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公开(公告)号：US20060227412A1
公开(公告)日：2006-10-12
申请号：US10542296
申请日：2003-12-23
IPC分类号： H01S3/00
CPC分类号： H04B10/291 , H04J14/0201 , H04J14/0221 , H04J14/0283
摘要： A ringed optical transmission system comprises along the ring rare earth doped fiber amplifiers. The system has a gain peak with a λASE wavelength outside the λ1-λn band of the channels transmitted along the ring, the wavelength corresponding to an ASE emission peak of the amplifiers in the ring. In this manner a lasing peak forming a gain stabilization signal is produced.
摘要翻译： 环形光传输系统包括沿着环的稀土掺杂光纤放大器。 该系统具有在沿着环传输的通道的λ1 SUB-N SUB带外的λ波长的增益峰，波长 对应于环中放大器的ASE发射峰值。 以这种方式产生形成增益稳定信号的激光峰。
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公开(公告)号：US07583432B2
公开(公告)日：2009-09-01
申请号：US10542296
申请日：2003-12-23
CPC分类号： H04B10/291 , H04J14/0201 , H04J14/0221 , H04J14/0283
摘要： A ringed optical transmission system comprises along the ring rare earth doped fiber amplifiers. The system has a gain peak with a λASE wavelength outside the λ1-λn band of the channels transmitted along the ring, the wavelength corresponding to an ASE emission peak of the amplifiers in the ring. In this manner a lasing peak forming a gain stabilization signal is produced.
摘要翻译： 环形光传输系统包括沿着环的稀土掺杂光纤放大器。 该系统具有在沿着环传输的通道的λ1-lambdan带外的λASE波长的增益峰，该波长对应于环中的放大器的ASE发射峰。 以这种方式产生形成增益稳定信号的激光峰。
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3.发明申请公开(公告)号：US20120189301A1
公开(公告)日：2012-07-26
申请号：US13388151
申请日：2009-07-31
CPC分类号： H04J14/0282 , H04J14/0227 , H04J14/0257 , H04J14/026
摘要： The invention relates in general to a method, an apparatus and a unit for operating a Wavelength Division Multiplexing Access Network 25, and in particular to unbundling wavelengths in the network 25. Embodiments of the invention disclose monitoring a plurality of wavelengths of the Wavelength Division Multiplexing Access Network 25 to determine at least one available wavelength that is free for use. The transmitter then automatically transmits data to at least one user device 22 via at least one available wavelength.
摘要翻译： 本发明一般涉及一种用于操作波分复用接入网25的方法，装置和单元，特别涉及网络25中的非捆绑波长。本发明的实施例公开了监测波分复用的多个波长 接入网络25以确定至少一个可用的可用波长。 然后，发射机经由至少一个可用波长自动向至少一个用户设备22发送数据。
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公开(公告)号：US08478125B2
公开(公告)日：2013-07-02
申请号：US12600606
申请日：2008-04-24
申请人： Nicola Calabretta , Marco Presi , Giampiero Contestabile , Pierpaolo Ghiggino , Ernesto Ciaramella , Fabio Cavaliere , Roberto Proietti
发明人： Nicola Calabretta , Marco Presi , Giampiero Contestabile , Pierpaolo Ghiggino , Ernesto Ciaramella , Fabio Cavaliere , Roberto Proietti
CPC分类号： H04J14/0226 , H04B10/677 , H04J14/02 , H04J14/0246 , H04J14/0247 , H04J14/0252 , H04J14/0282 , H04J2014/0253 , H04Q11/0067 , H04Q2011/0086 , H04Q2011/009
摘要： An optical PON network comprises a central office which generates N DPSK modulated optical signals, where N is an integer greater than 1, an optical coupling which connects the N signals to at least one optical fiber, a passive distribution node located remotely from the central office which has at least one input port that is coupled to the fiber and a plurality of output ports, the node being arranged to transmit a first wavelength of the N signals to at least one of its output ports, and at least one optical network unit connected through a respective optical fiber to the first output port of the passive distribution node. The passive distribution node comprises an arrayed waveguide grating which provides a passive optical connection between its input port and the first output port and which for that connection functions as a bandpass filter having a profile and bandwidth selected such that the DPSK optical signal passed to the input node is converted to an intensity modulated signal at the output port.
