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1. 发明授权

US08320760B1 Passive optical network with asymmetric modulation scheme 有权
标题翻译：无源光网络采用非对称调制方案
公开(公告)号：US08320760B1
公开(公告)日：2012-11-27
申请号：US13288555
申请日：2011-11-03
申请人： Cedric F. Lam , Hong Liu , Ryohei Urata
发明人： Cedric F. Lam , Hong Liu , Ryohei Urata
IPC分类号： H04J14/00
CPC分类号： H04J14/002 , H04J14/0257 , H04J14/0282
摘要： A passive optical network couples a WDM optical line terminal (“OLT”) to WDM optical network units (“ONUs”). The WDM OLT includes an optical transmitter array with coherent transmitters to generate downstream WDM signals encoded using phase modulation, an optical receiver array with direct detection photo-detectors to receive upstream WDM signals encoded with amplitude modulation, and an optical diplexer optically coupled to the optical transmitter array and the optical receiver array. The WDM ONU includes a tunable optical transmitter having a first tunable laser source coupled to generate a selectable upstream carrier wavelength and direct amplitude modulation circuitry coupled to amplitude modulate the first tunable laser source and a tunable optical receiver having coherent detection circuitry to demodulate phase information from the downstream WDM signals and a second tunable laser source operated as a local oscillator and coupled to tune to a selectable downstream carrier wavelength.
摘要翻译：无源光网络将WDM光线路终端（OLT）耦合到WDM光网络单元（ONU）。 WDM OLT包括具有相干发射机的光发射机阵列以产生使用相位调制编码的下行WDM信号，具有直接检测光检测器的光接收器阵列以接收以幅度调制编码的上行WDM信号，以及与光学耦合的光双工器发射器阵列和光接收器阵列。 WDM ONU包括可调光发射机，其具有耦合以产生可选择的上行载波波长的第一可调谐激光源和耦合到幅度调制第一可调谐激光源的直接幅度调制电路，以及具有相干检测电路的可调谐光学接收器，以从下游WDM信号和作为本地振荡器操作的第二可调谐激光源，并被耦合以调谐到可选择的下行载波波长。

2. 发明申请

US20110292953A1 Tunable Multi-Wavelength Semiconductor Laser Array For Optical Communications Based On Wavelength Division Multiplexing 有权
标题翻译：基于波分复用的光通信可调多波长半导体激光阵列
公开(公告)号：US20110292953A1
公开(公告)日：2011-12-01
申请号：US12788121
申请日：2010-05-26
申请人： Hong Liu , Cedric F. Lam
发明人： Hong Liu , Cedric F. Lam
IPC分类号： H01S3/10
CPC分类号： H01S5/06 , H01S5/005 , H01S5/0265 , H01S5/06256 , H01S5/1209 , H01S5/1215 , H01S5/4087 , H04B10/506
摘要： Techniques, devices and systems for optical communications based on wavelength division multiplexing (WDM) that use tunable multi-wavelength laser transmitter modules.
摘要翻译：基于使用可调谐多波长激光发射器模块的波分复用（WDM）的光通信技术，设备和系统。

