公开(公告)号：US08369711B2

公开(公告)日：2013-02-05

申请号：US12677165

申请日：2008-03-17

申请人： Mirco Scaffardi ,  Gianluca Berrettini ,  Rodolfo Di Muro ,  Bimal Nayar ,  Antonella Bogoni ,  Luca Poti

发明人： Mirco Scaffardi ,  Gianluca Berrettini ,  Rodolfo Di Muro ,  Bimal Nayar ,  Antonella Bogoni ,  Luca Poti

IPC分类号： H04B10/12

CPC分类号： H04J14/06 ,  H04J14/08

摘要： An optical transmitter apparatus comprises at least three input transmitters that each provide at an output an NRZ optical signal, at least two of the NRZ optical signals having substantially the same bit rate, each of the signals having a bit rate which is less than 100 Gbit/s and the sum of the bit rates of all of the at least three transmitters being equal to or greater than 100 Gbit/s, an NRZ to RZ converter associated with each transmitter which converts each NRZ signal into an optical RZ signal, an optical time division multiplexer which converts the RZ signals into at least two further signals, and a polarization multiplexer which processes the two further signals to provide two output signals of differing polarization.

摘要翻译： 光发射机装置包括至少三个输入发射机，每个至少三个输入发射机在输出端提供NRZ光信号，NRZ光信号中的至少两个具有基本上相同的比特率，每个信号的比特率小于100Gbit / s，并且所有至少三个发射机的比特率的总和等于或大于100Gbit / s，与每个发射机相关联的NRZ至RZ转换器，其将每个NRZ信号转换为光学RZ信号，光学 时分复用器，其将RZ信号转换为至少两个另外的信号;以及偏振复用器，其处理两个另外的信号以提供两个不同极化的输出信号。

公开(公告)号：US20100316377A1

公开(公告)日：2010-12-16

申请号：US12677165

申请日：2008-03-17

申请人： Mirco Scaffardi ,  Gianluca Berrettini ,  Rodolfo Di Muro ,  Bimal Nayar ,  Antonella Bogoni ,  Luca Poti

发明人： Mirco Scaffardi ,  Gianluca Berrettini ,  Rodolfo Di Muro ,  Bimal Nayar ,  Antonella Bogoni ,  Luca Poti

IPC分类号： H04J14/08

CPC分类号： H04J14/06 ,  H04J14/08

摘要： An optical transmitter apparatus capable of a transmission rate of at least 100 gbit/second comprises at least three input transmitters that each provide at an output an NRZ optical signal, at least two of the NRZ optical signals having substantially the same bit rate, each of the signals having a bit rate which is less than 100 Gbit/s and the sum of the bit rates of all of the at least three transmitters being at least equal to 100 Gbit/s, an NRZ to RZ converter associated with each transmitter which converts each NRZ signal into an optical RZ signal with the signal remaining in the optical domain during conversion, the optical RZ signal having the same bit rate as the corresponding NRZ signal, an optical time division multiplexer which converts the RZ signals into at least two further signals, one of the further signals being formed by bitwise interleaving the bits of the at least two of the RZ signals which have the same bit rate, and a polarisation multiplexer which processes the two further signals to provide two output signals of differing polarisation, each of the two output signals having the same bit rate as a respective one of the two further signals. The NRZ to RZ converters may be implemented using a SOA based device.

摘要翻译： 能够具有至少100吉比特/秒的传输速率的光发射机设备包括至少三个输入发射机，每个至少三个输入发射机在输出端提供NRZ光信号，NRZ光信号中的至少两个具有基本上相同的比特率， 具有小于100Gbit / s的比特率和所有至少三个发射机的比特率的总和至少等于100Gbit / s的信号，与每个发射机相关联的NRZ至RZ转换器，其转换 每个NRZ信号转换为在转换期间信号保留在光域中的光学RZ信号，光学RZ信号具有与相应的NRZ信号相同的比特率，光学时分复用器将RZ信号转换成至少两个另外的信号 通过对具有相同比特率的RZ信号中的至少两个的比特进行逐位交织来形成另外的信号之一，以及处理该t的多路复用器 还提供信号以提供不同极化的两个输出信号，两个输出信号中的每一个具有与两个另外的信号中的相应一个相同的比特率。 NRZ到RZ转换器可以使用基于SOA的设备来实现。

