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1.发明授权Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch 失效使用可配置的四端口波长选择性交叉开关在波分复用网络上提供多播服务公开(公告)号：US07366417B2
公开(公告)日：2008-04-29
申请号：US11328782
申请日：2006-01-10
申请人： Mark D. Feuer , Nicholas J. Frigo , Cedric F. Lam
发明人： Mark D. Feuer , Nicholas J. Frigo , Cedric F. Lam
IPC分类号： H04J14/00
CPC分类号： H04Q11/0005 , H04Q11/0062 , H04Q2011/0016 , H04Q2011/0022 , H04Q2011/0026 , H04Q2011/0032 , H04Q2011/0035 , H04Q2011/0047 , H04Q2011/0058
摘要： A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM signal is received from a hub node of the optical network, such as a unidirectional ring network or a bi-directional ring network. A four-port wavelength crossbar switch (4WCS) selectably switches selected wavelengths from the optical network to a modulator loop. The modulator loop includes a multicast modulator that modulates the selected plurality of wavelengths with the multicast data. Each modulated wavelength is then switched back to the optical network by the 4WCS switch, and sent to a plurality of subscriber nodes of the optical network. This architecture allows a facility provider to be physically separated from a content provider, and affords the flexibility of selectively delivering multicast content to individual subscribers.
摘要翻译： 一种方法和系统，其中波分复用（WDM）信号的选定波长用组播数据进行调制，用于在光网络上组播数据业务。 从光网络的集线器节点（例如单向环网或双向环网）接收WDM信号。 四端口波长交叉开关（4WCS）可选择地将所选波长从光网络切换到调制器环路。 调制器环路包括用多播数据调制所选择的多个波长的多播调制器。 然后通过4WCS交换机将每个调制波长切换回光网络，并发送到光网络的多个订户节点。 该架构允许设施提供者在物理上与内容提供商分离，并且提供选择性地将多播内容递送给个体用户的灵活性。
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2.发明授权Four-port wavelength-selective crossbar switches (4WCS) using reciprocal WDM MUX-DEMUX and optical circulator combination 失效使用倒数WDM MUX-DEMUX和光环行器组合的四端口波长选择性交叉开关（4WCS）公开(公告)号：US06751372B2
公开(公告)日：2004-06-15
申请号：US10026837
申请日：2001-12-27
申请人： Mark D. Feuer , Nicholas J. Frigo , Cedric F. Lam
发明人： Mark D. Feuer , Nicholas J. Frigo , Cedric F. Lam
IPC分类号： G02R628
CPC分类号： H04Q11/0005 , H04Q2011/0022 , H04Q2011/0026 , H04Q2011/0032 , H04Q2011/0035 , H04Q2011/0058
摘要： A four-port wavelength-selective crossbar switch generates an add/drop wavelength signal from a wave division multiplexed (WDM) signal using a plurality of double-sided reflectors that selectively reflects a selected wavelength channel signal of the WDM signal through optical circulators to provide low crosstalk between the dropped and added wavelength signals. The switch also reduces the number of WDM MUX-DEMUX required to one half that compared to a traditional approach. Furthermore, the switch can be designed to be wavelength cyclic with individual free spectral ranges that can be independently set to either through or add/drop states.
