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1. 发明申请

WO2002075967A1 NONLINEAR DEVICE COMPRISING A SPECTRALLY BROADENING FIBER 审中-公开
标题翻译：包含光谱宽带光纤的非线性器件
公开(公告)号：WO2002075967A1
公开(公告)日：2002-09-26
申请号：PCT/US2002/007862
申请日：2002-03-13
申请人： FITEL USA CORPORATION , EGGLETON, Benjamin, J. , HER, Tsing, Hua , HUNSCHE, Stefan , RAYBON, Gregory , ROGERS, John, A. , WESTBROOK, Paul, S.
发明人： EGGLETON, Benjamin, J. , HER, Tsing, Hua , HUNSCHE, Stefan , RAYBON, Gregory , ROGERS, John, A. , WESTBROOK, Paul, S.
IPC分类号： H04B10/00
CPC分类号： H04B10/2569 , H04B10/077 , H04B10/07955 , H04B10/299
摘要： Embodiments of the invention include system for monitoring the effectiveness of pulse shaping in a nonlinear optical fiber (40). The spectral content of the pulse, after passing through the nonlinear fiber (40), provides an indication of how effectively the pulse was regenerated. A portion of the pulse exiting the nonlinear fiber is tapped off and its pulse energy is measured in at least one selected spectral region. The selected spectral region is one in which the pulse tends to gain energy when effective regeneration is taking place. The information concerning the effectiveness of pulse shaping in a nonlinear optical fiber is fed back to dynamically change the residual dispersion at the regenerator input. The spectral measurement leads to a control signal (48) to indicate a level of performance of the system, or to improve the performance of the system by adjusting an operational parameter.
摘要翻译：本发明的实施例包括用于监测非线性光纤（40）中的脉冲整形有效性的系统。通过非线性光纤（40）后脉冲的光谱含量提供脉冲再生的有效指示。离开非线性光纤的脉冲的一部分被分离，并且其脉冲能量在至少一个选定的光谱区域中被测量。所选择的光谱区域是当发生有效再生时脉冲倾向于获得能量的光谱区域。关于非线性光纤中的脉冲整形的有效性的信息被反馈以动态地改变再生器输入端的残余色散。频谱测量导致控制信号（48）以指示系统的性能水平，或通过调整操作参数来提高系统的性能。

2. 发明申请

WO2012075474A2 DFB FIBER LASER BEND SENSOR AND OPTICAL HETERODYNE MICROPHONE 审中-公开
标题翻译： DFB光纤激光弯曲传感器和光学异形麦克风
公开(公告)号：WO2012075474A2
公开(公告)日：2012-06-07
申请号：PCT/US2011/063194
申请日：2011-12-02
申请人： OFS FITEL, LLC , ABEDIN, Kazi, S. , WESTBROOK, Paul, S.
发明人： ABEDIN, Kazi, S. , WESTBROOK, Paul, S.
IPC分类号： G01N21/75
CPC分类号： G01D5/268 , G01D5/35316 , G01D5/3537 , G01D5/3538 , G01H9/004 , G01J1/0425 , G01L1/243 , G01L1/246 , G01L11/025 , G01N2021/7716 , H04R23/008
摘要： Methods and systems using one or more distributed feedback (DFB) lasers for capturing changes in the lasing environment are disclosed, Specifically, a sensor for measuring a measurand, such as pressure or temperature, or changes in a measurand, includes a fiber with at least one core, at least one fiber laser cavity formed by a single fiber grating in the core, wherein the laser operates on at least two modes along at least part of its length. The DFB laser includes a section that is bent into a non-linear shape and at least one pump laser connected to the fiber laser cavity. When the DFB laser experiences a perturbation or measurand change that changes the spacing of the modes, a change in an RF beat note is generated. This beat note can then be measured and related to the measurand change.
摘要翻译：公开了使用一个或多个用于捕获激光环境中的变化的分布反馈（DFB）激光器的方法和系统。具体地，用于测量被测量的传感器，例如压力或温度，或被测量的变化，包括具有至少一个核心，至少一个光纤激光器腔，其由芯中的单个光纤光栅形成，其中所述激光器沿其长度的至少一部分沿至少两个模式工作。 DFB激光器包括弯曲成非线性形状的部分和连接到光纤激光腔的至少一个泵激光器。当DFB激光器经历改变模式间隔的扰动或被测量的变化时，产生RF拍音的变化。然后可以测量这个拍音，并与被测量的变化相关。

