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21. 发明授权

US07068943B2 Devices and methods for dynamic dispersion compensation 失效
标题翻译：用于动态色散补偿的装置和方法
公开(公告)号：US07068943B2
公开(公告)日：2006-06-27
申请号：US10778979
申请日：2004-02-13
申请人： Andrey E. Korolev , Dmitri V. Kuksenkov , Shenping Li , Daniel A. Nolan , Michael Sauer , Alexej Sysoliatin
发明人： Andrey E. Korolev , Dmitri V. Kuksenkov , Shenping Li , Daniel A. Nolan , Michael Sauer , Alexej Sysoliatin
IPC分类号： H04B10/12
CPC分类号： H04B10/2525
摘要： The present invention provides devices and methods for dynamic dispersion compensation. According to one embodiment of the invention, a dispersion compensating device includes a negative dispersion fiber having an input configured to receive the optical signal, the negative dispersion fiber having a length and dispersion sufficient to remove any positive chirp from each wavelength channel of the optical signal, thereby outputting a negatively chirped optical signal; an amplifying device configured to amplify the negatively chirped optical signal; and a nonlinear positive dispersion fiber configured to receive the negatively chirped optical signal. The devices of the present invention provide broadband compensation for systems having a wide range of variable residual dispersions.
摘要翻译：本发明提供了用于动态色散补偿的装置和方法。根据本发明的一个实施例，色散补偿装置包括具有被配置为接收光信号的输入的负色散光纤，负色散光纤具有足以从光信号的每个波长信道去除任何正线性调频脉冲的长度和色散从而输出负啁啾的光信号; 放大装置，被配置为放大所述负啁啾光信号; 以及配置成接收负啁啾光信号的非线性正色散光纤。本发明的装置为具有宽范围的可变残余分散的系统提供宽带补偿。

22. 发明授权

US06959135B1 SBS suppressed nonlinear optical fiber 失效
标题翻译： SBS抑制非线性光纤
公开(公告)号：US06959135B1
公开(公告)日：2005-10-25
申请号：US11019722
申请日：2004-12-21
申请人： Scott R. Bickham , Dmitri V. Kuksenkov , Shenping Li
发明人： Scott R. Bickham , Dmitri V. Kuksenkov , Shenping Li
IPC分类号： G02B6/00 , G02B6/02 , G02B6/036 , G02B6/10
CPC分类号： G02B6/02028 , G02B6/0281 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/03666 , G02B6/29377
摘要： An optical waveguide fiber having a high threshold for stimulated Brillouin scattering is disclosed which is suitable as a nonlinear fiber. The optical fiber has a core with one or more core segments. The optical effective area at a wavelength of 1550 nm is less that 30 μm2.
摘要翻译：公开了一种适用于非线性光纤的具有高受激布里渊散射阈值的光波导光纤。光纤具有具有一个或多个核心段的核心。在1550nm波长处的光学有效面积小于30μm2。

23. 发明授权

US08573785B2 Wavelength-switched optical systems 有权
标题翻译：波长切换光学系统
公开(公告)号：US08573785B2
公开(公告)日：2013-11-05
申请号：US12952260
申请日：2010-11-23
申请人： Dmitri Vladislavovich Kuksenkov , Shenping Li , Dragan Pikula , Rostislav Vatchev Roussev
发明人： Dmitri Vladislavovich Kuksenkov , Shenping Li , Dragan Pikula , Rostislav Vatchev Roussev
IPC分类号： G03B21/00 , G03B21/26 , G02F1/35 , G02F2/02 , H01S3/10
CPC分类号： H04N9/3161 , G02F1/3775 , G03B21/2033 , G03B21/40
摘要： Optical systems operable to emit an output beam having fast-switched wavelengths are provided. In one embodiment, an optical system includes a laser and a wavelength conversion device. The laser emits a pump beam that switches between at least two fundamental spectral peaks at different wavelengths at a wavelength cycling period that is shorter than a response time of the human eye. The wavelength conversion device includes a non-linear optical medium configured to phase match the frequency doubling of the at least two switched fundamental spectral peaks such that an output beam that switches between at least two frequency-converted spectral peaks at different converted-wavelengths is emitted from an output facet of the wavelength conversion device when the pump beam of the optical source is incident on an input facet of the wavelength conversion device.
摘要翻译：提供可操作以发射具有快速切换波长的输出光束的光学系统。在一个实施例中，光学系统包括激光器和波长转换装置。激光器发射泵浦光束，其在比人眼的响应时间短的波长循环周期在不同波长的至少两个基本光谱峰之间切换。波长转换装置包括非线性光学介质，其被配置为相互匹配至少两个切换的基本频谱峰值的倍频，使得在不同转换波长的至少两个频率转换的频谱峰值之间切换的输出光束被发射当所述光源的泵浦光束入射到所述波长转换装置的输入端面时，从所述波长转换装置的输出小面。

