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11.发明授权Method and device for stabilizing the state of polarization of optical radiation 有权用于稳定光辐射极化状态的方法和装置公开(公告)号：US07528360B2
公开(公告)日：2009-05-05
申请号：US11661416
申请日：2005-09-06
CPC分类号： G02B6/2793 , G02B6/2713 , G02B6/2766 , G02B27/286 , G02B27/288 , G02F1/0136 , H04J14/06
摘要： A polarization stabilizing device and method based on controlling the phase retardations of a pair of variable rotators with an optically interposed quarter-wave plate, with a controller such that the first of the variable rotators has its phase retardation switched between first and second values whenever the phase retardation of the second of the variable rotators reaches an upper or a lower limit. The upper and lower limits of the second rotator and the first and second values of the first rotator are chosen so that discontinuities in the power of the output optical radiation are avoided when the first variable rotator is switched, thereby providing endless polarization stabilization using rotators that themselves may have limited retardation ranges.
摘要翻译： 一种偏振稳定装置和方法，其基于用光学插入的四分之一波片控制一对可变旋转器的相位延迟，其中控制器使得第一可变旋转器的相位延迟在第一和第二值之间切换， 第二可变转子的相位延迟达到上限或下限。 选择第二旋转器的上限和下限以及第一旋转器的第一和第二值，使得当第一可变旋转器被切换时避免输出光辐射的功率的不连续性，从而使用旋转器提供无限极化稳定 它们本身可能具有有限的延迟范围。
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12.发明申请公开(公告)号：US20070280689A1
公开(公告)日：2007-12-06
申请号：US11665466
申请日：2004-10-22
申请人： Pierpaolo Boffi , Lucia Marazzi , Paolo Martelli , Mario Martinelli , Aldo Righetti , Rocco Siano
发明人： Pierpaolo Boffi , Lucia Marazzi , Paolo Martelli , Mario Martinelli , Aldo Righetti , Rocco Siano
IPC分类号： H04J14/06
CPC分类号： H04J14/06 , G02F1/0136 , H04J14/02
摘要： A device and method for stabilizing the polarization of polarization multiplexed optical radiation includes an identified channel which is provided with a pilot signal. The device and method are based on providing to the polarization multiplexed optical radiation a controllable polarization transformation; measuring the optical power of a polarized portion of the identified channel downstream the polarization transformation; controlling, responsively to the optical power, the controllable polarization transformation so that the identified channel downstream the polarization transformation has a predefined polarization azimuth; providing to the optical radiation downstream the polarization transformation a further controllable polarization transformation; measuring the optical power of a polarized portion of the identified channel downstream the further controllable polarization transformation; and controlling, responsively to the optical power, the further controllable polarization transformation so that the identified channel downstream the further controllable polarization transformation has a predefined state of polarization.
摘要翻译： 用于稳定偏振复用光辐射的偏振的装置和方法包括被提供有导频信号的识别信道。 该装置和方法基于向偏振复用光辐射提供可控偏振变换; 测量在所述偏振变换下游的所识别的通道的极化部分的光功率; 响应于光功率控制可控偏振变换，使得偏振变换下游的识别信道具有预定义的偏振方位; 向偏光变换下游的光辐射提供进一步可控的偏振变换; 测量所识别的通道的偏振部分的光功率在下游的可控偏振变换; 并且响应于光功率控制进一步可控的偏振变换，使得在进一步可控偏振变换下游的识别信道具有预定的偏振状态。
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公开(公告)号：US08019232B2
公开(公告)日：2011-09-13
申请号：US10592032
申请日：2004-03-10
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/5561
摘要： A method of phase modulating optical radiation by the steps of phase modulating the optical radiation by using a modulator having an extinction ratio in order to provide a multilevel phase shift key signal, and applying to each optical pulse a phase-shift having an absolute value depending on the extinction ratio and a sign depending, for each of the optical pulses, on the respective optical phase value. An apparatus implementing the method is also disclosed.
