公开(公告)号：US20100091356A1

公开(公告)日：2010-04-15

申请号：US12571546

申请日：2009-10-01

申请人： Bichang Huang ,  Aihua Yu

发明人： Bichang Huang ,  Aihua Yu

IPC分类号： H01S3/00

CPC分类号： H01S3/06754 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/10015 ,  H01S3/1305 ,  H01S3/1608 ,  H01S2301/02 ,  H04B10/291

摘要： The invention discloses an apparatus for enhancing the signal power to ASE power ratio in an optical amplifier including a 1×n input optical switching component, n band-pass filters, and an n×1 output optical switching component, wherein the signal power is allowed to pass through the band-pass filter switched by the 1×n input optical switching component and the n×1 output optical switching component.

摘要翻译： 本发明公开了一种用于增强包括1×n输入光开关元件，n个带通滤波器和n×1输出光开关元件的光放大器中的ASE功率比的信号功率的装置，其中允许信号功率 通过由1×n输入光开关元件和n×1输出光开关元件切换的带通滤波器。

公开(公告)号：US07940452B2

公开(公告)日：2011-05-10

申请号：US12195864

申请日：2008-08-21

申请人： Zhigang Wang ,  Aihua Yu

发明人： Zhigang Wang ,  Aihua Yu

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/06754 ,  H01S3/0014 ,  H01S3/1616 ,  H01S2301/04

摘要： A method for acquiring spectrum shape of a gain flattening filter of a doped optical fiber amplifier comprises the steps of: measuring spectrum shapes at two gain point (H, L) of the doped optical fiber with invariable fiber length respectively; and acquiring various gain spectrums of the doped optical fiber with various fiber length and various population inversion level according to an expression: ErGain(λ,x,L′)=[ErLGain(λ)+[ErHGain(λ)−ErLGain(λ)]*x]*L′, Wherein Gain(λ) refers to the spectral function of gain, x is Δ′inv/Δinv which refers to change of population inversion level, and L′ is set as proportion of doped fiber length. Gain spectrums of the doped optical fiber with various fiber length can be acquired by measuring spectrum shapes at two gain point (H, L) of the doped optical fiber in invariable fiber length and applying change rule of gain spectrum of the doped optical fiber in different population inversion level, which improves the flexibility for design of amplifier.

摘要翻译： 一种用于获取掺杂光纤放大器的增益平坦滤波器的光谱形状的方法，包括以下步骤：分别测量具有不变光纤长度的掺杂光纤的两个增益点（H，L）处的光谱形状; 根据以下表达式获得具有各种光纤长度和各种总体反转电平的掺杂光纤的各种增益光谱：ErGain（λ，x，L'）= [ErLGain（λ）+ [ErHGain（λ）-ErLGain（λ） ] * x] * L'，其中增益（λ）是指增益的光谱函数，x是＆Dgr; inv /＆Dgr; inv，其是指群体反转级别的变化，L'被设置为掺杂光纤的比例 长度。 通过以不变的光纤长度测量掺杂光纤的两个增益点（H，L）处的光谱形状，并将掺杂光纤的增益光谱的变化规则应用于不同的光纤中，可以获得具有各种光纤长度的掺杂光纤的增益谱 人口反演水平提高了放大器设计的灵活性。

公开(公告)号：US20090303575A1

公开(公告)日：2009-12-10

申请号：US12411849

申请日：2009-03-26

申请人： Bichang Huang ,  Aihua Yu

发明人： Bichang Huang ,  Aihua Yu

IPC分类号： H01S3/00

CPC分类号： H04B10/2931

摘要： A Self-adapting feed forward control apparatus in an optical amplifier includes a feed forward controller for collecting target output power (Pout) and controlling drive current of a pump laser in the optical amplifier; a feedback controller for calculating target output power (Pt) and collecting actual output power (Pout), calculating deviation between (Pt) and (Pout), and controlling drive current of the pump laser; and a parameter estimator for collecting power target, output power and summation of output signal of the feed forward controller and feedback controller, and estimating the feed forward parameter and updating the parameter of the feed forward controller. The apparatus can automatically correct the feed forward control parameters according to the variation of EDFA parameters due to environmental condition changes or device aging.

摘要翻译： A光放大器中的自适应前馈控制装置包括用于收集目标输出功率（Pout）并控制光放大器中的泵浦激光器的驱动电流的前馈控制器; 用于计算目标输出功率（Pt）和采集实际输出功率（Pout），计算（Pt）和（Pout）之间的偏差并控制泵浦激光器的驱动电流的反馈控制器; 以及用于收集前馈控制器和反馈控制器的功率目标，输出功率和输出信号的总和的参数估计器，并估计前馈参数并更新前馈控制器的参数。 根据环境条件变化或器件老化，EDFA参数的变化可以自动校正前馈控制参数。

公开(公告)号：US08488233B2

公开(公告)日：2013-07-16

申请号：US12571546

申请日：2009-10-01

申请人： Bichang Huang ,  Aihua Yu

发明人： Bichang Huang ,  Aihua Yu

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/06754 ,  H01S3/0064 ,  H01S3/0078 ,  H01S3/10015 ,  H01S3/1305 ,  H01S3/1608 ,  H01S2301/02 ,  H04B10/291

摘要： The invention discloses an apparatus for enhancing the signal power to ASE power ratio in an optical amplifier including a 1×n input optical switching component, n band-pass filters, and an n×1 output optical switching component, wherein the signal power is allowed to pass through the band-pass filter switched by the 1×n input optical switching component and the n×1 output optical switching component.

