レーザ装置、及び光音響計測装置
    22.
    发明申请
    レーザ装置、及び光音響計測装置 审中-公开
    激光器件和光电测量装置

    公开(公告)号:WO2015064520A1

    公开(公告)日:2015-05-07

    申请号:PCT/JP2014/078448

    申请日:2014-10-27

    Abstract:  アレキサンドライト結晶を用いたレーザ装置において、小型化した場合でも異常発振を抑制でき、Qスイッチやアレキサンドライト結晶のARコートの破壊を抑制するレーザ装置及び光音響計測装置を提供する。レーザロッド11は、アレキサンドライト結晶を含む。フラッシュランプ12jは、レーザロッド11に励起光を照射する。共振器は、レーザロッド11を挟み込む一対のミラー14、15を含む。Qスイッチ16は、共振器の光路内に挿入され、共振器のQ値を制御する。偏光子17は、共振器内に挿入され、レーザロッドから出射した光のうち偏光方向が所定方向の光を選択的に透過するノンコートのブリュースター型の偏光子である。

    Abstract translation: 在使用亚历山大晶体的激光装置中,提供即使尺寸减小也能够防止异常振动的激光装置,从而防止Q开关上的AR涂层和亚光晶体晶体受损,并且还提供光声 测量装置。 激光棒(11)包括亚历山大晶体。 闪光灯(12)用激发光照射激光棒(11)。 谐振器包括设置在激光棒(11)的相对的相对侧上的一对反射镜(14,15)。 将Q开关(16)插入到谐振器的光路中,并控制谐振器的Q值。 偏振器(17)插入谐振器内,并且是从激光棒发射的光选择性地透射具有预定偏振方向的光的未涂布的布鲁斯特偏振器。

    GAIN EQUALIZER, LIGHT AMPLIFIER AND OPTICAL COMMUNICATION SYSTEM
    23.
    发明申请
    GAIN EQUALIZER, LIGHT AMPLIFIER AND OPTICAL COMMUNICATION SYSTEM 审中-公开
    增益均衡器,光放大器和光通信系统

    公开(公告)号:WO00036714A1

    公开(公告)日:2000-06-22

    申请号:PCT/JP1999/007023

    申请日:1999-12-14

    Abstract: A fiber amplifier uses an erbium-doped fiber core (1) in which a plurality of long-period fiber gratings (21) functioning as a gain equalizer are formed by an ultraviolet laser. Each of the fiber gratings (21) is irradiated with ultraviolet laser through the cladding layer of the optical fiber core (1) to provide periodic modulation for the refractive index of the fiber core. The fiber gratings (21) in the core (1) compensate for the wavelength dependency of gain to provide flat gain, resulting in uniform and efficient amplification over a wide range.

    Abstract translation: 光纤放大器使用掺铒光纤芯(1),其中通过紫外线激光器形成用作增益均衡器的多个长周期光纤光栅(21)。 通过光纤芯(1)的包覆层,用紫外线激光照射各光纤光栅(21),对纤芯的折射率进行周期调制。 芯(1)中的光纤光栅(21)补偿增益的波长依赖性以提供平坦增益,从而在宽范围内实现均匀且有效的放大。

    THERMAL TUNING OF OPTICAL AMPLIFIERS IN WDM SYSTEMS
    24.
    发明申请
    THERMAL TUNING OF OPTICAL AMPLIFIERS IN WDM SYSTEMS 审中-公开
    WDM系统中光放大器的热调制

    公开(公告)号:WO00001101A3

    公开(公告)日:2000-04-20

    申请号:PCT/US1999/013636

    申请日:1999-06-18

    Abstract: Techniques for controlling the shape of the gain spectrum of an optical amplifier (13) based on the temperature and level of inversion of the amplifier's amplifying medium (20) are provided. An increase in temperature for an amplifying medium having a high level of inversion results in an increase in gain for longer wavelengths relative to shorter wavelengths, i.e., a counterclockwise tilt of the gain spectrum, while an increase in temperature for an amplifying medium having a lower level of inversion results in the opposite effect, i.e., a clockwise tilt. These effects can be used to compensate for changes in the operating conditions of the amplifier, e.g., to compensate for changes in signal powers. The effects of thermal tuning are especially useful in WDM systems employing multi-stage amplifiers.