公开(公告)号：US20100034532A1

公开(公告)日：2010-02-11

申请号：US12440778

申请日：2006-09-11

申请人： Paolo Ghelfi ,  Filippo Cuglini ,  Tomasz Rogowski ,  Piero Castoldi ,  Rodolfo Di Muro ,  Bimal Nayar ,  Karin Essner

发明人： Paolo Ghelfi ,  Filippo Cuglini ,  Tomasz Rogowski ,  Piero Castoldi ,  Rodolfo Di Muro ,  Bimal Nayar ,  Karin Essner

IPC分类号： H04J14/00 ,  H04B10/08 ,  H04B17/00

CPC分类号： H04Q11/0005 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0217 ,  H04J14/0219 ,  H04J14/0221 ,  H04J14/0284 ,  H04J14/0293 ,  H04J14/0297 ,  H04Q2011/0015 ,  H04Q2011/0043

摘要： The invention relates to a communications node (10, 90, 100) for routing a plurality of Wavelength Division Multiplexed (WDM) optical signals, the node having a plurality of line units (12) between its inputs and outputs, each line unit including a splitter (14) and a Wavelength Selective Switch (WSS) (16), wherein the splitter (14) is arranged to split an incoming WDM signal into a plurality of WDM signals and to pass them to each WSS in the plurality of line units, each WSS (16) being arranged to selectively route any one or more channels of its received WDM signals to its associated output. Such an arrangement has the advantage of providing a more cost effective realisation of a node with a high nodal degree. The invention provides a technical solution to the problem of connecting a plurality of inputs to a plurality of outputs in a multi-port WDM node. The node has particular application in a mesh network where the nodal degree may be high. Using WSS technology avoids the requirement for many blockers to be used due to the inherent capability of WSSs to selectively block input channels.

摘要翻译： 本发明涉及用于路由多个波分复用（WDM）光信号的通信节点（10,90,100），该节点在其输入和输出之间具有多个线路单元（12），每个线路单元包括一个 分离器（14）和波长选择开关（WSS）（16），其中分配器（14）被布置成将输入的WDM信号分割成多个WDM信号并将其传递到多个线路单元中的每个WSS， 每个WSS（16）被布置成选择性地将其接收到的WDM信号的一个或多个信道路由到其相关联的输出。 这种布置具有提供具有高节点度的节点的更具成本效益的实现的优点。 本发明提供了将多个输入连接到多端口WDM节点中的多个输出的问题的技术方案。 节点在网状网络中具有特殊应用，其中节点度可能较高。 使用WSS技术避免了由于WSS的固有能力来选择性地阻止输入通道而需要使用许多阻塞器。

公开(公告)号：US07822078B2

公开(公告)日：2010-10-26

申请号：US12004137

申请日：2007-12-19

申请人： Paolo Fella ,  Rodolfo Di Muro

发明人： Paolo Fella ,  Rodolfo Di Muro

IPC分类号： H01S3/30

CPC分类号： H01S3/094003 ,  H01S3/1608

摘要： A method of producing green light signals, comprising coupling pump signals from at least one pump source into at least one erbium doped fiber (EDF) which cause ground state absorption (GSA), and excited state absorption (ESA) in erbium ions of the EDF, which produces green light signals, wherein the majority of the pump signals have a wavelength at which the probability of occurrence of ESA in the EDF is greater than the probability of occurrence of GSA in the EDF. The majority of the pump signals may have a wavelength in the range approximately 920 nm to approximately 980 nm, or in the region of 960 nm. An erbium doped fiber amplifier (EDFA) (1) for amplifying traffic-carrying signals may be pumped by green light signals produced by this method. A laser which produces green light signals may be constructed, which comprises at least one EDF, coupled to at least one pump source to receive pump signals therefrom, which cause GSA, and ESA in erbium ions of the EDF, which produces green light signals, the majority of the pump signals having a wavelength at which the probability of occurrence of ESA in the EDF is greater than the probability of occurrence of GSA in the EDF.