摘要翻译： 四端口波长选择性交叉开关使用多个双面反射器从波分复用（WDM）信号产生加/减波长信号，所述多个双面反射器通过光循环器选择性地反射WDM信号的选定波长信道信号，以提供 丢弃和添加的波长信号之间的低串扰。 与传统方法相比，该开关还将所需的WDM MUX-DEMUX数量减少了一半。 此外，开关可以被设计为波长循环，具有各自的自由光谱范围，其可以被独立地设置为通过或加/减状态。
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3.发明授权Delivering multicast services on a wavelength division multiplexed network using a configurable four-port wavelength selective crossbar switch 有权使用可配置的四端口波长选择性交叉开关在波分复用网络上提供多播服务公开(公告)号：US07027733B2
公开(公告)日：2006-04-11
申请号：US10026888
申请日：2001-12-27
申请人： Mark D. Feuer , Nicholas J. Frigo , Cedric F. Lam
发明人： Mark D. Feuer , Nicholas J. Frigo , Cedric F. Lam
IPC分类号： H04J14/00
CPC分类号： H04Q11/0005 , H04Q11/0062 , H04Q2011/0016 , H04Q2011/0022 , H04Q2011/0026 , H04Q2011/0032 , H04Q2011/0035 , H04Q2011/0047 , H04Q2011/0058
摘要： A method and a system in which selected wavelengths of a wavelength division multiplexed (WDM) signal are modulated with multicast data for multicasting data services on an optical network. The WDM signal is received from a hub node of the optical network, such as a unidirectional ring network or a bi-directional ring network. A four-port wavelength crossbar switch (4WCS) selectably switches selected wavelengths from the optical network to a modulator loop. The modulator loop includes a multicast modulator that modulates the selected plurality of wavelengths with the multicast data. Each modulated wavelength is then switched back to the optical network by the 4WCS switch, and sent to a plurality of subscriber nodes of the optical network. This architecture allows a facility provider to be physically separated from a content provider, and affords the flexibility of selectively delivering multicast content to individual subscribers.
摘要翻译： 一种方法和系统，其中波分复用（WDM）信号的选定波长用组播数据进行调制，用于在光网络上组播数据业务。 从光网络的集线器节点（例如单向环网或双向环网）接收WDM信号。 四端口波长交叉开关（4WCS）可选择地将所选波长从光网络切换到调制器环路。 调制器环路包括用多播数据调制所选择的多个波长的多播调制器。 然后通过4WCS交换机将每个调制波长切换回光网络，并发送到光网络的多个订户节点。 该架构允许设施提供者在物理上与内容提供商分离，并且提供选择性地将多播内容递送给个体用户的灵活性。
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4.发明授权Multiple input waveguide grating router for broadcast and multicast services 失效用于广播和多播服务的多输入波导光栅路由器公开(公告)号：US06697574B2
公开(公告)日：2004-02-24
申请号：US09822821
申请日：2001-04-02
IPC分类号： H04J1400
CPC分类号： H04Q11/0005 , H04J14/02 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0032 , H04Q2011/0047 , H04Q2011/0049
摘要： An optical telecommunications network suitable for carrying broadcast and switched services. The network includes a wavelength division multiplexing (WDM) coupled to a waveguide grating router (WGR). In accordance with the invention, an adjacent input port is connected with the same optical content. Thus, its outputs are adjacent (or wrapped around). According, the optical power in each of the broadcast bands at the outputs remains the same but is reduced by a factor of two in power for each channel but occupying twice as many channels. This has the effect of increasing the SNR by a factor of two.
摘要翻译： 适用于承载广播和交换业务的光通信网络。 网络包括耦合到波导光栅路由器（WGR）的波分复用（WDM）。 根据本发明，相邻的输入端口与相同的光学内容连接。 因此，其输出是相邻的（或缠绕的）。 据说，输出中每个广播频带的光功率保持不变，但每个频道的功率减少了2倍，但占用的频道数量是两倍。 这具有将SNR增加一倍的效果。
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5.发明授权System for flexible multiple broadcast service delivery over a WDM passive optical network based on RF block-conversion of RF service bands within wavelength bands 失效基于波段范围内RF服务频带的RF块转换的WDM无源光网络的灵活多广播业务传送系统公开(公告)号：US07085495B2
公开(公告)日：2006-08-01
申请号：US09916652
申请日：2001-07-30
IPC分类号： H04J14/00
CPC分类号： H04J14/02 , H04J14/0298
摘要： A system and method for simultaneous delivery of a plurality of independent blocks of 500 MHz digital broadcast television services, stacking a plurality of RF blocks on a plurality of spectrally sliced WDM optical bands. The method for delivering a plurality of video blocks to a user terminal serviced by a remote node comprises the steps of receiving, by a first WDM, a broadband signal from a broadband signal source, separating, by the first WDM, the broadband signal into a plurality of optical bands, modulating each of the plurality of optical bands with a composite signal representing data in a plurality of independent RF blocks to form a plurality of modulated signals, forwarding the plurality of modulated signals to a second WDM to form a combined broadcast signal, transmitting the combined broadcast signal over feeder fiber to a remote node, selecting a RF block for distribution over a distribution fiber to a conventional satellite set-up box at a user's site and forwarding the selected RF block to the user's site. A novel method and system for reducing spontaneous beat noise is also disclosed.