摘要翻译： 通过使用具有消光比的调制器对光辐射进行相位调制以便提供多电平相移键信号的步骤来相位调制光辐射的方法，并且向每个光脉冲施加具有绝对值的绝对值的相移 对于每个光脉冲，消光比和相应的光学相位值的符号。 还公开了一种实现该方法的装置。
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公开(公告)号：US06872794B2
公开(公告)日：2005-03-29
申请号：US10268717
申请日：2002-10-11
申请人： Andrea Zappettini , Silvia Maria Pietralunga , Yuri Dubitsky , Antonio Zaopo , Mario Martinelli
发明人： Andrea Zappettini , Silvia Maria Pietralunga , Yuri Dubitsky , Antonio Zaopo , Mario Martinelli
CPC分类号： C08L65/02 , C08G61/02 , C08G2261/312 , G02F1/3616
摘要： The invention relates to new polymers useful in non linear optical (NLO) applications, particularly as optical waveguide materials.
摘要翻译： 本发明涉及可用于非线性光学（NLO）应用的新聚合物，特别是作为光波导材料。
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15.发明授权Optical device and a method of processing a digital optical signal in parallel and in free space 失效光学装置以及在自由空间中并行处理数字光信号的方法公开(公告)号：US06292280B1
公开(公告)日：2001-09-18
申请号：US09096387
申请日：1998-06-12
IPC分类号： G06E100
CPC分类号： H04B10/11 , H04B10/1141 , H04Q11/0003 , H04Q2011/0015 , H04Q2011/002 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0035 , H04Q2011/0039 , H04Q2011/0041
摘要： An optical device is provided for processing a digital optical signal in parallel and in free space. A device consistent with the invention provides for inputting a digital optical signal in guided propagation, converting the digital optical signal to n digital optical signals in guided propagation, and converting the n digital optical signals to n digital optical signals in free space. In addition, the invention provides for selecting a bit preselected from the at least one temporal series of n bits of each of the n digital optical signals, modifying optically, at least one bit of the spatial figure of the n bits, and outputting the at least one bit of the spatial figure of n bits.
摘要翻译： 提供一种用于并行和自由空间处理数字光信号的光学装置。 符合本发明的装置提供了在导向传播中输入数字光信号，将数字光信号转换成n导数传播中的数字光信号，并将n个数字光信号转换成自由空间中的n个数字光信号。 另外，本发明提供从n个数字光信号中的每一个n帧的至少一个时间序列预先选择的位，光学修改n位空间图的至少一位，并输出在 n位的空间图的至少一位。
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公开(公告)号：US08781337B2
公开(公告)日：2014-07-15
申请号：US13226149
申请日：2011-09-06
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/5561
摘要： A method of phase modulating optical radiation by the steps of phase modulating the optical radiation by using a modulator having an extinction ratio in order to provide a multilevel phase shift key signal, and applying to each optical pulse a phase-shift having an absolute value depending on the extinction ratio and a sign depending, for each of the optical pulses, on the respective optical phase value. An apparatus implementing the method is also disclosed.
摘要翻译： 通过使用具有消光比的调制器对光辐射进行相位调制以便提供多电平相移键信号的步骤来相位调制光辐射的方法，并且向每个光脉冲施加具有绝对值的绝对值的相移 对于每个光脉冲，消光比和相应的光学相位值的符号。 还公开了一种实现该方法的装置。
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公开(公告)号：US20070274731A1
公开(公告)日：2007-11-29
申请号：US10592032
申请日：2004-03-10
IPC分类号： H04B10/155
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/5561
摘要： A method of phase modulating optical radiation by the steps of phase modulating the optical radiation by using a modulator having an extinction ratio in order to provide a multilevel phase shift key signal, and applying to each optical pulse a phase-shift having an absolute value depending on the extinction ratio and a sign depending, for each of the optical pulses, on the respective optical phase value. An apparatus implementing the method is also disclosed.
