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1.发明申请公开(公告)号：US20100232802A1
公开(公告)日：2010-09-16
申请号：US12520914
申请日：2006-12-27
申请人： Pierpaolo Boffi , Giorgio Grasso , Lucia Marazzi , Paola Parolari , Aldo Righetti , Marco Romagnoli , Giovanni Tamiri
发明人： Pierpaolo Boffi , Giorgio Grasso , Lucia Marazzi , Paola Parolari , Aldo Righetti , Marco Romagnoli , Giovanni Tamiri
CPC分类号： H04B10/25133 , G02B6/29343 , G02B6/29394
摘要： Optical transmission system (200) comprising: an optical source (210) adapted to generate a modulated optical signal having an optical spectrum and a dispersion robustness; an optical dispersion compensation filter (250) optically connected to the optical source, comprising at least two cascaded optical resonators and having a periodic transfer function that is rigidly translatable in the frequency spectrum and characterized by a free spectral range (FSR); a control system (270; 280; 260) adapted to act on the optical compensation filter in order rigidly to translate said transfer function along the frequency spectrum in a first and in a second position in such a way that: in a first position in the frequency spectrum of said transfer function, the mean chromatic dispersion weighted over said optical spectrum of the modulated signal is greater, in absolute value, than the value of dispersion robustness; in a second position in the frequency spectrum of said transfer function, the mean chromatic dispersion weighted over said optical spectrum of the modulated signal is smaller, in absolute value, than the value of dispersion robustness; in the first and in the second position the mean slope of the chromatic dispersion weighted over said optical spectrum of the modulated signal is smaller, in absolute terms, than 300000 ps/nm2, where the translation of said transfer function between the first and the second position is smaller than said FSR.
摘要翻译： 光传输系统（200）包括：光源（210），适于产生具有光谱和色散鲁棒性的调制光信号; 光学连接到光源的光学色散补偿滤波器（250），包括至少两个级联的光学谐振器，并且具有在频谱中可刚性地平移的周期性传递函数，并且由自由光谱范围（FSR）表征。 控制系统（270; 280; 260），其适于作用在所述光学补偿滤波器上，以便在第一和第二位置中沿着所述频谱平移所述传递函数，使得在所述光学补偿滤波器中的第一位置处于 所述传递函数的频谱，在调制信号的所述光谱上加权的平均色散比绝对值大于色散鲁棒性的值; 在所述传递函数的频谱中的第二位置，在所述调制信号的所述光谱上加权的平均色散比绝对值小于分散鲁棒性的值; 在第一位置和第二位置，在调制信号的所述光谱上加权的色散的平均斜率绝对值小于300000ps / nm2，其中所述第一和第二信号之间的所述传递函数的平移 位置小于所述FSR。
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公开(公告)号：US08380076B2
公开(公告)日：2013-02-19
申请号：US12520914
申请日：2006-12-27
申请人： Pierpaolo Boffi , Giorgio Grasso , Lucia Marazzi , Paola Parolari , Aldo Righetti , Marco Romagnoli , Giovanni Tamiri
发明人： Pierpaolo Boffi , Giorgio Grasso , Lucia Marazzi , Paola Parolari , Aldo Righetti , Marco Romagnoli , Giovanni Tamiri
CPC分类号： H04B10/25133 , G02B6/29343 , G02B6/29394
摘要： An optical transmission system having an optical source, an optical dispersion compensation filter optically connected to the optical source, and a control system. The optical source generates a modulated optical signal having an optical spectrum and a value of dispersion robustness. The optical dispersion compensation filter has at least two cascaded optical resonators and a periodic transfer function rigidly translatable in the frequency spectrum to obtain translation in frequency of the transfer function without a substantial change in shape, and characterized by a free spectral range. The control system acts on the optical dispersion compensation filter in order to rigidly translate the transfer function along the frequency spectrum in first and second positions in the frequency spectrum. The translation of the transfer function between the first and the second positions is smaller than the free spectral range.
摘要翻译： 一种具有光源，光学连接到光源的光学色散补偿滤光器和控制系统的光传输系统。 光源产生具有光谱和色散鲁棒性值的调制光信号。 光学色散补偿滤波器具有至少两个级联的光学谐振器和在频谱中可以刚性地平移的周期性传递函数，以获得传递函数的频率的平移，而不会形成实质的变化，并且其特征在于自由光谱范围。 控制系统作用于光学色散补偿滤波器，以便在频谱中的第一和第二位置沿着频谱刚性地平移传递函数。 第一和第二位置之间的传递函数的平移小于自由光谱范围。
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公开(公告)号：US08437645B2
公开(公告)日：2013-05-07
申请号：US12739842
申请日：2007-12-06
CPC分类号： H04B10/6161 , H04B10/61 , H04B10/6162 , H04B10/63 , H04B10/64
摘要： An optical communication system (100; 2300) comprises at least a transmitter (110) apt to emit a differential phase shift keying (DPSK) optical signal having a bit-rate equal to R, at least a receiving system (1200) for receiving the differential phase shift keying optical signal; and an optical link (130) optically connecting the transmitter and the receiving system for transmitting the DPSK optical signal from the transmitter to the receiving system, wherein the receiving system comprises a coherent optical receiving device (1205) apt to coherently receive the propagated DPSK optical signal and to emit at least one electrical signal (I) related to the received DPSK optical signal, and wherein the receiving system further comprises at least one electrical filter (270) for filtering the at least one electrical signal and having −3 dB double-side bandwidth greater than or equal to 0.44 R and lower than or equal to 0.68 R, and at least one squarer (280) for squaring the at least one filtered electrical signal. A related method for optical communication is also disclosed.
