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1. 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.

2. 发明申请

US20050063425A1 Phase-insensitive recovery of clock pulses of wavelength division multiplexed optical signals 失效
标题翻译：波分复用光信号的时钟脉冲的相位不敏感恢复
公开(公告)号：US20050063425A1
公开(公告)日：2005-03-24
申请号：US10667932
申请日：2003-09-22
申请人： Krassimir Krastev , Dmitri Kuksenkov , Shenping Li
发明人： Krassimir Krastev , Dmitri Kuksenkov , Shenping Li
IPC分类号： H04J14/02 , H04L7/00 , H01S3/30 , H01S3/083
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.
摘要翻译：用于多个波分复用光信号的光时钟恢复的光泵浦锁模光纤环形激光器将多个激光器的输出主动模式锁定为多个多个波分复用光信号的多个恢复时钟。激光腔具有对应于复用光信号中的至少一个的位周期的整数倍的空腔长度，用于接收多个波分复用光信号的预放大版本，以通过相位不敏感参数提供增益调制将来自激光腔的输出的一部分的一部分放大并再循环通过激光腔，以将激光腔的输出空间模式锁定为恢复的时钟。

3. 发明申请

US20060131183A1 Grinding machine 审中-公开
标题翻译：磨床
公开(公告)号：US20060131183A1
公开(公告)日：2006-06-22
申请号：US10544201
申请日：2004-01-20
申请人： Raymond Jacobus Knaapen , Marinus Josephus Dona , Krassimir Krastev , Jakob Vijfvinkel , Piet Van Rens
发明人： Raymond Jacobus Knaapen , Marinus Josephus Dona , Krassimir Krastev , Jakob Vijfvinkel , Piet Van Rens
IPC分类号： B23H3/00
CPC分类号： B24B49/16 , B24B53/001 , G05B2219/45159
摘要： A grinding machine (1) for grinding a workpiece (40) comprises the following components: a cup wheel (10) having an annular grinding surface (11); a disc-shaped electrode (60), which is positioned in the vicinity of at least a portion of the grinding surface (11) such that a dressing area (75) is obtained in which a relatively small gap is present between the electrode (60) and the grinding surface (11), feed means (70) for feeding electrolyte to the dressing area (75); and a generator (20) for generating an electric current between the grinding surface (11) and the electrode (60), via the electrolyte. The electrode (60) is movable with respect to the dressing area (75), so that contamination of the electrode (60), which normally occurs as a result of the dressing process, is continuously removed. Consequently, the quality of the dressing process is maintained at a high level.
摘要翻译：一种用于研磨工件（40）的磨床（1）包括以下部件：具有环形研磨表面（11）的杯轮（10）; 位于磨削表面（11）的至少一部分附近的圆盘形电极（60），从而获得在电极（60）之间存在相对较小间隙的修整区域（75））和研磨表面（11），用于将电解质供给到更衣区（75）的进料装置（70）; 以及用于经由所述电解质在所述研磨面（11）与所述电极（60）之间产生电流的发电机（20）。电极（60）能够相对于修整区域（75）移动，从而连续地去除由于修整过程而通常发生的电极（60）的污染。因此，修整过程的质量保持在高水平。

4. 发明申请

US20070145643A1 Alignment for imprint lithography 失效
标题翻译：刻印光刻对准
公开(公告)号：US20070145643A1
公开(公告)日：2007-06-28
申请号：US11316361
申请日：2005-12-23
申请人： Johan Dijksman , Raymond Knaapen , Krassimir Krastev , Sander Wuister , Yvonne Kruijt-Stegeman , Ivar Schram
发明人： Johan Dijksman , Raymond Knaapen , Krassimir Krastev , Sander Wuister , Yvonne Kruijt-Stegeman , Ivar Schram
IPC分类号： B29C35/08
CPC分类号： G03F9/7053 , B82Y10/00 , B82Y40/00 , G03F7/0002 , G03F9/7042 , Y10S977/877 , Y10S977/888
摘要： A method of aligning an imprint template with respect to a target region of a substrate is disclosed, the method including depositing a volume of an imprintable medium within the target region; contacting an imprint template to the imprintable medium so that the imprintable medium is compressed and allowing the imprint template, the target region, or both, to move laterally with respect to each other under interfacial tension forces between the target region and the imprint template, wherein a material which is less wetting than the substrate is provided in a configuration which at least partially surrounds the target region of the substrate.
摘要翻译：公开了一种将压印模板相对于衬底的目标区域对准的方法，该方法包括在目标区域内沉积一定量的可压印介质; 将压印模板接触到可压印介质，使得可压印介质被压缩并且允许压印模板，目标区域或两者在目标区域和压印模板之间的界面张力下相对于彼此横向移动，其中提供了比衬底少润湿的材料，其形式至少部分地围绕衬底的目标区域。