摘要翻译： 光PON网络包括产生N个DPSK调制光信号的中心局，其中N是大于1的整数，将N个信号连接到至少一个光纤的光耦合器，远离中心局的被动分配节点 其具有耦合到光纤的至少一个输入端口和多个输出端口，所述节点被布置成将N个信号的第一波长发射到其输出端口中的至少一个，并且至少一个光网络单元连接 通过相应的光纤到被动分配节点的第一输出端口。 无源分布节点包括阵列波导光栅，其在其输入端口和第一输出端口之间提供无源光学连接，并且对于该连接起到带通滤波器的作用，该带通滤波器具有被选择的轮廓和带宽，使得DPSK光信号传递到输入端 节点在输出端口转换为强度调制信号。
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公开(公告)号：US20080095534A1
公开(公告)日：2008-04-24
申请号：US11575049
申请日：2005-09-01
申请人： Pierpaolo Ghiggino
发明人： Pierpaolo Ghiggino
CPC分类号： H04Q11/0067 , H04Q2011/0016 , H04Q2011/0075 , H04Q2011/0081
摘要： The invention relates to telecommunications network (10), and in particular to a Passive Optical Network (PON), and a method for operation thereof. The telecommunications network (10, 60) is capable of handling increases in bandwidth per user over the predicted lifetime of the network infrastructure. The telecommunications network (10, 60) further utilises a greater proportion of the potential bandwidth carrying capacity of the network and minimises maintenance requirements. The network (10, 60) is readily adaptable to future bandwidth requirements because redundant optic fibres (18, 27) are provided for making more connections as required. The cost of laying redundant optic fibres (18, 27) is minimal when compared to the cost of laying additional optic fibres at a later date. Furthermore the cost of maintaining the network is kept to a minimum because of the use of PON technology and consequently the overall cost of installing and maintaining the network over a predicted lifetime of 20 years is reduced.
摘要翻译： 本发明涉及电信网络（10），特别涉及无源光网络（PON）及其操作方法。 电信网络（10,60）能够在网络基础设施的预计寿命内处理每个用户的带宽增加。 电信网络（10,60）进一步利用网络的较大比例的潜在带宽承载能力，并最小化维护需求。 网络（10,60）容易适应未来的带宽要求，因为冗余光纤（18,27）被提供用于根据需要进行更多的连接。 与以后敷设额外的光纤的成本相比，铺设冗余光纤（18,27）的成本是最小的。 此外，由于使用PON技术，维护网络的成本保持在最低水平，因此在20年的预计寿命内安装和维护网络的总体成本降低。
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公开(公告)号：US08554078B2
公开(公告)日：2013-10-08
申请号：US12993945
申请日：2008-08-12
IPC分类号： H04J14/00
CPC分类号： H04J14/0227 , H04J14/0226 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282
摘要： An optical network includes a first passive optical network optical line terminal, coupled to a first port of a first optical filter arrangement, and a second passive optical network optical line terminal, coupled to a second port of the first optical filter arrangement. An optical coupler is connected between the second passive optical network line terminal and the second port of the first optical filter arrangement. A passive optical distribution node is coupled to a third port of the first optical filter arrangement.
摘要翻译： 光网络包括耦合到第一滤光器装置的第一端口的第一无源光网络光线路终端和耦合到第一光学滤波器装置的第二端口的第二无源光网络光线路终端。 光耦合器连接在第二无源光网络线路终端和第一光学滤波器装置的第二端口之间。 无源光分配节点耦合到第一光学滤波器装置的第三端口。
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公开(公告)号：US20100239258A1
公开(公告)日：2010-09-23
申请号：US12600606
申请日：2008-04-24
申请人： Nicola Calabretta , Marco Presi , Giampiero Contestabile , Pierpaolo Ghiggino , Ernesto Ciaramella , Fabio Cavaliere , Roberto Proiettii
发明人： Nicola Calabretta , Marco Presi , Giampiero Contestabile , Pierpaolo Ghiggino , Ernesto Ciaramella , Fabio Cavaliere , Roberto Proiettii
IPC分类号： H04J14/02
CPC分类号： H04J14/0226 , H04B10/677 , H04J14/02 , H04J14/0246 , H04J14/0247 , H04J14/0252 , H04J14/0282 , H04J2014/0253 , H04Q11/0067 , H04Q2011/0086 , H04Q2011/009
摘要： An optical PON network comprises a central office which generates N DPSK modulated optical signals, where N is an integer greater than 1, an optical coupling which connects the N signals to at least one optical fibre, a passive distribution mode located remotely from the central office which has at least one input port that is coupled to the fibre and a plurality of output node being arranged to transmit a first wavelength of the N signals to at least one of its output ports, and at least one optical network unit connected through a respective optical fibre to the first output port of the passive distribution node. The passive distribution node comprises an arrayed waveguide grating which provides a passive optical connection between its input port and the first output port and which for that connection functions as a bandpass filter having a profile and bandwidth selected such that the DPSK optical signal passed to the input node is converted to an intensity modulated signal at the output port.
