发明授权
    Optical waveguide type grating element, production method thereof, multiplexer/demultiplexer module, and optical transmission system 有权
    光波导型光栅元件，其制造方法，多路复用器/解复用器模块和光传输系统

    公开(公告)号：US06915045B2

    公开(公告)日：2005-07-05

    申请号：US10651287

    申请日：2003-08-29

    申请人： Ken Hashimoto ,  Manabu Shiozaki ,  Toshikazu Shibata ,  Akira Inoue

    发明人： Ken Hashimoto ,  Manabu Shiozaki ,  Toshikazu Shibata ,  Akira Inoue

    IPC分类号： G02B5/18 ,  G02B6/02 ,  G02B6/293 ,  G02B6/34 ,  H04J14/02

    CPC分类号： G02B6/2938 ,  G02B6/02085 ,  G02B6/02138 ,  G02B6/02152 ,  G02B6/2932

    摘要： The present invention relates to an optical waveguide type grating element and others in structure for decreasing absolute values of chromatic dispersion occurring in selective reflection of each of signal channels in a reflection band. The optical waveguide type grating element is provided with an optical waveguide in which signal light containing a plurality of signal channels spaced at a channel spacing λi propagates, and a grating which is an index modulation formed over a predetermined range of the optical waveguide. Particularly, the optical waveguide type grating element has a transmittance of −20 dB or less for each of the signal channels in the reflection band, and has a reflectance of −20 dB or less for each of signal channels outside the reflection band. Furthermore, a deviation of a group delay time of each of the signal channels in the reflection band, which is caused by reflection in the grating, is 10 ps or less in a wavelength range of (λCH−λi×0.375/2) or more but (λCH+λi×0.375/2) or less, where λCH is a center wavelength of each signal channel.

    摘要翻译： 本发明涉及光波导型光栅元件等结构，用于降低在反射带中每个信号通道的选择反射中出现的色散绝对值。 光波导型光栅元件设置有光波导，其中包含以信道间隔λ1隔开的多个信号通道的信号光传播，并且是在预定的波长上形成的索引调制的光栅 光波导的范围。 特别地，光波导型光栅元件对于反射带中的每个信号通道具有-20dB或更小的透射率，并且对于反射带外的每个信号通道具有-20dB或更小的反射率。 此外，由于光栅中的反射引起的反射带中的每个信号通道的群组延迟时间的偏差在（λ-CH-）的波长范围内为10ps以下， λλx x 0.375 / 2）或更小，但是（λ/ CH 2 +λ1 x 0.375 / 2）或更小，其中λ< SUB> CH 是每个信号通道的中心波长。

    Optical fiber and optical component including the same
    3.
    发明授权
    Optical fiber and optical component including the same 失效

    公开(公告)号：US06597849B2

    公开(公告)日：2003-07-22

    申请号：US09940620

    申请日：2001-08-29

    申请人： Shinji Ishikawa ,  Toshikazu Shibata ,  Ken Hashimoto

    发明人： Shinji Ishikawa ,  Toshikazu Shibata ,  Ken Hashimoto

    IPC分类号： G02B602

    CPC分类号： G02B6/03633 ,  C03C13/04 ,  G02B6/02057 ,  G02B6/29334

    摘要： The present invention relates to an optical fiber having a sufficient strength, in which not only a core region but also a cladding region contains GeO2, and an optical component including the same. The optical fiber has an outer diameter D; and comprises a core region, a first cladding region surrounding the core region, and a second cladding region surrounding the first cladding region. The core region is a glass region mainly composed of a silica glass material with a GeO2 content of 1 wt % or more. The first cladding region is a glass region, mainly composed of a silica glass material with a GeO2 content of 1 wt % or more, having an outer diameter of 0.80D or more but 0.98D or less. The second cladding region is a glass region mainly composed of a silica glass material with a GeO2 content of less than 0.2 wt %.

    Optical device, optical module, optical amplifier, and optical transmission system
    4.
    发明授权
    Optical device, optical module, optical amplifier, and optical transmission system 失效
    光器件，光模块，光放大器和光传输系统

    公开(公告)号：US06898002B2

    公开(公告)日：2005-05-24

    申请号：US10192847

    申请日：2002-07-11

    申请人： Masayuki Shigematsu ,  Kenichiro Takahashi ,  Tomomi Sano ,  Akira Inoue ,  Toshikazu Shibata

    发明人： Masayuki Shigematsu ,  Kenichiro Takahashi ,  Tomomi Sano ,  Akira Inoue ,  Toshikazu Shibata

    IPC分类号： G02B6/02 ,  G02B6/124 ,  H01S5/06 ,  H01S3/00

    CPC分类号： G02B6/124 ,  G02B6/022 ,  H01S5/0607

    摘要： The present invention relates to an optical device and the like which can facilitate a fine adjustment for an optical waveguide type diffraction grating device. The optical device includes a flexible member in which the optical waveguide type diffraction grating device is secured to a predetermined position, and bending means for applying a stress to said optical waveguide type diffraction grating device by bending said flexible member. The optical device changes the optical characteristics of the optical waveguide type diffraction grating device by adjusting the stress applied thereto by the bending means, to thereby perform easily various functions such as optical multiplexing, optical demultiplexing, path changing, and adjustment of dispersion characteristics.

    摘要翻译： 本发明涉及能够促进光波导型衍射光栅装置的微调的光学装置等。 光学装置包括柔性构件，其中光波导型衍射光栅装置固定到预定位置，以及弯曲装置，通过弯曲所述柔性构件向所述光波导型衍射光栅装置施加应力。 光学装置通过调整由弯曲装置施加的应力来改变光波导型衍射光栅装置的光学特性，从而容易地执行光复用，光解复用，路径改变和色散特性调整等各种功能。