摘要翻译： 光通信系统（100; 2300）至少包括一个适于发射具有等于R的比特率的差分相移键控（DPSK）光信号的发射机（110），至少一接收系统（1200） 差分相移键控光信号; 以及光链路（130），其将所述发射机和所述接收系统光学连接，用于将所述DPSK光信号从所述发射机发射到所述接收系统，其中，所述接收系统包括相干光接收装置（1205），所述相干光接收装置适于相干地接收所传播的DPSK光 信号并且发射与所接收的DPSK光信号相关的至少一个电信号（I），并且其中所述接收系统还包括用于对所述至少一个电信号进行滤波并具有-3dB双频信号的至少一个电滤波器（270） 侧带宽大于或等于0.44 R且小于或等于0.68 R，以及至少一平方（280）用于平坦化至少一个滤波后的电信号。 还公开了一种用于光通信的相关方法。
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公开(公告)号：US20100266291A1
公开(公告)日：2010-10-21
申请号：US12739842
申请日：2007-12-06
IPC分类号： H04B10/00
CPC分类号： H04B10/6161 , H04B10/61 , H04B10/6162 , H04B10/63 , H04B10/64
摘要： An optical communication system (100; 2300) comprises at least a transmitter (110) apt to emit a differential phase shift keying (DPSK) optical signal having a bit-rate equal to R, at least a receiving system (1200) for receiving the differential phase shift keying optical signal; and an optical link (130) optically connecting the transmitter and the receiving system for transmitting the DPSK optical signal from the transmitter to the receiving system, wherein the receiving system comprises a coherent optical receiving device (1205) apt to coherently receive the propagated DPSK optical signal and to emit at least one electrical signal (I) related to the received DPSK optical signal, and wherein the receiving system further comprises at least one electrical filter (270) for filtering the at least one electrical signal and having −3 dB double-side bandwidth greater than or equal to 0.44 R and lower than or equal to 0.68 R, and at least one squarer (280) for squaring the at least one filtered electrical signal. A related method for optical communication is also disclosed.
摘要翻译： 光通信系统（100; 2300）至少包括一个适于发射具有等于R的比特率的差分相移键控（DPSK）光信号的发射机（110），至少一接收系统（1200） 差分相移键控光信号; 以及光链路（130），其将所述发射机和所述接收系统光学连接，用于将所述DPSK光信号从所述发射机发射到所述接收系统，其中，所述接收系统包括相干光接收装置（1205），所述相干光接收装置适于相干地接收所传播的DPSK光 信号并且发射与所接收的DPSK光信号相关的至少一个电信号（I），并且其中所述接收系统还包括用于对所述至少一个电信号进行滤波并具有-3dB双频信号的至少一个电滤波器（270） 侧带宽大于或等于0.44 R且小于或等于0.68 R，以及至少一平方（280）用于平坦化至少一个滤波后的电信号。 还公开了一种用于光通信的相关方法。
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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：US06483629B1
公开(公告)日：2002-11-19
申请号：US09217841
申请日：1998-12-22
IPC分类号： H01S330
CPC分类号： H01S3/0057 , H01S3/06754 , H01S3/2383 , H01S3/302
摘要： An optical window signal generator which begins generation of an optical output signal in response to an optical activation pulse, and terminates generation of the optical output signal in response to an optical deactivation pulse. The rise time of the optical output signal is equal to the rise time of the optical activation pulse, and its fall time is equal to the rise time of the optical deactivation pulse.
摘要翻译： 一种光学窗口信号发生器，其响应于光学激活脉冲开始产生光学输出信号，并且响应于光学去激活脉冲终止光学输出信号的产生。 光输出信号的上升时间等于光激活脉冲的上升时间，其下降时间等于光失活脉冲的上升时间。
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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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9.发明申请公开(公告)号：US20110170870A1
公开(公告)日：2011-07-14
申请号：US13038990
申请日：2011-03-02
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 state of polarization of polarization multiplexed optical radiation including an identified channel is disclosed. The device and method comprise providing to the polarization multiplexed optical radiation a first controllable polarization transformation to generate a first transformed optical radiation; detecting a first state of polarization of a first polarized portion with respect to a first polarization parameter; controlling the first controllable polarization transformation so that the first polarization parameter has a predetermined value independent of a polarization state of the polarization multiplexed optical radiation; providing to the first transformed optical radiation a second controllable polarization transformation to generate a second transformed optical radiation; detecting a second state of polarization of a second polarized portion; and controlling the second controllable polarization transformation so that the second state of polarization has a predefined value.
摘要翻译： 公开了一种用于稳定包括识别的通道的偏振复用光辐射的偏振状态的装置和方法。 该装置和方法包括向偏振复用光辐射提供第一可控偏振变换以产生第一变换光辐射; 检测相对于第一偏振参数的第一偏振部分的第一极化状态; 控制第一可控偏振变换，使得第一偏振参数具有与偏振复用光辐射的偏振状态无关的预定值; 向所述第一变换光辐射提供第二可控偏振变换以产生第二变换光辐射; 检测第二偏振部分的第二偏振状态; 以及控制所述第二可控偏振变换，使得所述第二极化状态具有预定义的值。
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10.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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