公开(公告)号：US20090086311A1

公开(公告)日：2009-04-02

申请号：US12184543

申请日：2008-08-01

申请人： Christophe Dorrer ,  Andrey Okishev ,  IIdar Begishev ,  Jonathan Zuegel

发明人： Christophe Dorrer ,  Andrey Okishev ,  IIdar Begishev ,  Jonathan Zuegel

IPC分类号： H01S3/00

CPC分类号： H01S3/235 ,  G02F2001/392 ,  H01S3/0057

摘要： Method and apparatus embodiments of the invention are directed to mitigating temporal contrast degradation in optical parametric chirped pulse amplification (OPCPA) laser systems. A spectral filter is used in an OPCPA laser system to remove or reduce of out-of-band amplified spontaneous emission (ASE) from an amplified pump pulse and/or the longitudinal modes of a seed laser used to generate the pump pulse, which typically cause detrimental temporal intensity fluctuations in the amplified pump signal. According to an illustrative embodiment, a volume Bragg grating (VBG) filter element is disposed in the pump regenerative amplifier cavity where the pump pulse undergoes multiple passes on the filter element.

摘要翻译： 本发明的方法和装置实施例旨在减轻光参量啁啾脉冲放大（OPCPA）激光系统的时间对比度降低。 在OPCPA激光系统中使用光谱滤波器以从放大的泵浦脉冲和/或用于产生泵浦脉冲的种子激光器的纵向模式中去除或减少带外放大的自发发射（ASE），其通常 引起放大的泵浦信号中的有害的时间强度波动。 根据说明性实施例，体积布拉格光栅（VBG）滤波器元件设置在泵再生放大器腔中，其中泵浦脉冲在滤波器元件上经过多次通过。

公开(公告)号：US07298465B2

公开(公告)日：2007-11-20

申请号：US11227051

申请日：2005-09-15

申请人： Christophe Dorrer

发明人： Christophe Dorrer

IPC分类号： G01N21/00

CPC分类号： G01M11/333 ,  G01M11/332 ,  G01M11/335 ,  G01M11/336

摘要： Temporal phase shifts induced by cross-phase modulation in an optical fiber are directly characterized with a spectral equivalent of the Foucault technique used to spatially resolve wavefronts. The temporal phase induced by a high power pulsed pump on a monochromatic probe via cross-phase modulation is converted in a temporal intensity modulation via spectral filtering. A measurement of the modulated instantaneous power of the filtered signal allows to directly determine the time-resolved nonlinear phase shift. Additionally, an equivalent of the transport-of-intensity equation, which links the evolution of the instantaneous power of the electric field in a dispersive medium to the instantaneous values of the power and phase of the field. This derivation permits the measurement of temporal phase shifts using only intensity information in a direct, non-interferometric manner.

摘要翻译： 通过光纤中的交叉相位调制引起的时态相移直接用用于空间解析波前的傅科技术的频谱等效表征。 通过相位调制在单色探头上由大功率脉冲泵引起的时间相位通过频谱滤波在时间强度调制中转换。 滤波信号的调制瞬时功率的测量允许直接确定时间分辨非线性相移。 另外，等效传输强度方程，其将分散介质中电场的瞬时功率的演变与场的功率和相位的瞬时值相关联。 该推导允许以直接的，非干涉的方式仅使用强度信息来测量时间相移。

公开(公告)号：US20070153291A1

公开(公告)日：2007-07-05

申请号：US11322613

申请日：2005-12-30

申请人： Christophe Dorrer

发明人： Christophe Dorrer

IPC分类号： G01B9/02

CPC分类号： G01J11/00 ,  G01J9/04

摘要： Time magnification and heterodyning are combined to allow the single-shot characterization of the electric field of optical waveforms. The electric field of the source under test is obtained by Fourier processing of the magnified temporal intensity of the source heterodyned with a monochromatic source. An experimental implementation of this technique is characterized and used to measure various optical signals.