24. 发明申请

US20130114635A1 Heating Elements For Multi-Wavelength DBR Laser 有权
标题翻译：多波长DBR激光加热元件
公开(公告)号：US20130114635A1
公开(公告)日：2013-05-09
申请号：US13292385
申请日：2011-11-09
申请人： Dmitri Vladislavovich Kuksenkov , Shenping Li , Hong Ky Nguyen , Chung-En Zah
发明人： Dmitri Vladislavovich Kuksenkov , Shenping Li , Hong Ky Nguyen , Chung-En Zah
IPC分类号： H01S5/125
CPC分类号： H01S5/0612 , H01S5/0261 , H01S5/06256 , H01S5/1096 , H01S5/1209 , H01S5/1218 , H01S5/1234 , H01S5/125
摘要： A multi-wavelength distributed Bragg reflector (DBR) semiconductor laser is provided where DBR heating elements are positioned over the waveguide in the DBR section and define an interleaved temperature profile that generates multiple distinct reflection peaks corresponding to distinct temperature dependent Bragg wavelengths associated with the temperature profile. Neighboring pairs of heating elements of the DBR heating elements positioned over the waveguide in the DBR section are spaced along the direction of the axis of optical propagation by a distance that is equal to or greater than the laser chip thickness b to minimize the impact of thermal crosstalk between distinct temperature regions of the interleaved temperature profile.
摘要翻译：提供了一种多波长分布布拉格反射器（DBR）半导体激光器，其中DBR加热元件位于DBR部分中的波导上方，并且限定了交错的温度分布，其产生对应于与温度相关的不同的温度相关布拉格波长的不同反射峰个人资料位于DBR部分的波导上的DBR加热元件的相邻的加热元件对沿着光学传播轴的方向间隔开等于或大于激光器芯片厚度b的距离，以最小化热的影响交错温度曲线的不同温度区域之间的串扰。

25. 发明申请

US20110286477A1 Multiple Wavelength Optical Systems 失效
标题翻译：多波长光学系统
公开(公告)号：US20110286477A1
公开(公告)日：2011-11-24
申请号：US12782205
申请日：2010-05-18
申请人： Dmitri Vladislavovich Kuksenkov , Shenping Li , Rostislav Vatchev Roussev
发明人： Dmitri Vladislavovich Kuksenkov , Shenping Li , Rostislav Vatchev Roussev
IPC分类号： H01S3/10
CPC分类号： G02F1/3775 , G02F1/3532 , G02F1/3558 , G02F2001/3548 , H01S5/0092 , H01S5/0615 , H01S5/06256 , H01S5/1096
摘要： Optical systems operable to emit multiple frequency-converted spectral peaks are provided. In one embodiment, an optical system includes an optical source and a wavelength conversion device. The optical source may include a laser configured to emit a pump beam having at least two fundamental spectral peaks. The wavelength conversion device may include a non-linear optical medium configured to phase match the second harmonic generation of each of the at least two fundamental spectral peaks and sum-frequency generation of the at least two fundamental spectral peaks such that an output beam comprising at least three frequency-converted spectral peaks having approximately equal power is emitted from an output facet of the wavelength conversion device when the pump beam of the optical source is incident on an input facet of the wavelength conversion device.
摘要翻译：提供可操作以发射多个频率转换的光谱峰值的光学系统。在一个实施例中，光学系统包括光源和波长转换装置。光源可以包括配置成发射具有至少两个基本光谱峰值的泵浦光束的激光器。波长转换装置可以包括非线性光学介质，其被配置为使至少两个基本频谱峰值中的每一个的二次谐波产生相位匹配，并且至少两个基本频谱峰值的和频产生，使得包括在当光源的泵浦光束入射到波长转换装置的输入端面上时，从波长转换装置的输出端发射具有近似相等功率的至少三个频率转换的频谱峰值。

