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公开(公告)号：US08300306B2
公开(公告)日：2012-10-30
申请号：US12897456
申请日：2010-10-04
IPC分类号： H04B10/17
CPC分类号： H01S3/06758 , H01S3/0064 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/1695 , H01S3/302 , H01S2301/02 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier includes at least a first and a second optical Raman-active fiber disposed in series with each other. A first pump source is connected to the first Raman-active fiber, and is adapted for emitting and coupling into the first Raman-active fiber a first pump radiation including a first group of frequencies. A second pump source is connected to the second Raman-active fiber, and is adapted for emitting and coupling into the second Raman-active fiber a second pump radiation including a second group of frequencies. The whole of said first and second group of frequencies extends over a pump frequency range having a width of at least the 40% of the Raman shift. The minimum and the maximum frequency in each of said first and second group of frequencies differ with each other of at most the 70% of said Raman shift.
摘要翻译： 拉曼放大器包括彼此串联布置的至少第一和第二光学拉曼 - 有源光纤。 第一泵浦源连接到第一拉曼有源光纤，并且适于发射和耦合到第一拉曼有源光纤中，该第一泵浦辐射包括第一组频率。 第二泵浦源连接到第二拉曼有源光纤，并且适于发射和耦合到第二拉曼有源光纤中的包括第二组频率的第二泵浦辐射。 所述第一组和第二组频率的整体在具有至少为拉曼位移的40％的宽度的泵频率范围内延伸。 所述第一组和第二组频率中的每一个中的最小和最大频率彼此相差至多为所述拉曼位移的70％。
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公开(公告)号：US20060109543A1
公开(公告)日：2006-05-25
申请号：US10522555
申请日：2002-07-31
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H01S3/0064 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/1695 , H01S3/302 , H01S2301/02 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier having at least a first and a second optical Raman-active fiber disposed in series with each other is disclosed. A first pump source is connected to the first Raman-active fiber, and is adapted for emitting and coupling into the first Raman-active fiber a first pump radiation including a first group of frequencies. A second pump source is connected to the second Raman-active fiber, and is adapted for emitting and coupling into the second Raman-active fiber a second pump radiation including a second group of frequencies. The whole of the first and second group of frequencies extends over a pump frequency range having a width of at least 40% of the Raman shift. The minimum and the maximum frequency in each of the first and second group of frequencies differ from each other by at most 70% of the Raman shift.
摘要翻译： 公开了具有彼此串联布置的至少第一和第二光学拉曼有源光纤的拉曼放大器。 第一泵浦源连接到第一拉曼有源光纤，并且适于发射和耦合到第一拉曼有源光纤中，该第一泵浦辐射包括第一组频率。 第二泵浦源连接到第二拉曼有源光纤，并且适于发射和耦合到第二拉曼有源光纤中的包括第二组频率的第二泵浦辐射。 整个第一组和第二组频率在具有拉曼位移的至少40％的宽度的泵频率范围内延伸。 第一组和第二组频率中的每一个中的最小和最大频率彼此相差至多为拉曼位移的70％。
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公开(公告)号：US20110080634A1
公开(公告)日：2011-04-07
申请号：US12897456
申请日：2010-10-04
IPC分类号： H01S3/30
CPC分类号： H01S3/06758 , H01S3/0064 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/1695 , H01S3/302 , H01S2301/02 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier includes at least a first and a second optical Raman-active fiber disposed in series with each other. A first pump source is connected to the first Raman-active fiber, and is adapted for emitting and coupling into the first Raman-active fiber a first pump radiation including a first group of frequencies. A second pump source is connected to the second Raman-active fiber, and is adapted for emitting and coupling into the second Raman-active fiber a second pump radiation including a second group of frequencies. The whole of said first and second group of frequencies extends over a pump frequency range having a width of at least the 40% of the Raman shift. The minimum and the maximum frequency in each of said first and second group of frequencies differ with each other of at most the 70% of said Raman shift.