摘要翻译： 一种生产绿光信号的方法，包括将来自至少一个泵浦源的泵浦信号耦合到至少一个引起基态吸收的掺铒光纤（EDF），并且在EDF的铒离子中引发激发态吸收（ESA） ，其产生绿光信号，其中大多数泵浦信号具有在EDF中ESA发生概率大于EDF中GSA发生概率的波长。 大多数泵浦信号可以具有在大约920nm到大约980nm的范围内的波长，或者在960nm的范围内。 用于放大通信量信号的掺铒光纤放大器（EDFA）（1）可以由通过该方法产生的绿色光信号来泵浦。 可以构造产生绿色光信号的激光器，其包括耦合到至少一个泵浦源的至少一个EDF以从其接收泵浦信号，其导致产生绿色光信号的EDF的铒离子中的GSA和ESA， 大多数泵浦信号具有在EDF中发生ESA的可能性大于EDF中GSA发生概率的波长。

公开(公告)号：US20060153260A1

公开(公告)日：2006-07-13

申请号：US10531156

申请日：2003-10-14

申请人： Paolo Fella ,  Rodolfo Di Muro

发明人： Paolo Fella ,  Rodolfo Di Muro

IPC分类号： H01S3/14

CPC分类号： H01S3/094003 ,  H01S3/1608

摘要： A method of producing green light signals couples pump signals from at least one pump source into at least one erbium doped fiber (EDF) to cause ground state absorption (GSA) and excited state absorption (ESA) in erbium ions of the EDF, which produces green light signals. The majority of the pump signals have a wavelength at which the probability of occurrence of ESA in the EDF is greater than the probability of occurrence of GSA in the EDF. The majority of the pump signals may have a wavelength in the range approximately 920 nm to approximately 980 nm, or in the region of 960 nm. An erbium doped fiber amplifier (EDFA) for amplifying traffic-carrying signals may be pumped by green light signals produced by this method. A laser which produces green light signals may be constructed, which comprises at least one EDF, coupled to at least one pump source to receive pump signals therefrom, which cause GSA, and ESA in erbium ions of the EDF, which produces green light signals, the majority of the pump signals having a wavelength at which the probability of occurrence of ESA in the EDF is greater than the probability of occurrence of GSA in the EDF.

摘要翻译： 一种生产绿光信号的方法将来自至少一个泵浦源的泵浦信号耦合到至少一个掺铒光纤（EDF）中，以在EDF的铒离子中引起基态吸收（GSA）和激发态吸收（ESA），从而产生 绿灯信号。 大多数泵浦信号具有在EDF中ESA发生概率大于EDF中GSA发生概率的波长。 大多数泵浦信号可以具有在大约920nm到大约980nm的范围内的波长，或者在960nm的范围内。 用于放大通信量信号的掺铒光纤放大器（EDFA）可以由该方法产生的绿色光信号来泵浦。 可以构造产生绿色光信号的激光器，其包括耦合到至少一个泵浦源的至少一个EDF以从其接收泵浦信号，其导致产生绿色光信号的EDF的铒离子中的GSA和ESA， 大多数泵浦信号具有在EDF中发生ESA的可能性大于EDF中GSA发生概率的波长。

公开(公告)号：US20060204244A1

公开(公告)日：2006-09-14

申请号：US10533226

申请日：2003-10-13

申请人： Paolo Fella ,  Rodolfo Di Muro

发明人： Paolo Fella ,  Rodolfo Di Muro

IPC分类号： H04B10/08

CPC分类号： H04B10/294 ,  H04B10/2916

摘要： A system and method for controlling the gain of an optical amplifier receiving one or more optical input signal channels at a first end include a source for generating a gain control signal, which is input to the optical amplifier at the opposite end to the input signal channels. The gain control signal is generated at a power level that produces stimulated Brillouin scattering (SBS) in the optical amplifier.

摘要翻译： 用于控制在第一端接收一个或多个光输入信号通道的光放大器的增益的系统和方法包括用于产生增益控制信号的源，该增益控制信号被输入到输入信号通道相对端的光放大器 。 增益控制信号以在光放大器中产生受激布里渊散射（SBS）的功率电平产生。

公开(公告)号：US07170672B2

公开(公告)日：2007-01-30

申请号：US10529822

申请日：2003-09-29

申请人： Paolo Fella ,  Rodolfo Di Muro

发明人： Paolo Fella ,  Rodolfo Di Muro

IPC分类号： H01S3/00

CPC分类号： H04B10/2916 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1301 ,  H01S3/302 ,  H04B10/077 ,  H04B10/07955