    Abstract translation: 提供了基于放大器放大介质(20)的反相温度和电平来控制光放大器(13)的增益谱形状的技术。 具有高反转水平的放大介质的温度升高导致相对于较短波长的较长波长的增益增加,即增益谱的逆时针倾斜,而具有较低波长的放大介质的温度升高 反转水平产生相反的效果,即顺时针倾斜。 这些效果可用于补偿放大器的工作条件的变化,例如补偿信号功率的变化。 热调谐的效果在采用多级放大器的WDM系统中特别有用。

    OPTICAL AMPLIFIER
    25.
    发明申请
    OPTICAL AMPLIFIER 审中-公开
    光放大器

    公开(公告)号:WO00021166A1

    公开(公告)日:2000-04-13

    申请号:PCT/JP1999/005413

    申请日:1999-10-01

    Abstract: An optical amplifier having a series of optical fibers to which a rare earth element is added comprises one or more variable light-attenuating means and attenuation control means for varying the light attenuation of the variable light-attenuating means according to the temperature of the optical fibers or of the environment. An optical amplifier, in another aspect, having a series of optical fibers to which a rare earth element is added comprises a replaceable optical part, one or more variable light-attenuating means, and attenuation control means for varying the light attenuation of the variable light-attenuating means according to the temperature of the optical fibers or of the environment. An optical amplifier, in further another aspect, having a series of optical fibers to which a rare earth element is added comprises one or more externally-controllable variable light-attenuating means the light attenuation by which is changed with the intensities of the input and output signal lights of the optical amplifier.

    Abstract translation: 具有添加有稀土元素的一系列光纤的光放大器包括一个或多个可变光衰减装置和衰减控制装置,用于根据光纤的温度改变可变光衰减装置的光衰减 或环境。 在另一方面,光放大器具有添加有稀土元素的一系列光纤,包括可更换的光学部件,一个或多个可变光衰减装置,以及用于改变可变光的光衰减的衰减控制装置 根据光纤的温度或环境的衰减装置。 在另一方面,一种光放大器,具有添加有稀土元素的一系列光纤,包括一个或多个外部可控可变光衰减装置,光衰减随着输入和输出的强度而变化 光放大器的信号灯。

    DEVICE WITH OPTICAL FIBRE AMPLIFIER
    26.
    发明申请
    DEVICE WITH OPTICAL FIBRE AMPLIFIER 审中-公开
    与光纤放大器DEVICE

    公开(公告)号:WO1997009757A1

    公开(公告)日:1997-03-13

    申请号:PCT/DE1996001594

    申请日:1996-08-29

    CPC classification number: H01S3/1301 H01S3/131 H01S2301/06

    Abstract: A device with an optical fibre amplifier in which theres is a regulating circuit to stabilise the amplification. An additional optical signal (z) is applied to the input of the optical fibre amplifier within its optical amplification bandwidth in the regulating circuit. Its level is controlled by a control unit (Q) to the first input of which is applied a first measuring signal (m1) representing the level of an optical signal from a first region of the amplification bandwidth amplified by the optical fibre amplifier (V). At the second input of the control unit there is a second measuring signal (m2) representing the level of a so far unamplified optical signal from a second range of the amplification bandwidth.

    Abstract translation: 装置与光纤放大器,其中提供了一种用于稳定的控制回路的增益。 在控制回路中的光学增益带宽内的光纤放大器的输入端被提供到附加光学信号(z)表示。 其电平由一个控制元件(Q)被控制,其第一输入端被馈送到表示从增益带宽的第一部分放大后的光信号的光纤放大器(V)的电平的第一测量信号(M1)的控制。 在控制元件的第二输入是一个表示尚未放大后的光信号的从增益带宽的第二部分的水平的第二测量信号(M2)。

    GAIN CONTROLLED OPTICAL FIBRE AMPLIFIER
    27.
    发明申请
    GAIN CONTROLLED OPTICAL FIBRE AMPLIFIER 审中-公开
    增益控制光纤放大器

    公开(公告)号:WO1995022847A1

    公开(公告)日:1995-08-24

    申请号:PCT/GB1995000346

    申请日:1995-02-20

    Abstract: In a gain-controlled erbium-doped optical amplifier, gain control is achieved by clamping the gain of a laser cavity to be equal to the overall cavity loss and by fixing the resonant wavelength of the amplifier to be at a first wavelength. When an optical signal to be amplified having a second wavelength different from the first wavelength passes through the amplifier the gain experienced by the signal depends entirely on the gain of the cavity, and not on the intensity of the signal. If the first wavelength is arranged to be at the peak of the sum of the absorption and emission cross sections of erbium, the amplifier exhibits minimum sensitivity to ambient changes in temperature.

    Abstract translation: 在增益控制掺铒光放大器中,增益控制是通过将激光腔的增益钳位在等于总谐振腔损耗并将放大器的谐振波长固定为第一波长来实现的。 当具有不同于第一波长的第二波长的要被放大的光信号通过放大器时,信号所经历的增益完全取决于空腔的增益,而不依赖于信号的强度。 如果第一波长被布置成铒的吸收和发射截面之和的峰值,放大器对环境温度变化表现出最小的灵敏度。

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