5. 发明申请

US20070141191A1 Imprint lithography 有权
标题翻译：印刷光刻
公开(公告)号：US20070141191A1
公开(公告)日：2007-06-21
申请号：US11312659
申请日：2005-12-21
申请人： Yvonne Kruijt-Stegeman , Raymond Knaapen , Johan Dijksman , Krassimir Krastev , Sander Wuister , Aleksey Kolesnychenko , Karel Van Der Mast , Klaus Simon
发明人： Yvonne Kruijt-Stegeman , Raymond Knaapen , Johan Dijksman , Krassimir Krastev , Sander Wuister , Aleksey Kolesnychenko , Karel Van Der Mast , Klaus Simon
IPC分类号： B29C35/08
CPC分类号： B29C59/02 , B29C35/0888 , B29C59/022 , B29C2035/0827 , B29C2059/023 , B82Y10/00 , B82Y40/00 , G03F7/0002
摘要： An imprint lithography apparatus is disclosed that has a first array of template holders, a second array of template holders, and a substrate table arranged to support a substrate to be imprinted, wherein the first array of template holders is arranged to hold an array of imprint templates that can be used to imprint a first array of patterns onto the substrate, and the second array of template holders is arranged hold an array of imprint templates that can be used to imprint a second array of patterns onto the substrate, the patterns imprinted by the second array being interspersed between the patterns imprinted by the first array.
摘要翻译：公开了一种压印光刻设备，其具有模板保持器的第一阵列，模板保持器的第二阵列和布置成支撑待印刷的基板的衬底台，其中模板保持器的第一阵列布置成保持压印阵列可用于将第一阵列图案印刷到基底上的模板，并且第二阵列的模板支架被布置成保持压印模板阵列，其可用于将第二阵列阵列印刷到基底上，所述图案由第二阵列散布在由第一阵列印刷的图案之间。

6. 发明授权

US06647193B2 Waveguide optical fiber for parametric amplification within S-band optical range 失效
标题翻译：波导光纤用于S波段光学范围内的参数放大
公开(公告)号：US06647193B2
公开(公告)日：2003-11-11
申请号：US10005134
申请日：2001-11-26
申请人： Krassimir Krastev , Dominique Labilloy
发明人： Krassimir Krastev , Dominique Labilloy
IPC分类号： G02B622
CPC分类号： G02B6/02271 , G02B6/02276 , G02B6/0281 , G02B6/03627 , G02F2001/392
摘要： An optical waveguide fiber including a core region, an inner clad layer surrounding and in contact with the core region and an outer clad layer surrounding and in contact with the inner clad layer. The refractive index percent of the radii of the core region, the inner clad layer and the outer clad layer are chosen from the following ranges: the index of the core region within the range of from about 1.332 to about 1.628; the index of the inner clad layer within the range of about 1.30 to about 1.591; the index of the outer clad layer within the range of from about 1.305 to about 1.595; the outer radius of the core region within the range of from about 1.71 &mgr;m to about 2.09 &mgr;m; and, the outer radius of the inner clad layer within the range of from about 4.41 &mgr;m to about 5.39 &mgr;m.
摘要翻译：一种光纤，其包括芯区域，围绕并与芯区域接触的内包层，以及包围并与内包层接触的外包层。芯区域，内包层和外包层的半径的折射率百分比选自以下范围：核心区域的指数在约1.332至约1.628的范围内; 内包层的折射率在约1.30至约1.591的范围内; 外覆层的指数在约1.305至约1.595的范围内; 芯区域的外半径在约1.71μm至约2.09μm的范围内; 并且内包层的外半径在约4.41μm至约5.39μm的范围内。

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