摘要翻译： 拉曼放大器包括彼此串联布置的至少第一和第二光学拉曼 - 有源光纤。 第一泵浦源连接到第一拉曼有源光纤，并且适于发射和耦合到第一拉曼有源光纤中，该第一泵浦辐射包括第一组频率。 第二泵浦源连接到第二拉曼有源光纤，并且适于发射和耦合到第二拉曼有源光纤中的包括第二组频率的第二泵浦辐射。 所述第一组和第二组频率的整体在具有至少为拉曼位移的40％的宽度的泵频率范围内延伸。 所述第一组和第二组频率中的每一个中的最小和最大频率彼此相差至多为所述拉曼位移的70％。
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公开(公告)号：US07813034B2
公开(公告)日：2010-10-12
申请号：US11802011
申请日：2007-05-18
CPC分类号： H01S3/06758 , H01S3/0064 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/1695 , H01S3/302 , H01S2301/02 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier comprises at least a first and a second optical Raman-active fiber disposed in series with each other. A first pump source is connected to the first Raman-active fiber, and is adapted for emitting and coupling into the first Raman-active fiber a first pump radiation including a first group of frequencies. A second pump source is connected to the second Raman-active fiber, and is adapted for emitting and coupling into the second Raman-active fiber a second pump radiation including a second group of frequencies. The whole of said first and second group of frequencies extends over a pump frequency range having a width of at least the 40% of the Raman shift. The minimum and the maximum frequency in each of said first and second group of frequencies differ with each other of at most the 70% of said Raman shift.
摘要翻译： 拉曼放大器包括彼此串联布置的至少第一和第二光学拉曼 - 有源光纤。 第一泵浦源连接到第一拉曼有源光纤，并且适于发射和耦合到第一拉曼有源光纤中，该第一泵浦辐射包括第一组频率。 第二泵浦源连接到第二拉曼有源光纤，并且适于发射和耦合到第二拉曼有源光纤中的包括第二组频率的第二泵浦辐射。 所述第一组和第二组频率的整体在具有至少为拉曼位移的40％的宽度的泵频率范围内延伸。 所述第一组和第二组频率中的每一个中的最小和最大频率彼此相差至多为所述拉曼位移的70％。
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公开(公告)号：US20070223085A1
公开(公告)日：2007-09-27
申请号：US11802011
申请日：2007-05-18
IPC分类号： H01S3/00
CPC分类号： H01S3/06758 , H01S3/0064 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/1695 , H01S3/302 , H01S2301/02 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier comprises at least a first and a second optical Raman-active fiber disposed in series with each other. A first pump source is connected to the first Raman-active fiber, and is adapted for emitting and coupling into the first Raman-active fiber a first pump radiation including a first group of frequencies. A second pump source is connected to the second Raman-active fiber, and is adapted for emitting and coupling into the second Raman-active fiber a second pump radiation including a second group of frequencies. The whole of said first and second group of frequencies extends over a pump frequency range having a width of at least the 40% of the Raman shift. The minimum and the maximum frequency in each of said first and second group of frequencies differ with each other of at most the 70% of said Raman shift.
摘要翻译： 拉曼放大器包括彼此串联布置的至少第一和第二光学拉曼 - 有源光纤。 第一泵浦源连接到第一拉曼有源光纤，并且适于发射和耦合到第一拉曼有源光纤中，该第一泵浦辐射包括第一组频率。 第二泵浦源连接到第二拉曼有源光纤，并且适于发射和耦合到第二拉曼有源光纤中的包括第二组频率的第二泵浦辐射。 所述第一组和第二组频率的整体在具有至少为拉曼位移的40％的宽度的泵频率范围内延伸。 所述第一组和第二组频率中的每一个中的最小和最大频率彼此相差至多为所述拉曼位移的70％。
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公开(公告)号：US07253944B2
公开(公告)日：2007-08-07
申请号：US10522555
申请日：2002-07-31
CPC分类号： H01S3/06758 , H01S3/0064 , H01S3/06754 , H01S3/06766 , H01S3/0677 , H01S3/094096 , H01S3/0941 , H01S3/1695 , H01S3/302 , H01S2301/02 , H04B10/2916 , H04B2210/003
摘要： A Raman amplifier having at least a first and a second optical Raman-active fiber disposed in series with each other is disclosed. A first pump source is connected to the first Raman-active fiber, and is adapted for emitting and coupling into the first Raman-active fiber a first pump radiation including a first group of frequencies. A second pump source is connected to the second Raman-active fiber, and is adapted for emitting and coupling into the second Raman-active fiber a second pump radiation including a second group of frequencies. The whole of the first and second group of frequencies extends over a pump frequency range having a width of at least 40% of the Raman shift. The minimum and the maximum frequency in each of the first and second group of frequencies differ from each other by at most 70% of the Raman shift.