摘要翻译： 一种用于同时传送500MHz数字广播电视服务的多个独立块的系统和方法，在多个频谱分片的WDM光谱带上堆叠多个RF块。 用于将多个视频块传送到由远程节点服务的用户终端的方法包括以下步骤：由第一WDM从宽带信号源接收宽带信号，由第一WDM将宽带信号分离成 多个光带，用表示多个独立RF块中的数据的复合信号调制多个光带中的每一个以形成多个调制信号，将多个调制信号转发到第二WDM以形成组合广播信号 通过馈线光纤将组合的广播信号发送到远程节点，通过分配光纤选择RF块以在用户的现场向传统的卫星设置盒传送，并将所选择的RF块转发到用户的站点。 还公开了一种用于减少自发节拍噪声的新颖方法和系统。
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6.发明授权System for flexible multiple broadcast service delivery over a WDM passive optical network based on RF block-conversion, of RF service bands within wavelength bands 有权通过基于射频块转换的WDM无源光网络在波段内的射频业务频带进行灵活多播服务的系统公开(公告)号：US07860393B1
公开(公告)日：2010-12-28
申请号：US12313716
申请日：2008-11-24
IPC分类号： H04J14/00
CPC分类号： H04J14/02 , H04J14/0298
摘要： A system and method for simultaneous delivery of a plurality of independent blocks of 500 MHz digital broadcast television services, stacking a plurality of RF blocks on a plurality of spectrally sliced WDM optical bands. The method for delivering a plurality of video blocks to a user terminal serviced by a remote node comprises the steps of receiving, by a first WDM, a broadband signal from a broadband signal source, separating, by the first WDM, the broadband signal into a plurality of optical hands, modulating each of the plurality of optical bands with a composite signal representing data in a plurality of independent RF blocks to form a plurality of modulated signals, forwarding the plurality of modulated signals to a second WDM to form a combined broadcast signal, transmitting the combined broadcast signal over feeder fiber to a remote node, selecting a RF block for distribution over a distribution fiber to a conventional satellite set-top box at a user's site and forwarding the selected RF block to the user's site. A novel method and system for reducing spontaneous beat noise is also described.
摘要翻译： 一种用于同时传送500MHz数字广播电视服务的多个独立块的系统和方法，在多个频谱分片的WDM光谱带上堆叠多个RF块。 用于将多个视频块传送到由远程节点服务的用户终端的方法包括以下步骤：由第一WDM从宽带信号源接收宽带信号，由第一WDM将宽带信号分离成 多个光手，用表示多个独立RF块中的数据的复合信号调制多个光带中的每一个以形成多个调制信号，将多个调制信号转发到第二WDM以形成组合的广播信号 通过馈线光纤将组合的广播信号发送到远程节点，通过分配光纤选择RF块以传送到用户现场的常规卫星机顶盒，并将所选择的RF块转发到用户的站点。 还描述了一种用于减少自发节拍噪声的新颖方法和系统。
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7.发明授权公开(公告)号：US06871020B1
公开(公告)日：2005-03-22
申请号：US09825019
申请日：2001-04-03
CPC分类号： H04J14/0221 , H04B10/07955 , H04J14/0201 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/021 , H04J14/0213
摘要： A power spectrum measurement system and a method monitor a power spectrum of N-channels in an M-channel wavelength division multiplexed optical communication network, where N is less than or equal to M. An add-drop node in the network drops a channel and adds a channel for transmitting data on the network. The added channel has the same wavelength as the dropped channel. The power of the added channel is controlled to minimize crosstalk. The power spectrum measurement system includes a detection circuit and a processing circuit. The detection circuit is an inexpensive, scalable circuit for detecting the power of each channel. The processing circuit is connected to the detection circuit and calculates the power of each channel based upon the power detected by the detection circuit. The processing circuit also calculates power of the added channel for minimizing crosstalk. The calculated power of the added channel is a function of the powers measured for the N-channels, including but not limited to the average power of the N-channels or the powers of the channels adjacent the added channel. The calculated power is transmitted to the node adding the channel for controlling the power of the added channel.