26. 发明授权

US07978742B1 Methods for operating diode lasers 有权
标题翻译：二极管激光器的运行方法
公开(公告)号：US07978742B1
公开(公告)日：2011-07-12
申请号：US12730482
申请日：2010-03-24
申请人： Dmitri Vladislavovich Kuksenkov , Shenping Li
发明人： Dmitri Vladislavovich Kuksenkov , Shenping Li
IPC分类号： H01S3/00
CPC分类号： A61F11/002 , H01S5/0602 , H01S5/06251 , H01S5/06256
摘要： Methods for operating diode lasers are provided. According to one method, the diode laser comprises a wavelength selection section, a gain section and a saturable absorber. The method comprises applying a hybrid-control signal comprising a hybrid-control DC bias to the saturable absorber, and applying a hybrid-driving signal comprising a hybrid-driving DC bias and a hybrid-driving AC bias to the gain section. The hybrid signals are selected and the diode laser is configured such that a relatively high hybrid-control DC bias corresponds to a relatively low average of the output power of the diode laser, and a relatively low hybrid-control DC bias corresponds to a relatively high average of the output power of the diode laser. The hybrid-driving DC bias is between a switch-on threshold of the diode laser and a switch-off threshold of the diode laser, and the hybrid-driving AC bias is periodic. The hybrid-driving AC bias has a peak-to-peak amplitude greater than the difference between the switch-on threshold and the switch-off threshold.
摘要翻译：提供了操作二极管激光器的方法。根据一种方法，二极管激光器包括波长选择部分，增益部分和饱和吸收体。该方法包括将包括混合控制DC偏置的混合控制信号施加到可饱和吸收器，以及将包括混合驱动DC偏置和混合驱动AC偏置的混合驱动信号施加到增益部分。选择混合信号，并且二极管激光器被配置为使得相对高的混合控制DC偏压对应于二极管激光器的输出功率的相对较低的平均值，并且相对低的混合控制DC偏压对应于相对较高的平均二极管激光器的输出功率。混合驱动DC偏压在二极管激光器的接通阈值和二极管激光器的关断阈值之间，并且混合驱动AC偏压是周期性的。混合驱动AC偏压具有比接通阈值和关断阈值之间的差大的峰 - 峰幅度。

27. 发明申请

US20100040836A1 METHOD FOR PROVIDING SUB-SURFACE MARKS IN POLYMERIC MATERIALS 审中-公开
标题翻译：在聚合材料中提供亚表面标记的方法
公开(公告)号：US20100040836A1
公开(公告)日：2010-02-18
申请号：US12510360
申请日：2009-07-28
申请人： Shenping Li , Ellen M. Kosik Williams
发明人： Shenping Li , Ellen M. Kosik Williams
IPC分类号： B32B3/10 , B44C1/22
CPC分类号： B41M5/267 , Y10T428/24736
摘要： Disclosed herein are methods for making high-contrast sub-surface marks in transparent polymeric materials using femtosecond, picosecond or nanosecond pulsed fiber lasers. Systems for making sub-surface marks and transparent materials bearing marks made by the methods are also disclosed.
摘要翻译：本文公开了使用飞秒，皮秒或纳秒脉冲光纤激光器在透明聚合物材料中制造高对比度子表面标记的方法。还公开了用于制造亚表面标记的系统和由该方法制成的带有标记的透明材料。