3. 发明申请

WO2012075474A3 DFB FIBER LASER BEND SENSOR AND OPTICAL HETERODYNE MICROPHONE 审中-公开
标题翻译： DFB光纤激光弯曲传感器和光学异形麦克风
公开(公告)号：WO2012075474A3
公开(公告)日：2013-07-25
申请号：PCT/US2011063194
申请日：2011-12-02
申请人： OFS FITEL LLC , ABEDIN KAZI S , WESTBROOK PAUL S
发明人： ABEDIN KAZI S , WESTBROOK PAUL S
IPC分类号： G02B6/00
CPC分类号： G01D5/268 , G01D5/35316 , G01D5/3537 , G01D5/3538 , G01H9/004 , G01J1/0425 , G01L1/243 , G01L1/246 , G01L11/025 , G01N2021/7716 , H04R23/008
摘要： Methods and systems using one or more distributed feedback (DFB) lasers for capturing changes in the lasing environment are disclosed, Specifically, a sensor for measuring a measurand, such as pressure or temperature, or changes in a measurand, includes a fiber with at least one core, at least one fiber laser cavity formed by a single fiber grating in the core, wherein the laser operates on at least two modes along at least part of its length. The DFB laser includes a section that is bent into a non-linear shape and at least one pump laser connected to the fiber laser cavity. When the DFB laser experiences a perturbation or measurand change that changes the spacing of the modes, a change in an RF beat note is generated. This beat note can then be measured and related to the measurand change.
摘要翻译：公开了使用一个或多个分布反馈（DFB）激光器来捕获激光环境中的变化的方法和系统。具体地，用于测量被测量的传感器，例如压力或温度，或被测量的变化，包括至少具有纤维一个芯，由芯中的单个光纤光栅形成的至少一个光纤激光腔，其中所述激光器沿其长度的至少一部分沿至少两个模式工作。 DFB激光器包括弯曲成非线性形状的部分和连接到光纤激光腔的至少一个泵浦激光器。当DFB激光器经历改变模式间距的扰动或被测量的变化时，产生RF拍音的变化。然后可以测量这个拍音，并与被测量的变化相关。

4. 发明申请

WO2013020121A1 IN-LINE ARRANGEMENT FOR MEASURING POLARIZATION EXTINCTION RATIO 审中-公开
标题翻译：用于测量极化放电比例的在线布置
公开(公告)号：WO2013020121A1
公开(公告)日：2013-02-07
申请号：PCT/US2012/049662
申请日：2012-08-03
申请人： OFS FITEL, LLC , MIKHAILOV, Vitaly , WESTBROOK, Paul, S.
发明人： MIKHAILOV, Vitaly , WESTBROOK, Paul, S.
IPC分类号： G01J4/04
CPC分类号： G01J4/04 , G01J1/0425 , G01M11/337 , G01M11/35 , G02B6/02076 , G02B6/024
摘要： An in-line polarization extinction ratio (PER) monitor that generates a value of an optical signal's PER from a single measurement, without requiring the optical transmission signal path of the system to be directly coupled into a separate measurement device. The polarization extinction ratio may be defined as: 1010g(P Ex /P Ey ), where P Ex is the power of the optical signal propagating along the "x axis" and P Ey is the power propagating along the orthogonal "y axis" (with the z-axis defined as a longitudinal optical axis of the system and the x-y plane orthogonal to this direction of propagation). The PER monitor comprises a section of optical fiber (preferably birefringent or with induced birefringency), with a pair of gratings formed along the fiber and oriented to out-couple orthogonal components of the propagating signal. Photodetectors are used to convert the scattered light into electrical signal equivalents and then processed to yield the PER value.
摘要翻译：线性偏振消光比（PER）监视器，其从单个测量产生光信号的PER值，而不需要将系统的光传输信号路径直接耦合到单独的测量装置中。偏振消光比可以定义为：1010g（PEx / PEy），其中PEx是沿着“x轴”传播的光信号的功率，而PEy是沿着正交“y轴”传播的功率（z- 轴定义为系统的纵向光轴和与该传播方向正交的xy平面）。 PER监测器包括一段光纤（优选双折射或具有诱导双折射），一对光栅沿着光纤形成并且定向成输出传播信号的正交分量。光检测器用于将散射光转换为电信号等效物，然后进行处理以产生PER值。