3. 发明授权

US08781322B2 Migratable wavelength division multiplexing passive optical network 有权
标题翻译：可移动波分复用无源光网络
公开(公告)号：US08781322B2
公开(公告)日：2014-07-15
申请号：US13205055
申请日：2011-08-08
申请人： Cedric F. Lam , Hong Liu
发明人： Cedric F. Lam , Hong Liu
IPC分类号： H04J14/00
CPC分类号： H04J14/0282 , H04J14/0232 , H04J14/0235 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0265
摘要： A hybrid passive optical network (“PON”) includes a time-division multiplexing (“TDM”) optical line terminal (“OLT”) and a wavelength-division multiplexing (“WDM”) OLT. The TDM OLT communicates with a first group of customer premises (“CPs”) via TDM signals while the WDM OLT communicates with a second group of CPs via WDM signals. A remote node power splitter is coupled to receive the TDM and WDM signals and broadcast both the TDM signals and the WDM signals on all of its ports facing towards the CPs. Optical filters are disposed between the remote node power splitter and the second group of CPs. Each optical filter is configured to pass a sub-group of the WDM signals while blocking other WDM signals such that each of the second group of CPs receives its own allocation of WDM signals but does not receive WDM signals allocated to other CPs of the second group of CPs.
摘要翻译：混合无源光网络（“PON”）包括时分复用（“TDM”）光线路终端（“OLT”）和波分复用（“WDM”）OLT。 TDM OLT经由TDM信号与第一组客户端（“CP”）通信，而WDM OLT经由WDM信号与第二组CPC通信。远程节点功率分配器被耦合以接收TDM和WDM信号，并且在其面向CP的所有端口上广播TDM信号和WDM信号。光学滤波器设置在远程节点功率分配器和第二组CP之间。每个滤光器被配置成通过WDM信号的子组同时阻挡其它WDM信号，使得第二组CP中的每一个接收到其自己的WDM信号分配，但是不接收分配给第二组的其他CP的WDM信号的CP。

4. 发明授权

US08457165B2 Tunable multi-wavelength semiconductor laser array for optical communications based on wavelength division multiplexing 有权
标题翻译：基于波分复用的光通信可调谐多波长半导体激光阵列
公开(公告)号：US08457165B2
公开(公告)日：2013-06-04
申请号：US12788121
申请日：2010-05-26
申请人： Hong Liu , Cedric F. Lam
发明人： Hong Liu , Cedric F. Lam
IPC分类号： H01S3/10
CPC分类号： H01S5/06 , H01S5/005 , H01S5/0265 , H01S5/06256 , H01S5/1209 , H01S5/1215 , H01S5/4087 , H04B10/506
摘要： Techniques, devices and systems for optical communications based on wavelength division multiplexing (WDM) that use tunable multi-wavelength laser transmitter modules.
摘要翻译：基于使用可调多波长激光发射器模块的波分复用（WDM）的光通信技术，设备和系统。

5. 发明授权

US08953942B1 Hybrid WDM-TDM passive optical network 有权
标题翻译：混合WDM-TDM无源光网络
公开(公告)号：US08953942B1
公开(公告)日：2015-02-10
申请号：US13458360
申请日：2012-04-27
申请人： Cedric F. Lam , Ryohei Urata , Hong Liu , Yut Loy Chan
发明人： Cedric F. Lam , Ryohei Urata , Hong Liu , Yut Loy Chan
IPC分类号： H04J14/00 , H04J14/08
CPC分类号： H04J14/0282 , H04J14/0256
摘要： A technique for providing time division multiplexing (“TDM”) and wavelength division multiplexing (“WDM”) communication services to customer premises (“CP”) over a passive optical network (“PON”) includes multiplexing a downstream TDM signal with downstream WDM signals onto a fiber trunk line coupled between a central office and a remote node (“RN”), separating the downstream WDM signals from the downstream TDM signal at the RN with a wavelength selective filter, power splitting the downstream TDM signal at the RN onto a plurality of fiber access lines as split TDM signals; and recombining each of the WDM signals with a corresponding one of the split TDM signals onto a corresponding one of the fiber access lines.
摘要翻译：通过无源光网络（“PON”）向客户驻地（“CP”）提供时分多路复用（“TDM”）和波分复用（“WDM”）通信服务的技术包括将下游TDM信号与下行WDM 信号到耦合在中心局和远程节点（“RN”）之间的光纤干线上，用下行WDM信号与RN处的下行TDM信号用波长选择滤波器分离，将RN处的下行TDM信号分解功率多个光纤接入线作为分离TDM信号; 以及将每个所述WDM信号与所述分离的TDM信号中的相应一个信号重新组合到相应的所述光纤接入线路中。