摘要翻译： 功率谱测量系统和监视M信道波分复用光通信网络中的N信道的功率谱的方法，其中N小于或等于M.网络中的添加点节点丢弃信道， 添加了一个在网络上传输数据的通道。 添加的通道具有与丢弃通道相同的波长。 控制附加通道的功率以最小化串扰。 功率谱测量系统包括检测电路和处理电路。 检测电路是用于检测每个通道的功率的廉价的可扩展电路。 处理电路连接到检测电路，并根据检测电路检测到的功率来计算每个通道的功率。 处理电路还计算附加信道的功率以最小化串扰。 所添加的信道的计算功率是对N个信道测量的功率的函数，包括但不限于N个信道的平均功率或与相邻信道相邻的信道的功率。 所计算的功率被传送到添加用于控制所添加的信道的功率的信道的节点。
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8.发明授权Method for flexible multiple broadcast service delivery over a WDM passive optical network based on RF block-conversion of RF service bands with wavelength bands 有权基于具有波段的RF服务频带的RF块转换的通过WDM无源光网络进行灵活多广播业务传送的方法公开(公告)号：US07725028B1
公开(公告)日：2010-05-25
申请号：US11901741
申请日：2007-09-17
IPC分类号： H04J14/00
CPC分类号： H04J14/0282 , H04J14/0226 , H04J14/0234 , H04J14/0298 , H04N7/22
摘要： A system and method for simultaneous delivery of a plurality of independent blocks of 500 MHz digital broadcast television services, stacking a plurality of RF blocks on a plurality of spectrally sliced WDM optical bands. The method for delivering a plurality of video blocks to a user terminal serviced by a remote node comprises the steps of receiving, by a first WDM, a broadband signal from a broadband signal source, separating, by said first WDM, said broadband signal into a plurality of optical bands, modulating each of the plurality of optical bands with a composite signal representing data in a plurality of independent RF blocks to form a plurality of modulated signals, forwarding said plurality of modulated signals to a second WDM to form a combined broadcast signal, transmitting said combined broadcast signal over feeder fiber to a remote node, selecting a RF block for distribution over a distribution fiber to a conventional satellite set-up box at a user's site and forwarding said selected RF block to said user's site. A novel method and system for reducing spontaneous beat noise is also described.
摘要翻译： 一种用于同时传送500MHz数字广播电视服务的多个独立块的系统和方法，在多个频谱分片的WDM光谱带上堆叠多个RF块。 将多个视频块传送到由远程节点服务的用户终端的方法包括以下步骤：由第一WDM从宽带信号源接收宽带信号，由所述第一WDM将所述宽带信号分离成 多个光带，用表示多个独立RF块中的数据的复合信号调制多个光带中的每一个以形成多个调制信号，将所述多个调制信号转发到第二WDM以形成组合广播信号 通过馈线光纤将所述组合的广播信号发射到远程节点，通过分配光纤选择RF块以在用户的站点处传统的卫星设置盒，并将所选的RF块转发到所述用户的站点。 还描述了一种用于减少自发节拍噪声的新颖方法和系统。
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9.发明授权System for flexible multiple broadcast service delivery over a WDM passive optical network based on RF block-conversion, of RF service bands within wavelength bands 有权通过基于射频块转换的WDM无源光网络在波段内的射频业务频带进行灵活多播服务的系统公开(公告)号：US07466919B1
公开(公告)日：2008-12-16
申请号：US11448297
申请日：2006-06-07
IPC分类号： H04J14/00
CPC分类号： H04J14/02 , H04J14/0298
摘要： A system and method for simultaneous delivery of a plurality of independent blocks of 500 MHz digital broadcast television services, stacking a plurality of RF blocks on a plurality of spectrally sliced WDM optical bands. The method for delivering a plurality of video blocks to a user terminal serviced by a remote node comprises the steps of receiving, by a first WDM, a broadband signal from a broadband signal source, separating, by the first WDM, the broadband signal into a plurality of optical bands, modulating each of the plurality of optical bands with a composite signal representing data in a plurality of independent RF modulated signals to form a plurality of modulated signals, forwarding the plurality of modulated signals to a second WDM to form a combined broadcast signal, transmitting the combined broadcast signal over feeder fiber to a remote node, selecting a RF block for distribution over a distribution fiber to a conventional satellite set-to box at a user's site and forwarding the selected RF block to the user's site. A novel method and system for reducing spontaneous beat noise is also disclosed.