摘要翻译： 光PON网络包括产生N个DPSK调制光信号的中心局，其中N是大于1的整数，将N个信号连接到至少一个光纤的光耦合，远离中心局的被动分配模式 其具有耦合到光纤的至少一个输入端口，并且多个输出节点被布置为将N个信号的第一波长发射到其输出端口中的至少一个，以及至少一个光网络单元，其通过相应的 光纤到被动分配节点的第一个输出端口。 无源分布节点包括阵列波导光栅，其在其输入端口和第一输出端口之间提供无源光学连接，并且对于该连接起到带通滤波器的作用，该带通滤波器具有被选择的轮廓和带宽，使得DPSK光信号传递到输入端 节点在输出端口转换为强度调制信号。
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公开(公告)号：US08666250B2
公开(公告)日：2014-03-04
申请号：US12921370
申请日：2008-05-27
CPC分类号： H04J14/0298 , H04J14/0226 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0282
摘要： An optical network terminal (ONT) for use in an optical access network and comprising: an optical transceiver arranged to communicate with an optical line terminal using a wavelength which is modulated to carry sub-channels; a second transceiver arranged to communicate with a number of subscriber equipment using respective subscriber equipment channels; the ONT arranged to automatically map each subscriber equipment channel to a respective sub-channel of the wavelength without using an address associated with the respective subscriber equipment.
摘要翻译： 一种用于光接入网络的光网络终端（ONT），包括：光收发机，被配置为使用被调制以承载子信道的波长与光线路终端进行通信; 布置成使用相应的用户设备信道与多个订户设备进行通信的第二收发机; ONT被安排成将每个用户设备信道自动映射到波长的相应子信道，而不使用与各个用户设备相关联的地址。
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公开(公告)号：US20110158644A1
公开(公告)日：2011-06-30
申请号：US12675018
申请日：2007-08-30
IPC分类号： H04J14/00
CPC分类号： H04J14/0298 , H04J14/0227 , H04J14/0247 , H04J14/0252 , H04J14/0282
摘要： The invention relates to improvements in or relating to multicarrier communication and includes a method and a system for communication between an optical line terminal and a plurality of users over a single optical fibre. A portion of a down-stream optical signal is input to an optical circuit, the downstream signal comprising a plurality of subcarriers modulated at a first frequency, the portion of the downstream optical signal is processed at the optical circuit to remove the plurality of subcarriers and to change the first frequency into a second frequency. The processed portion of the downstream signal is then used for communication in the upstream direction.
摘要翻译： 本发明涉及对多载波通信的改进或涉及多载波通信，并且包括用于通过单个光纤在光线路终端与多个用户之间进行通信的方法和系统。 下行光信号的一部分被输入到光电路，下行信号包括以第一频率调制的多个子载波，下行光信号的部分在光电路处理以去除多个副载波， 以将第一频率改变为第二频率。 然后，将下行信号的处理部分用于上行方向的通信。
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公开(公告)号：US07218832B2
公开(公告)日：2007-05-15
申请号：US10380813
申请日：2001-09-28
申请人： Pierpaolo Ghiggino , Alfredo Palagi
发明人： Pierpaolo Ghiggino , Alfredo Palagi
CPC分类号： H04L25/03343
摘要： In an optical data transmission system, high frequency pulsed optical signals are transmitted along an optical fiber. These pulses are attenuated and distorted by transmission over long optical fibers making detection of data difficult at the receiving end. The allowable pulse profile is determined by an eye diagram which is non-symmetrical with respect to logic 1 and 0 levels. By positioning the eye diagram closer to the logic 0 level, detection in the presence of noise introduced during transmission of the optical pulses, can be significantly improved.
摘要翻译： 在光数据传输系统中，高频脉冲光信号沿光纤传输。 这些脉冲通过长光纤的传输衰减衰减，从而使接收端的数据难以检测。 允许的脉冲分布由相对于逻辑1和0电平非对称的眼图确定。 通过将眼图定位为更接近逻辑0电平，可以显着改善在光脉冲传输期间引入的噪声存在的检测。
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