28. 发明授权

US07486436B1 All fiber chirped pulse amplification system and method 失效
标题翻译：所有光纤啁啾脉冲放大系统及方法
公开(公告)号：US07486436B1
公开(公告)日：2009-02-03
申请号：US11729896
申请日：2007-03-29
申请人： Dmitri Vladislavovich Kuksenkov , Shenping Li
发明人： Dmitri Vladislavovich Kuksenkov , Shenping Li
IPC分类号： H01S4/00
CPC分类号： H01S3/0057 , G02B6/02304 , H01S3/06712 , H01S3/06725 , H01S3/06754 , H01S3/2308
摘要： An all-fiber chirped pulse amplification (CPA) system and method is provided that utilizes a hollow core photonic bandgap fiber as a pulse compressor and a dispersion compensating optical fiber as a pulse stretcher that are matched with respect to both the amount and slope of dispersion to avoid peak power-limiting pulse distortion. The CPA system includes a rare earth ion-doped optical fiber amplifier having an input and an output that amplifies optical pulses having a center wavelength of λc, a pulse compressing length L1 of hollow core photonic bandgap fiber having a dispersion value D1 and a dispersion slope S1 that varies over a wavelength λ of the pulses that is optically connected to the output of the fiber amplifier and having a k-parameter defined by a ratio of D1 over the slope of the function D1(λ) that is larger than about 50, and a pulse stretching length L2 of dispersion compensating optical fiber connected to the input of the fiber amplifier having a dispersion value D2 and dispersion slope S2. The lengths are selected such that L1D1=−L2D2, and the center wavelength λc of the inputted optical pulses is preferably close to the center wavelength of the bandgap of the photonic bandgap fiber.
摘要翻译：提供了全光纤啁啾脉冲放大（CPA）系统和方法，其利用空心光子带隙光纤作为脉冲压缩器和色散补偿光纤作为脉冲展宽器，其相对于色散的量和斜率都匹配以避免峰值功率限制脉冲失真。 CPA系统包括具有输入和输出的稀土离子掺杂光纤放大器，该输入和输出放大具有中心波长lambdac的光脉冲，具有色散值D1的空心光子带隙光纤的脉冲压缩长度L1和色散斜率 S1在与光纤放大器的输出光学连接的脉冲的波长λ上变化，并且具有由大于约50的函数D1（λ）的斜率上的D1的比率定义的k参数，以及连接到具有色散值D2和色散斜率S2的光纤放大器的输入的色散补偿光纤的脉冲拉伸长度L2。选择长度使得L1D1 = -L2D2，并且输入的光脉冲的中心波长lambdac优选地接近光子带隙光纤的带隙的中心波长。