摘要翻译： 一种用于同时传送500MHz数字广播电视服务的多个独立块的系统和方法，在多个频谱分片的WDM光谱带上堆叠多个RF块。 用于将多个视频块传送到由远程节点服务的用户终端的方法包括以下步骤：由第一WDM从宽带信号源接收宽带信号，由第一WDM将宽带信号分离成 多个光带，用表示多个独立RF调制信号中的数据的复合信号调制多个光带中的每一个以形成多个调制信号，将多个调制信号转发到第二WDM以形成组合广播 信号，通过馈线光纤将组合的广播信号发送到远程节点，选择RF块以通过分布光纤分配到用户现场的常规卫星设置盒，并将所选择的RF块转发到用户的站点。 还公开了一种用于减少自发节拍噪声的新颖方法和系统。
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10.发明授权Method of flexible multiple broadcast service delivery over a WDM passive optical network based on RF Block-conversion of RF service bands within wavelength bands 失效基于波段内的RF服务频带的RF块转换的WDM无源光网络的灵活多广播服务传送方法公开(公告)号：US07286761B2
公开(公告)日：2007-10-23
申请号：US09916648
申请日：2001-07-30
IPC分类号： H04J14/00
CPC分类号： H04J14/02 , H04J14/0298
摘要： A system and method for simultaneous delivery of a plurality of independent blocks of 500 MHz digital broadcast television services, stacking a plurality of RF blocks on a plurality of spectrally sliced WDM optical bands. The method for delivering a plurality of video blocks to a user terminal serviced by a remote node comprises the steps of receiving, by a first WDM, a broadband signal from a broadband signal source, separating, by the first WDM, the broadband signal into a plurality of optical bands, modulating each of the plurality of optical bands with a composite signal representing data in a plurality of independent RF blocks to form a plurality of modulated signals, forwarding the plurality of modulated signals to a second WDM to form a combined broadcast signal, transmitting the combined broadcast signal over feeder fiber to a remote node, selecting a RF block for distribution over a distribution fiber to a conventional satellite set-up box at a user's site and forwarding the selected RF block to the user's site. A novel method and system for reducing spontaneous beat noise is also disclosed.
摘要翻译： 一种用于同时传送500MHz数字广播电视服务的多个独立块的系统和方法，在多个频谱分片的WDM光谱带上堆叠多个RF块。 用于将多个视频块传送到由远程节点服务的用户终端的方法包括以下步骤：由第一WDM从宽带信号源接收宽带信号，由第一WDM将宽带信号分离成 多个光带，用表示多个独立RF块中的数据的复合信号调制多个光频带中的每一个以形成多个调制信号，将多个调制信号转发到第二WDM以形成组合广播信号 通过馈线光纤将组合的广播信号发送到远程节点，通过分配光纤选择RF块以在用户的现场向传统的卫星设置盒传送，并将所选择的RF块转发到用户的站点。 还公开了一种用于减少自发节拍噪声的新颖方法和系统。
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