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29 条记录 (耗时 0.019 秒)

    Optical amplifier and monitoring circuit
    6.
    发明公开
    Optical amplifier and monitoring circuit 有权
    OptischerVerstärkerundÜberwachungsschaltung

    公开(公告)号：EP1624596A2

    公开(公告)日：2006-02-08

    申请号：EP04028247.7

    申请日：2004-11-29

    申请人： FUJITSU LIMITED

    发明人： Onaka, Miki ,  Hayashi, Etsuko ,  Onaka, Hiroshi

    IPC分类号： H04B10/17 ,  H04B10/08

    CPC分类号： H04B10/2941 ,  H01S3/06754 ,  H01S3/1305 ,  H04B10/071 ,  H04B10/07955

    摘要： An optical amplifier of the present invention comprises: an optical amplifying circuit which amplifies a signal light; an optical reflection medium which is disposed on an optical fiber connected to the optical amplifying circuit and is capable of reflecting a noise light which exists in a predetermined wavelength range outside a signal band, among noise lights generated in said optical amplifying circuit, to radiate the reflected noise light to the outside of a core of the optical fiber; a light receiver which receives the noise light reflected to be radiated to the outside of the core of the optical fiber by the optical reflection medium, to detect the power of the noise light; and a computation circuit which computes the total power of the noise lights generated in the optical amplifying circuit based on the detection result of the light receiver. Thus, it is possible to provide at a low cost an optical amplifier provided with a monitoring function capable of detecting high accurately, with a simple optical circuit configuration, the noise light power and the like generated when the signal light is amplified.

    摘要翻译： 本发明的光放大器包括：放大信号光的光放大电路; 光反射介质，其设置在连接到光放大电路的光纤上，并且能够反射存在于所述光放大电路中产生的噪声光之中的信号频带外的预定波长范围内的噪声光，以辐射 将反射的噪声光反射到光纤的核心的外部; 光接收器，其通过光反射介质接收被辐射到光纤的芯的外部的噪声光，以检测噪声光的功率; 以及计算电路，其基于所述光接收器的检测结果来计算在所述光放大电路中产生的噪声光的总功率。 因此，可以以简单的光电路配置，在信号光被放大时产生的噪声光功率等，以低成本提供具有能够高精度地检测的监视功能的光放大器。

    Variable wavelength light source and optical amplifier using same
    7.
    发明公开
    Variable wavelength light source and optical amplifier using same 有权
    可变光源的波长和光放大器使用相同的

    公开(公告)号：EP1359686A3

    公开(公告)日：2005-12-21

    申请号：EP03002139.8

    申请日：2003-01-31

    申请人： FUJITSU LIMITED

    发明人： Onaka, Miki ,  Hayashi, Etsuko ,  Onaka, Hiroshi

    IPC分类号： H04B10/155 ,  H01S3/30 ,  H01S5/14

    CPC分类号： G02B26/0808 ,  H01S3/094096 ,  H01S3/1055 ,  H01S3/302 ,  H01S5/02284 ,  H01S5/0687 ,  H01S5/143 ,  H01S5/4012 ,  H01S5/4062 ,  H01S5/4087 ,  H04B10/506 ,  H04B10/572

    摘要： It is an object of the present invention to provide a variable wavelength light source apparatus capable of changing continuously wavelengths of a plurality of oscillation light over a wideband and an optical amplifier using the same. In order to achieve the above object, the variable wavelength light source apparatus comprises: a wavelength selection device in which a propagation direction of emitted light is changed according to a wavelength of incident light; a plurality of light sources emitting the light that has reciprocated in a gain medium with a high reflecting mirror on an end face thereof and has been amplified, to a predetermined position of the wavelength selection device at angles different from each other; an optical resonance reflection section reflecting a part of the light incident vertically out of the emitted light from the wavelength selection device to form an optical resonator configuration between the optical resonance reflection section and each of the high reflecting mirrors of the light sources to generate oscillation light; an optical coupler section coupling the oscillation light transmitted through the optical resonance reflection section in an output light path; and a drive section changing an arrangement angle of the wavelength selection device with respect to the optical resonance reflection section according to desired wavelength setting.

    Optical amplifier provided with control function of pumping light, and optical transmission system using the same
    9.
    发明公开
    Optical amplifier provided with control function of pumping light, and optical transmission system using the same 有权
    包含所述泵浦光，与光传输系统的控制功能的光放大器使用该放大器

    公开(公告)号：EP1460737A1

    公开(公告)日：2004-09-22

    申请号：EP04005961.0

    申请日：2004-03-12

    申请人： FUJITSU LIMITED

    发明人： Sugaya, Yasushi ,  Hayashi, Etsuko ,  Nishihara, Masato ,  Muro, Shinichirou

    IPC分类号： H01S3/30 ,  H04B10/17

    CPC分类号： G02B6/264 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

    摘要： In an optical transmission system according to one aspect of the present invention, for transmitting a WDM light from a transmission station to a reception station, utilizing a Raman amplifier, the Raman amplifier comprises: an optical amplification medium; a pumping light source generating a plurality of pumping lights having wavelengths different from each other; an optical device introducing the plurality of pumping lights to the optical amplification medium; and control means for controlling the pumping light source, the transmission station sends out a plurality of reference lights having wavelengths at which respective Raman gain obtained by the plurality of pumping lights reach peaks or wavelengths close to the above wavelengths, and the control means controls the plurality of pumping lights based on the optical powers of the plurality of reference lights. Thus, it becomes possible to accurately manage the optical power balance of the WDM light and the optical power of the entire WDM light.

    摘要翻译： 在一个光传输系统gemäß在本发明的一个方面，用于从传输站发送WDM光到一个接收站，利用拉曼放大器，所述拉曼放大器包括：光放大介质; 一个泵浦光源产生泵浦具有从海誓山盟不同波长的光的多元性; 到光学器件引入泵送灯到光放大介质的多元性; 和控制装置，用于控制所述激励光源，发送站发出的具有在哪个respectivement拉曼增益的波长通过的激发光所获得的多个到达峰值或波长接近上述波长参考光的多个，并且所述控制装置控制所述 基于参考光的多个的光功率的激发光的多个。 因此，变得能够准确地设定管理WDM光的光功率平衡和整个WDM光的光功率。