摘要翻译： 公开了具有彼此串联布置的至少第一和第二光学拉曼有源光纤的拉曼放大器。 第一泵浦源连接到第一拉曼有源光纤，并且适于发射和耦合到第一拉曼有源光纤中，该第一泵浦辐射包括第一组频率。 第二泵浦源连接到第二拉曼有源光纤，并且适于发射和耦合到第二拉曼有源光纤中的包括第二组频率的第二泵浦辐射。 整个第一组和第二组频率在具有拉曼位移的至少40％的宽度的泵频率范围内延伸。 第一组和第二组频率中的每一个中的最小和最大频率彼此相差至多为拉曼位移的70％。
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公开(公告)号：US5796764A
公开(公告)日：1998-08-18
申请号：US760735
申请日：1996-12-05
申请人： Raffaele Corsini , Dietmar Hiller
发明人： Raffaele Corsini , Dietmar Hiller
CPC分类号： H01S3/063 , H01S3/022 , H01S3/042 , H01S3/0637 , H01S3/0675 , H01S3/1083 , H01S3/1109
摘要： A rare-earth doped, lithium niobate, diffusion Bragg reflector laser having a simplified structure and improved efficiency is disclosed. The laser has a pump source, a wavelength division multiplexer, a substrate of lithium niobate doped with at least one rare earth element and having a feedback element, and a grating reflector. The grating reflector is formed from portions of an optical fibre and abuts one end of the doped substrate, such that the grating reflector and the feedback element of the doped substrate form a cavity for the laser. The doped substrate may include phase or amplitude modulators for FM or AM mode-locking operation.
摘要翻译： 公开了一种具有简化结构和提高效率的稀土掺杂铌酸锂扩散布拉格反射激光器。 激光器具有泵浦源，波分多路复用器，掺杂有至少一个稀土元素并具有反馈元件的铌酸锂衬底和光栅反射器。 光栅反射器由光纤的部分形成并且邻接掺杂衬底的一端，使得光栅反射器和掺杂衬底的反馈元件形成激光器的空腔。 掺杂衬底可以包括用于FM或AM模式锁定操作的相位或幅度调制器。
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公开(公告)号：US08824886B2
公开(公告)日：2014-09-02
申请号：US13253016
申请日：2011-10-04
CPC分类号： H04B10/2569
摘要： A method of monitoring a differential group delay (DGD) of an optical communications signal having a polarisation multiplexed modulation format is described. The method includes the operations of receiving a signal and performing analogue to digital conversion of the signal to generate a digitised signal corresponding to one polarisation of the signal and to generate another digitised signal corresponding to another polarisation of the signal, and applying a polarisation mode dispersion(PMD) compensation to each of the digitised signals. The method further includes the operations of obtaining an indication of the channel transfer function of the optical communications signal, determining a DGD in dependence on the indication of the channel transfer function, determining a delay between the PMD compensated digitised signals, subtracting the delay from the DGD to obtain a corrected DGD, and generating and transmitting a monitoring signal with an indication of the corrected DGD.