摘要： A Raman amplifier for amplifying WDM radiation propagating along an optical fiber, the WDM radiation comprising a plurality of radiation components each having a selected waveband, comprises a plurality of optical radiation generators operable to generate pump radiation of a selected wavelength and power, the radiation being coupled into the fiber to optically amplify the WDM radiation. The generators are wavelength tuneable, and the power of the radiation components of the WDM radiation is measured after it has propagated along the fiber and has been amplified. The wavelength and power of operation of the generators are controlled in dependence upon the measured powers such as to make the measured powers substantially equal in magnitude and of a selected magnitude. To reduce polarization dependent gain where the pump radiation propagates in a direction along the optical fiber that is counter to the direction of propagation of the WDM radiation, each generator preferably comprises a plurality of radiation sources, preferably three, each one being operable to generate radiation having the same wavelength but with a different state of polarization. Advantageously, the three radiation sources are operable to generate radiation whose state of polarization is shifted by 60° to each other and which are combined using a polarization maintaining multiplexer.

摘要翻译： 一种用于放大沿着光纤传播的WDM辐射的拉曼放大器，包括多个具有选定波段的辐射分量的WDM辐射包括可操作以产生所选波长和功率的泵浦辐射的多个光辐射发生器，所述辐射是 耦合到光纤中以光学放大WDM辐射。 发生器是波长可调谐的，并且WDM辐射的辐射分量的功率在沿着光纤传播并被放大之后被测量。 根据所测量的功率来控制发电机的工作波长和功率，以使所测量的功率在幅度和选定幅度上基本相等。 为了减少偏振相关的增益，其中泵浦辐射在沿着光纤的方向沿与WDM辐射的传播方向相反的方向传播，每个发生器优选地包括多个辐射源，优选地三个，每个辐射源可操作以产生辐射 具有相同的波长但具有不同的极化状态。 有利地，三个辐射源可操作以产生其偏振态彼此偏移60°并且使用偏振保持多路复用器组合的辐射。

公开(公告)号：US08508842B2

公开(公告)日：2013-08-13

申请号：US12595512

申请日：2007-04-13

申请人： Rodolfo Di Muro

发明人： Rodolfo Di Muro

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/296 ,  H04B10/2935 ,  H04J14/0201 ,  H04J14/0221

摘要： An optical signal amplifier for use in optical networks operating in a ring configuration comprising a first doped optical fiber loop pumped by a first laser and a second optical fiber loop pumped by a second laser.

摘要翻译： 一种光信号放大器，用于以环形结构工作的光网络，包括由第一激光器泵浦的第一掺杂光纤环路和由第二激光器泵浦的第二光纤回路。

公开(公告)号：US07813650B2

公开(公告)日：2010-10-12

申请号：US10533226

申请日：2003-10-13

申请人： Paolo Fella ,  Rodolfo Di Muro

发明人： Paolo Fella ,  Rodolfo Di Muro

IPC分类号： H04B10/00 ,  H04B10/12

CPC分类号： H04B10/294 ,  H04B10/2916

摘要： A system and method for controlling the gain of an optical amplifier receiving one or more optical input signal channels at a first end include a source for generating a gain control signal, which is input to the optical amplifier at the opposite end to the input signal channels. The gain control signal is generated at a power level that produces stimulated Brillouin scattering (SBS) in the optical amplifier.

摘要翻译： 用于控制在第一端接收一个或多个光输入信号通道的光放大器的增益的系统和方法包括用于产生增益控制信号的源，该增益控制信号被输入到输入信号通道相对端的光放大器 。 增益控制信号以在光放大器中产生受激布里渊散射（SBS）的功率电平产生。

公开(公告)号：US20100195192A1

公开(公告)日：2010-08-05

申请号：US12595512

申请日：2007-04-13

申请人： Rodolfo Di Muro

发明人： Rodolfo Di Muro

IPC分类号： H04B10/17

CPC分类号： H04B10/296 ,  H04B10/2935 ,  H04J14/0201 ,  H04J14/0221

摘要： An optical signal amplifier for use in optical networks operating in a ring configuration comprising a first doped optical fibre loop pumped by a first laser and a second optical fibre loop pumped by a second laser.

摘要翻译： 一种光信号放大器，用于以环形结构工作的光网络，包括由第一激光器泵浦的第一掺杂光纤环路和由第二激光器泵浦的第二光纤回路。