摘要翻译： 本发明公开了一种用于增强包括1×n输入光开关元件，n个带通滤波器和n×1输出光开关元件的光放大器中的ASE功率比的信号功率的装置，其中允许信号功率 通过由1×n输入光开关元件和n×1输出光开关元件切换的带通滤波器。

公开(公告)号：US08139286B2

公开(公告)日：2012-03-20

申请号：US12411849

申请日：2009-03-26

申请人： Bichang Huang ,  Aihua Yu

发明人： Bichang Huang ,  Aihua Yu

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/2931

摘要： A Self-adapting feed forward control apparatus in an optical amplifier includes a feed forward controller for collecting target output power (Pout) and controlling drive current of a pump laser in the optical amplifier; a feedback controller for calculating target output power (Pt) and collecting actual output power (Pout), calculating deviation between (Pt) and (Pout), and controlling drive current of the pump laser; and a parameter estimator for collecting power target, output power and summation of output signal of the feed forward controller and feedback controller, and estimating the feed forward parameter and updating the parameter of the feed forward controller. The apparatus can automatically correct the feed forward control parameters according to the variation of EDFA parameters due to environmental condition changes or device aging.

摘要翻译： A光放大器中的自适应前馈控制装置包括用于收集目标输出功率（Pout）并控制光放大器中的泵浦激光器的驱动电流的前馈控制器; 用于计算目标输出功率（Pt）和采集实际输出功率（Pout），计算（Pt）和（Pout）之间的偏差并控制泵浦激光器的驱动电流的反馈控制器; 以及用于收集前馈控制器和反馈控制器的功率目标，输出功率和输出信号的总和的参数估计器，并估计前馈参数并更新前馈控制器的参数。 根据环境条件变化或器件老化，EDFA参数的变化可以自动校正前馈控制参数。

公开(公告)号：US20090052015A1

公开(公告)日：2009-02-26

申请号：US12195864

申请日：2008-08-21

申请人： Zhigang Wang ,  Aihua Yu

发明人： Zhigang Wang ,  Aihua Yu

IPC分类号： H01S3/00

CPC分类号： H01S3/06754 ,  H01S3/0014 ,  H01S3/1616 ,  H01S2301/04

摘要： A method for acquiring spectrum shape of a gain flattening filter of a doped optical fiber amplifier comprises the steps of: measuring spectrum shapes at two gain point (H, L) of the doped optical fiber with invariable fiber length respectively; and acquiring various gain spectrums of the doped optical fiber with various fiber length and various population inversion level according to an expression: ErGain(λ,x,L′)=[ErLGain(λ)+[ErHGain(λ)−ErLGain(λ)]*x]*L′, Wherein Gain(λ) refers to the spectral function of gain, x is Δ′inv/Δinv which refers to change of population inversion level, and L′ is set as proportion of doped fiber length. Gain spectrums of the doped optical fiber with various fiber length can be acquired by measuring spectrum shapes at two gain point (H, L) of the doped optical fiber in invariable fiber length and applying change rule of gain spectrum of the doped optical fiber in different population inversion level, which improves the flexibility for design of amplifier.

摘要翻译： 一种用于获取掺杂光纤放大器的增益平坦滤波器的光谱形状的方法，包括以下步骤：分别测量具有不变光纤长度的掺杂光纤的两个增益点（H，L）处的光谱形状; 并且根据以下表达式获取具有各种光纤长度和各种总体反转电平的掺杂光纤的各种增益光谱：<？in-line-formula description =“In-line Formulas”end =“lead”？> ErGain（λ， x，L'）= [ErLGain（lambda）+ [ErHGain（lambda）-ErLGain（lambda）] * x] * L'，<？in-line-formula description =“In-line Formulas”end =“tail” ？>其中增益（lambda）是指增益的光谱函数，x是Delta'inv / Deltainv，其指的是群体反转级别的变化，L'被设置为掺杂光纤长度的比例。 通过以不变的光纤长度测量掺杂光纤的两个增益点（H，L）处的光谱形状，并将掺杂光纤的增益光谱的变化规则应用于不同的光纤中，可以获得具有各种光纤长度的掺杂光纤的增益谱 人口反演水平提高了放大器设计的灵活性。