摘要翻译： 时间放大和外差被组合以允许光学波形的电场的单次表征。 通过傅立叶处理由单色源外置的源的放大时间强度获得被测源的电场。 该技术的实验实现被表征并用于测量各种光信号。

公开(公告)号：US20050243907A1

公开(公告)日：2005-11-03

申请号：US10835023

申请日：2004-04-29

申请人： Christophe Dorrer ,  Xiang Liu

发明人： Christophe Dorrer ,  Xiang Liu

IPC分类号： H04B10/08 ,  H04B17/00 ,  H04L27/20

CPC分类号： H04B10/07953 ,  H04L27/2003

摘要： A method and apparatus for monitoring PSK optical signals by measuring the RF spectrum of the signal and determining the power spectral density of noise on the optical signal within a predetermined frequency range to determine a measure of the degradation of the optical signal.

摘要翻译： 一种用于通过测量信号的RF频谱并且在预定频率范围内确定光信号上的噪声的功率谱密度来确定光信号劣化的度量来监视PSK光信号的方法和装置。

公开(公告)号：US20050024645A1

公开(公告)日：2005-02-03

申请号：US10629379

申请日：2003-07-28

申请人： Christophe Dorrer

发明人： Christophe Dorrer

IPC分类号： G01B9/02 ,  G01J3/12 ,  G01J11/00 ,  G01M11/00

CPC分类号： G01M11/333 ,  G01J3/12 ,  G01J11/00 ,  G01M11/332 ,  G01M11/338

摘要： A method and apparatus for measuring the group delay of a device are provided. The temporal and spectral intensities of optical pulses are measured after propagation in the device and the group delay of the device is determined using the measured intensities.

摘要翻译： 提供了一种用于测量设备的组延迟的方法和设备。 光脉冲的时间和光谱强度在器件中传播后测量，并且使用测量的强度来确定器件的群延迟。

公开(公告)号：US20050185968A1

公开(公告)日：2005-08-25

申请号：US10815033

申请日：2004-03-31

申请人： Christophe Dorrer ,  Alan Gnauck ,  Inuk Kang ,  Chongjin Xie

发明人： Christophe Dorrer ,  Alan Gnauck ,  Inuk Kang ,  Chongjin Xie

IPC分类号： G02F1/03 ,  H04B10/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/135 ,  H04B10/142 ,  H04B10/152 ,  H04B10/155 ,  H04B10/18

CPC分类号： H04B10/5055 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/532 ,  H04B10/5561

摘要： Methods and apparatus are provided for transmitting alternate-polarization phase-shift-keyed data. The output of a laser is modulated to optically encode electronic data using phase shift keying (PSK) to generate an optical signal. An alternate polarization PSK (APol-PSK) signal is generated by alternating the polarization of the optical signal using a modulator such that successive optical bits have substantially orthogonal polarizations.

摘要翻译： 提供了用于发送交替偏振相移键控数据的方法和装置。 调制激光器的输出以使用相移键控（PSK）对电子数据进行光学编码以产生光信号。 通过使用调制器交替光信号的偏振来产生交替偏振PSK（APol-PSK）信号，使得连续的光学位具有基本正交的偏振。

公开(公告)号：US20050168792A1

公开(公告)日：2005-08-04

申请号：US10766977

申请日：2004-01-29

申请人： Christophe Dorrer ,  Inuk Kang

发明人： Christophe Dorrer ,  Inuk Kang

IPC分类号： G01J1/34 ,  G01J11/00 ,  G02F1/03 ,  G02F1/07

CPC分类号： G01J11/00

摘要： An optical sampling method and apparatus are provided for modulating an optical signal using a first electroabsorption modulator (EAM) driven by a sinusoidal RF voltage signal to provide substantially jitter free temporal gating of the optical signal. The gated optical signal from the first EAM is routed through a second EAM to provide an optical output signal having a reduced repetition rate. The second EAM is driven using an electrical pulse train having a repetition rate that is a subharmonic of the frequency of the sinusoidal RF voltage signal driving the first EAM.