29. 发明授权

US07027468B2 Phase-insensitive recovery of clock pulses of wavelength division multiplexed optical signals 失效
公开(公告)号：US07027468B2
公开(公告)日：2006-04-11
申请号：US10667932
申请日：2003-09-22
申请人： Krassimir Krastev , Dmitri V. Kuksenkov , Shenping Li
发明人： Krassimir Krastev , Dmitri V. Kuksenkov , Shenping Li
IPC分类号： H01S3/30 , H01S3/83
CPC分类号： H04L7/0075 , H04J14/02
摘要： An optically-pumped mode-locked fiber ring laser for optical clock recovery of multiple wavelength division multiplexed optical signals actively mode-locks a plurality of outputs of the laser as a plurality of recovered clocks for a plurality of the multiple wavelength division multiplexed optical signals. The laser cavity has a cavity length corresponding to an integer multiple of bit periods of at least one of the multiplexed optical signals for receiving a pre-amplified version of the plurality of wavelength division multiplexed optical signals to provide gain modulation through a phase-insensitive parametric amplification and recirculating a proportion of the output from the laser cavity back through the laser cavity for spatially mode-locking the output of the laser cavity as a recovered clock whereby the recovered optical clock each having a periodic train of optical pulses with a repetition rate corresponding to the clock rate of the corresponding multiplexed optical signal is generated by mode-locking of the optically-pumped laser produced by a spatial modulation of the phase-insensitive parametric gain produced by the pulsed nature of the wavelength division multiplexed optical signals. A nonlinear gain medium disposed in the cavity has a sufficiently large dispersion at all of the wavelengths corresponding to the multiple wavelength multiplexed optical signals for minimizing four-wave mixing crosstalk among the multiple wavelength multiplexed optical signals, among the recovered clocks, and between the plurality of multiple wavelength multiplexed optical signals and the recovered clocks. The gain medium is pumped by the plurality of pre-amplified multiplexed optical signals to provide efficient gain modulation through the phase-insensitive parametric amplification at a plurality of narrow wavelength bands, each of the plurality of narrow wavelength bands immediately adjacent to a wavelength of a corresponding optical signal and each of the plurality of narrow wavelength bands including a corresponding recovered optical clock wavelength, and each of the corresponding optical signals copropagating in the laser cavity through the nonlinear gain medium with the recovered optical clocks. A parametric optical amplifier or a Raman amplifier having an inhomogenously broadened gain amplifies the plurality of recovered clocks for compensating a portion of the cavity loss at all wavelengths of the plurality of recovered clocks. A wavelength selector passes the light at the plurality of wavelengths of the recovered clocks for recirculation in the laser cavity and preventing the light from the multiple wavelength division multiplexed optical signals and a plurality of idler waves generated by four wave mixing between the multiple wavelength division multiplexed optical signals and recovered optical clocks from recirculating in the laser cavity.

30. 发明授权

US08494013B2 Photodarkening resistant optical fibers and fiber lasers incorporating the same 有权
标题翻译：光抗光纤和掺入其的光纤激光器
公开(公告)号：US08494013B2
公开(公告)日：2013-07-23
申请号：US12908102
申请日：2010-10-20
申请人： Stuart Gray , Shenping Li , Ji Wang
发明人： Stuart Gray , Shenping Li , Ji Wang
IPC分类号： H01S3/30 , C03B37/075 , C03B37/01 , C03C13/00 , G02B6/00 , G02B6/02
CPC分类号： C03B37/014 , C03B37/01446 , C03B2201/08 , C03B2201/22 , C03B2201/31 , C03B2201/34 , C03B2201/36 , C03B2203/23 , C03C4/0071 , C03C13/047 , C03C2201/22 , C03C2201/31 , C03C2201/36 , H01S3/06712 , H01S3/06716 , H01S3/06733 , Y02P40/57
摘要： Photodarkening resistant optical fiber lasing media and fiber lasers incorporating the same are disclosed. In one embodiment, an optical fiber lasing medium includes a core portion formed from silica-based glass comprising a rare-earth dopant and deuterium, the core portion having an index of refraction nc, a numerical aperture NAc. A concentration of defect color centers in the core portion is less than 1×1016/cm3. Deuterium is combined with the defect color centers to form reacted defect color centers that do not absorb ultraviolet and visible wavelengths of light. A first cladding portion is formed from silica-based glass, the first cladding portion surrounding and directly contacting the core portion and having an index of refraction n1, wherein the index of refraction n1 of the first cladding portion is less than the index of refraction nc of the core portion. Methods of forming the photodarkening resistant optical fiber lasing media are also disclosed.
摘要翻译：公开了防光纤光纤激光介质和结合光纤激光器的光纤激光器。在一个实施例中，光纤激光介质包括由包含稀土掺杂剂和氘的二氧化硅基玻璃形成的芯部分，芯部分具有折射率nc，数值孔径NAc。核心部分的缺陷颜色中心的浓度小于1×1016 / cm3。氘与缺陷色中心结合，形成不吸收紫外和可见波长光的反应缺陷色中心。第一包层部分由二氧化硅基玻璃形成，第一包层部分围绕并直接接触芯部并具有折射率n1，其中第一包层部分的折射率n1小于折射率nc 的核心部分。还公开了形成光抗剥离光纤激光介质的方法。

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