摘要翻译： 通过使用具有消光比的调制器对光辐射进行相位调制以便提供多电平相移键信号的步骤来相位调制光辐射的方法，并且向每个光脉冲施加具有绝对值的绝对值的相移 对于每个光脉冲，消光比和相应的光学相位值的符号。 还公开了一种实现该方法的装置。
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公开(公告)号：US20060140636A1
公开(公告)日：2006-06-29
申请号：US10536807
申请日：2002-11-29
IPC分类号： H04B10/12
CPC分类号： H04B10/25137 , H04B10/25253
摘要： An optical communication system has a transmitter generating a phase-modulated optical signal (Sa, Sb, . . . , Sk); a receiver for receiving the phase-modulated optical signal; an optical communication link between the transmitter section and the receiver section. The optical communication link is a dispersion-managed optical communication link having dispersion-compensating elements propagating the phase-modulated optical signal at substantially constant optical power. The receiver has a dispersive element having a prescribed dispersion, the dispersive element receiving and converting the phase-modulated optical signal into a corresponding intensity-modulated optical signal, and an optical intensity detector fed with the intensity-modulated optical signal.
摘要翻译： 光通信系统具有产生相位调制光信号（Sa，Sb ...，Sk）的发射机; 用于接收相位调制光信号的接收机; 在发射机部分和接收机部分之间的光通信链路。 光通信链路是色散管理的光通信链路，其色散补偿元件以基本恒定的光功率传播相位调制的光信号。 接收器具有具有规定色散的色散元件，色散元件接收并将相位调制光信号转换为对应的强度调制光信号，以及馈送有强度调制光信号的光强度检测器。
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公开(公告)号：US06584261B2
公开(公告)日：2003-06-24
申请号：US09988624
申请日：2001-11-20
IPC分类号： G02B600
CPC分类号： G02F3/00 , H01S3/102 , H01S3/1022
摘要： An apparatus for gating an optical signal comprising: an input stage arranged to receive and combine first and second optical control signals (ON, OFF) of first and second wavelengths, and an optical signal (SIGNAL IN) to be gated of a third wavelength. A gain medium is arranged to receive the signals SIGNAL IN, ON and OFF from the input stage. The gain medium (e.g. YAG) comprises a transition metal dopant (e.g. Cr4+) that has an excited state populatable by the first control signal and depopulatable by the second control signal to allow selective amplification of the optical signal to be gated by stimulated emission from the excited state responsive to the control signals. The amplification process has a very fast switch-on time that is several orders of magnitude faster than in prior art devices based on the rare earth dopant Er3+.
摘要翻译： 一种用于选通光信号的装置，包括：输入级，被布置为接收和组合第一和第二波长的第一和第二光控制信号（ON，OFF）以及要被选通第三波长的光信号（SIGNAL IN）。 增益介质被布置成从输入级接收信号IN，ON和OFF。 增益介质（例如YAG）包括过渡金属掺杂剂（例如Cr4 +），其具有可被第一控制信号吸引的激发态，并且可被第二控制信号抑制，以允许通过受激发射 激发状态响应于控制信号。 放大过程具有非常快的接通时间，其比基于稀土掺杂剂Er3 +的现有技术器件快几个数量级。
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公开(公告)号：US5268739A
公开(公告)日：1993-12-07
申请号：US803485
申请日：1991-12-04
摘要： In a laser apparatus for measuring the velocity of a fluid, a measurement laser light beam (M) fed into the fluid and scattered by a particle within the fluid is made to interfere with a reference laser light beam (R) to generate an interference signal based on the velocity of the particle; the apparatus comprises a low-coherence laser source (10) and interferometric means (11, 12) which split the light beam of the laser source (10) into the stated reference light beam (R) and measurement light beam (M), and cause the reference light beam (R) derived from the laser source (10) to interfere with the backscattered component resulting from the scattering of the measurement light beam (M).
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