摘要翻译： 提供了一种光采样方法和装置，用于使用由正弦RF电压信号驱动的第一电吸收调制器（EAM）来调制光信号，以提供光信号的基本上无抖动的时间门控。 来自第一EAM的门控光信号通过第二EAM被路由以提供具有降低的重复率的光输出信号。 使用具有驱动第一EAM的正弦RF电压信号的频率的次谐波的重复频率的电脉冲串来驱动第二EAM。

公开(公告)号：US20170248491A1

公开(公告)日：2017-08-31

申请号：US15054874

申请日：2016-02-26

申请人： Christophe Dorrer

发明人： Christophe Dorrer

IPC分类号： G01M11/00

CPC分类号： G01J11/00

摘要： The disclosure relates to the measurement of temporal characteristics of optical pulses. Embodiments may be used for single-shot characterization of picosecond optical pulses. The optical pulse may be split into a plurality of ancillary pulses. Amounts of distortion may be added to the plurality of ancillary pulses. An instantaneous power of the plurality of ancillary pulses may be measured. Thereafter, an experimental trace with the measured instantaneous powers may be constructed and the experimental trace may be outputted. The experimental trace may be processed to calculate temporal characteristics of the input optical pulse. A fiber assembly may be used to split the pulse into the plurality of ancillary pulses. The fiber assembly may include one or more splitters. The one or more splitters may direct the ancillary pulses along different optical paths having different lengths to temporally separate the ancillary pulses and to add amounts of distortion.

公开(公告)号：US20070081223A1

公开(公告)日：2007-04-12

申请号：US11245760

申请日：2005-10-07

申请人： Christophe Dorrer ,  Dan Marom

发明人： Christophe Dorrer ,  Dan Marom

IPC分类号： G02B26/00

CPC分类号： H04B10/505 ,  G02B26/0833 ,  H04B10/5053

摘要： The invention includes a method and apparatus for modulating one or both of spectral phase and amplitude of a received optical signal. The apparatus includes a spatial dispersion mechanism for spatially dispersing the received optical signal to enable optical communication of the received optical signal to an array of modulators. The apparatus includes a modulating mechanism having a first modulating component and a second modulating component. A first portion of the spatially dispersed optical signal is incident on the first modulating component and a second portion of the spatially dispersed optical signal is incident on the second modulating portion. The apparatus further includes a controller coupled to the modulating mechanism. The controller is adapted for moving the first and second modulating components in a direction normal to their planes for modulating one or both of phase and amplitude of the received optical signal.

摘要翻译： 本发明包括一种用于调制所接收的光信号的频谱相位和幅度之一或两者的方法和装置。 该装置包括空间分散机构，用于空间分散接收的光信号，以使所接收的光信号能够与调制器的阵列进行光通信。 该装置包括具有第一调制部件和第二调制部件的调制机构。 空间分散的光信号的第一部分入射到第一调制分量上，空间分散的光信号的第二部分入射到第二调制部分上。 该装置还包括耦合到调制机构的控制器。 控制器适于沿着与其平面垂直的方向移动第一和第二调制分量，用于调制所接收的光信号的相位和幅度之一或两者。

公开(公告)号：US20070071385A1

公开(公告)日：2007-03-29

申请号：US11236291

申请日：2005-09-27

申请人： Christophe Dorrer ,  Dan Marom

发明人： Christophe Dorrer ,  Dan Marom

IPC分类号： G02B6/26 ,  G02B6/12

CPC分类号： G02B6/12019 ,  G02B6/3512

摘要： An optical pulse shaper without polarization dependencies includes, a planar lightwave circuit (PLC) having an arrayed waveguide and free space optics, combined with a lens and micromirror array characterized by piston-motion. The micromirror array is coupled to a controller that provides signals to the array for adjusting the positions of the micromirrors, which are used as a spatial light modulator to provide at least phase modulation to one or more of the separated frequency components of an input optical signal. The frequency separated components, including modified components, are recombined and directed back to the PLC to form a synthesized optical pulse. Information regarding the characteristics of the synthesized optical pulse is extracted from a spectrogram of that pulse. Extracted information is provided to the controller and responsive thereto the controller may generate signals for adjusting the position of one or more micromirrors.