5. 发明申请

WO2012154703A1 METHODS AND SYSTEMS FOR BULK DISPERSION MONITORING 审中-公开
标题翻译：用于大容量分散监测的方法和系统
公开(公告)号：WO2012154703A1
公开(公告)日：2012-11-15
申请号：PCT/US2012/036856
申请日：2012-05-07
申请人： OFS FITEL, LLC , MIKHAILOV, Vitaly , WESTBROOK, Paul, S.
发明人： MIKHAILOV, Vitaly , WESTBROOK, Paul, S.
IPC分类号： H04B10/12
CPC分类号： H04B10/07951 , H04B10/0775 , H04B2210/07
摘要： A method and system for measuring chromatic dispersion, experienced by ASK/PSK modulated optical signals, are provided. Dispersion measurement is enabled either by encoding an additional overhead at lower baud rate or by monitoring signal SOP or RF spectrum of signal SOP. The bulk chromatic dispersion of the link is measured by analyzing the dispersion broadening of the overhead constellation or signal temporal diagram, or time-overlapped signal diagram, or overhead spectrum. This information is used to reduce the computation time required for electronic recovery of a highly dispersed signal.
摘要翻译：提供了用于测量由ASK / PSK调制的光信号所经历的色散的方法和系统。通过以较低波特率编码附加开销或通过监视信号SOP的信号SOP或RF频谱来启用色散测量。通过分析开销星座或信号时间图或时间重叠信号图或架空频谱的色散扩展来测量链路的体色散。该信息用于减少电子恢复高分散信号所需的计算时间。

6. 发明申请

WO2012149068A1 RAMAN DISTRIBUTED FEEDBACK FIBER LASER AND HIGH POWER LASER SYSTEM USING THE SAME 审中-公开
标题翻译：拉曼分布式反馈光纤激光器和使用该激光器的高功率激光系统
公开(公告)号：WO2012149068A1
公开(公告)日：2012-11-01
申请号：PCT/US2012/035065
申请日：2012-04-25
申请人： OFS FITEL, LLC , ABEDIN, Kazi, S. , KREMP, Tristan , PORQUE, Jerome, C. , NICHOLSON, Jeffrey, W. , WESTBROOK, Paul, S.
发明人： ABEDIN, Kazi, S. , KREMP, Tristan , PORQUE, Jerome, C. , NICHOLSON, Jeffrey, W. , WESTBROOK, Paul, S.
IPC分类号： H01S3/30
CPC分类号： H01S3/302 , H01S3/0014 , H01S3/06712 , H01S3/0675 , H01S3/07 , H01S3/08022 , H01S3/0826 , H01S3/094003 , H01S3/094042 , H01S3/094046 , H01S3/1086
摘要： A Raman distributed feedback (DFB) fiber laser is disclosed. It includes a pump source and a Raman gain fiber of a length smaller than 20 cm containing a distributed feedback (DFB) grating with a discrete phase structure located within no more than 10 % off the center of the grating and wherein the Raman DFB fiber laser generates a laser signal with an optical spectrum, which has an optical bandwidth at half maximum optical intensity of less than 1 gigahertz (GHz) (wherein a maximum intensity frequency is different from the frequency of the pump laser). The Raman laser includes compensation for the nonlinear phase change due to Kerr effect and thermal effect resulting from absorption of the optical field, thus enhancing the conversion efficiency.
摘要翻译：公开了一种拉曼分布反馈（DFB）光纤激光器。它包括长度小于20厘米的泵浦源和拉曼增益光纤，其包含分布反馈（DFB）光栅，离散相位结构位于离光栅中心不超过10％的范围内，其中拉曼DFB光纤激光器产生具有小于1千兆赫兹（GHz）的最大光强度的光学带宽（其中最大强度频率与泵浦激光器的频率不同）的光谱的激光信号。拉曼激光器包括由于克尔效应引起的非线性相位变化和由光场吸收产生的热效应的补偿，从而提高转换效率。

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