利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

17 条记录 (耗时 0.015 秒)

    Optical component
    2.
    发明公开
    Optical component 审中-公开
    Optische Komponente

    公开(公告)号：EP1137128A3

    公开(公告)日：2004-08-04

    申请号：EP01302223.1

    申请日：2001-03-12

    申请人： The Furukawa Electric Co., Ltd.

    发明人： Tsuda, Toshiaki ,  Mizuno, Kazuyo ,  Ohta, Toshihiko ,  Namiki, Shu ,  Yodo, Shigehito ,  Mimura, Yu ,  Emori, Yoshihiro

    IPC分类号： H01S3/067 ,  G02B6/16

    CPC分类号： H01S3/067 ,  H01S3/10023

    摘要： Wavelength multiplex transmission is realized in which the temperature dependency-of an EDFA is compensated for in relation to the wavelengths which are used. A first and a second long-period grating which have different periods from each other are formed in an optical fiber, ensuring that the peak wavelength of a waveform representing a optical transmission loss characteristic of the first long-period grating side is located on the shorter wavelength side than a transmission band and a peak wavelength of a waveform representing a optical transmission loss characteristic of the second long-period grating side is located on the longer wavelength side within the transmission band. The waveforms representing the optical transmission loss characteristics of the respective long-period gratings shift depending on the temperature, a loss deviation characteristic of the first long-period grating allows a optical transmission loss value on the shorter wavelength side than the transmission band to increase as the temperature increases so that a large gain deviation characteristic of an optical amplifier is compensated for, a loss deviation characteristic of the second long-period grating compensates for a residual gain deviation characteristic on the longer wavelength side within the transmission band, whereby the temperature dependent gain characteristic of the optical amplifier is compensated for within the transmission band.

    摘要翻译： 实现了相对于所使用的波长补偿EDFA的温度依赖性的波长多路复用传输。 在光纤中形成具有不同周期的第一和第二长周期光栅，确保表示第一长周期光栅侧的光传输损耗特性的波形的峰值波长位于较短的 并且表示第二长周期光栅侧的光传输损耗特性的波形的峰值波长位于传输频带内的较长波长侧。 表示相应的长周期光栅的光传输损耗特性的波形根据温度而变化，第一长周期光栅的损耗偏差特性允许在比传输频带更短波长侧的光传输损耗值增加为 温度升高，从而补偿了光放大器的大的增益偏差特性，第二长周期光栅的损耗偏差特性补偿了透射带内较长波长侧的残余增益偏差特性，从而使温度依赖 光放大器的增益特性在传输频带内被补偿。

    WDM, multiple wavelength pumped, Raman amplifier
    5.
    发明公开
    WDM, multiple wavelength pumped, Raman amplifier 审中-公开
    拉曼放大器，用于与多波长泵浦源波分复用

    公开(公告)号：EP2755289A3

    公开(公告)日：2015-01-21

    申请号：EP14154548.3

    申请日：2001-01-11

    申请人： The Furukawa Electric Co., Ltd.

    发明人： Emori, Yoshihiro ,  Namiki, Shu

    IPC分类号： H01S3/30 ,  G02F1/35 ,  H04B10/291 ,  H01S3/094 ,  H01S3/067 ,  H01S3/102

    CPC分类号： H04B10/2916 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/09408 ,  H01S3/094096 ,  H01S3/10007 ,  H01S3/302 ,  H01S2301/04

    摘要： A Raman amplifier comprises a pump source (10) configured to produce pumping wavelengths divided into a short wavelength side group and a long wavelength side group, a boundary between the short wavelength side group and the long wavelength side group being defined by a longest interval between any two adjacent pumping wavelengths. The short wavelength side group includes two or more pumping wavelengths having substantially equidistant intervals therebetween, e.g. 1 THz, that are shorter than the longest interval, e.g. 2 THz or more. The long wavelength side group includes not more than two pumping wavelengths. The pump source (10) is configured to adjust a level of at least one of the short wavelength side group and the long wavelength side group so as to impart a predetermined tilt to a composite gain profile.

    Optical repeater and Raman amplification method
    7.
    发明公开
    Optical repeater and Raman amplification method 有权
    光放大器和拉曼放大器的方法

    公开(公告)号：EP2306604A3

    公开(公告)日：2011-07-27

    申请号：EP10075600.6

    申请日：1999-07-23

    申请人： The Furukawa Electric Co., Ltd.

    发明人： Akasaka, Youichi ,  Emori, Yoshihiro ,  Namiki, Shu

    IPC分类号： H01S3/30 ,  H04B10/17

    CPC分类号： H01S3/302 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/0912 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/094096 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/2375 ,  H01S3/2383 ,  H01S2301/04 ,  H04B10/2916

    摘要： Embodiments of the present invention relate to an optical repeater and a method for Raman-amplifying a signal light. The optical repeater comprises a rare-earth doped fiber amplifiers (10), with substantially fixed amplifying gain characteristics, having a first amplifying optical fiber including rare-earth doped optical fiber; a Raman amplifier (9), which has a second amplifying optical fiber and pumping units (1) for supplying pumping light having one or more central wavelengths to the second amplifying optical fiber, connected to a front stage of the rare-earth doped fiber amplifiers, the Raman amplifier being configured to have a variable gain profile by controlling intensity of the pumping light outputted from the pumping unit; and a controlling unit (15, 24) for controlling the intensity of the output light which is to be outputted to the rare-earth doped fiber amplifier by compensating for fluctuation of intensity in the input light being inputted to the Raman amplifier by controlling the gain profile of the Raman amplifier.

    Optical regenerator comprising a Kerr shutter
    10.
    发明公开
    Optical regenerator comprising a Kerr shutter 审中-公开
    Optischer Regenerator mit Kerr-verschluss

    公开(公告)号：EP2375593A1

    公开(公告)日：2011-10-12

    申请号：EP11158843.0

    申请日：2003-06-11

    申请人： The Furukawa Electric Co., Ltd.

    发明人： Igarashi, Koji ,  Matsuhita, Shunichi ,  Namiki, Shu ,  Taksaka, Shigehiro ,  Inoue, Takashi ,  Tobioka, Hideaki ,  Hiroishi, Jiro

    IPC分类号： H04B10/17 ,  H04B10/18

    CPC分类号： H04B10/299 ,  G02F1/3513 ,  H04B10/25077

    摘要： An optical regeneration system for regenerating a degenerated signal light, comprising a regeneration device having a Kerr shutter. The Kerr shutter comprises an optical LO (local oscillation) generator for generating an optical LO on an OPLL (optical phase locked loop), a phase comparator for detecting the phase difference between an externally-input signal light and an optical LO, and a control unit for regulating the repeated frequency of an optical LO based on the phase difference.

    摘要翻译： 一种用于再生退化信号光的光学再生系统，包括具有克尔光闸的再生装置。 克尔快门包括用于在OPLL（光锁相环）上产生光LO的光LO（本地振荡）发生器，用于检测外部输入信号光与光LO之间的相位差的相位比较器，以及控制 用于基于相位差来调节光学LO的重复频率的单元。