摘要翻译： 描述了监视具有偏振复用调制格式的光通信信号的差分组延迟（DGD）的方法。 该方法包括接收信号并执行信号的模数转换以产生对应于信号的一个极化的数字化信号并产生对应于该信号的另一极化的另一个数字化信号的操作，以及施加偏振模色散 （PMD）补偿到每个数字化信号。 该方法还包括获得光通信信号的信道传递函数的指示的操作，根据信道传递函数的指示确定DGD，确定PMD补偿的数字化信号之间的延迟，减去从 DGD以获得校正的DGD，以及生成并发送具有校正的DGD的指示的监视信号。
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公开(公告)号：US06867902B2
公开(公告)日：2005-03-15
申请号：US10135772
申请日：2002-05-01
CPC分类号： B82Y20/00 , G02B6/1225 , G02F1/3534 , G02F1/3544 , G02F1/395 , G02F2202/32
摘要： Device for performing a parametric process, comprising a substantially periodic photonic crystal structure comprising a plurality of unitary cells each comprising a first layer having a first refractive index n1 and a first length L1, a second layer having a second refractive index n2, with n1 different from n2, and a second length L2, a third layer having a third refractive index n3, with n3 different from n2, and a third length L3 and a fourth layer having a fourth refractive index n4, with n4 different from n1 and from n3, and a fourth length L4, wherein at least one among the first, the second, the third and the fourth layers has a non-linearity of the χ2 or χ3 type; at least one of the following conditions is met: a) n1 is different from n3; b) n2 is different from n4; c) L1 is different from L3; d) L2 is different from L4; and n1, n2, n3, n4, L1, L2, L3, L4 have such values as to perform the parametric process in phase matching conditions.
摘要翻译： 用于执行参数过程的装置，包括基本上周期性的光子晶体结构，其包括多个单元，每个单元包括具有第一折射率n1和第一长度L1的第一层，具有第二折射率n2的第二层，其中n1不同于 n2，第二长度L2，第三折射率n3，n3不同于n2的第三层，第三长度L3和第四折射率n4的第四层，n4与n3不同，n3不同 第四长度L4，其中第一，第二，第三和第四层中的至少一个具有chi2或chi3类型的非线性;满足以下条件中的至少一个：a）n1不同于n3; b）n2不同于n4; c）L1不同于L3; d）L2不同于L4; 和n1，n2，n3，n4，L1，L2，L3，L4具有在相位匹配条件下执行参数处理的值。
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公开(公告)号：US09425900B2
公开(公告)日：2016-08-23
申请号：US14382536
申请日：2012-03-02
IPC分类号： H04B10/61 , H04B10/079 , H04B10/2513 , H04B10/69 , H04L27/01
CPC分类号： H04B10/6161 , H04B10/07951 , H04B10/25133 , H04B10/6971 , H04L27/01
摘要： Chromatic dispersion (CD) processing apparatus comprises an equalizer loop comprising: a frequency domain equalizer (FDE) arranged to receive samples of an electrical representation of an optical communications signal having CD and to apply CD compensation to the samples, to form dispersion corrected samples having a residual CD value; a time domain equalizer arranged to receive the corrected samples and to generate a representation of a channel linear transfer function of the signal from the corrected samples, to generate and transmit a monitoring signal comprising said representation; optical performance monitoring apparatus arranged to receive the monitoring signal and to estimate the residual CD value; and a processor arranged to receive the estimated residual value and to compare it to a threshold value and to generate and transmit to the FDE an estimation signal comprising the estimated value unless it is less than the threshold.
摘要翻译： 色散（CD）处理装置包括均衡器环路，包括：频域均衡器（FDE），被布置为接收具有CD的光通信信号的电表示的样本，并对样本应用CD补偿，以形成色散校正样本， 剩余CD值; 时域均衡器，被布置成接收经校正的样本并且产生来自校正样本的信号的信道线性传递函数的表示，以产生并发送包括所述表示的监视信号; 光学性能监视装置，被配置为接收监视信号并估计残余CD值; 以及处理器，被布置为接收估计的残余值并将其与阈值进行比较，并且生成并向FDE发送包括估计值的估计信号，除非其小于阈值。
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