6. 发明授权

US08693866B1 Fiber diagnosis system for WDM optical access networks 有权
标题翻译： WDM光接入网络的光纤诊断系统
公开(公告)号：US08693866B1
公开(公告)日：2014-04-08
申请号：US13355233
申请日：2012-01-20
申请人： Cedric F. Lam , Ben W. Segura , Ryohei Urata , Hong Liu
发明人： Cedric F. Lam , Ben W. Segura , Ryohei Urata , Hong Liu
IPC分类号： H04B10/00
CPC分类号： H04B10/071 , H04Q11/0067 , H04Q2011/0083
摘要： A technique for detecting a fiber fault in a WDM optical access network includes launching a test signal into a fiber trunk line linking a central office (“CO”) to a remote node (“RN”) of the WDM optical access network. The test signal is generated by an optical time domain reflectometry unit to simultaneously fault test fiber access lines linking the RN to customer premises. The test signal is separated from downstream WDM signals at the RN. The test signal is power split at the RN into a plurality of access line test signals. The access line test signals are each recombined with a corresponding one of the downstream WDM signals onto a corresponding one of the fiber access lines. Test signal reflections are received at the CO from the fiber access lines as a reflection signature and analyzed to identify a location of the fiber fault.
摘要翻译：一种用于检测WDM光接入网络中的光纤故障的技术包括将测试信号发射到连接WDM光接入网络的中心局（“CO”）到远程节点（“RN”）的光纤干线。测试信号由光时域反射测量单元产生，以同时故障测试将RN连接到客户驻地的光纤接入线路。测试信号与RN处的下行WDM信号分离。测试信号在RN处被分配成多个接入线测试信号。接入线路测试信号各自与下行WDM信号中的相应一个信号复合到相应的一条光纤接入线路上。在来自光纤接入线路的CO处接收到测试信号反射作为反射特征，并进行分析以识别光纤故障的位置。

7. 发明授权

US08472805B2 Tunable multi-wavelength optical transmitter and transceiver for optical communications based on wavelength division multiplexing 有权
标题翻译：基于波分复用的光通信可调谐多波长光发射机和收发器
公开(公告)号：US08472805B2
公开(公告)日：2013-06-25
申请号：US12788204
申请日：2010-05-26
申请人： Cedric F. Lam , Hong Liu
发明人： Cedric F. Lam , Hong Liu
IPC分类号： H04B10/04 , H04J14/02
CPC分类号： H04J14/02 , H01S5/0265 , H01S5/06256 , H01S5/4031 , H01S5/4087 , H04J14/0279
摘要： Techniques, devices and systems for optical communications based on wavelength division multiplexing (WDM) that use tunable multi-wavelength laser transmitter modules.
摘要翻译：基于使用可调谐多波长激光发射器模块的波分复用（WDM）的光通信技术，设备和系统。

8. 发明申请

US20130039656A1 MIGRATABLE WAVELENGTH DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK 有权
标题翻译：可迁移的波长部分多路复用被动光网络
公开(公告)号：US20130039656A1
公开(公告)日：2013-02-14
申请号：US13205055
申请日：2011-08-08
申请人： Cedric F. Lam , Hong Liu
发明人： Cedric F. Lam , Hong Liu
IPC分类号： H04J14/00 , H04J14/02
CPC分类号： H04J14/0282 , H04J14/0232 , H04J14/0235 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0265
摘要： A hybrid passive optical network (“PON”) includes a time-division multiplexing (“TDM”) optical line terminal (“OLT”) and a wavelength-division multiplexing (“WDM”) OLT. The TDM OLT communicates with a first group of customer premises (“CPs”) via TDM signals while the WDM OLT communicates with a second group of CPs via WDM signals. A remote node power splitter is coupled to receive the TDM and WDM signals and broadcast both the TDM signals and the WDM signals on all of its ports facing towards the CPs. Optical filters are disposed between the remote node power splitter and the second group of CPs. Each optical filter is configured to pass a sub-group of the WDM signals while blocking other WDM signals such that each of the second group of CPs receives its own allocation of WDM signals but does not receive WDM signals allocated to other CPs of the second group of CPs.
摘要翻译：混合无源光网络（PON）包括时分复用（TDM）光线路终端（OLT）和波分复用（WDM）OLT。 TDM OLT通过TDM信号与第一组客户端（CP）通信，而WDM OLT经由WDM信号与第二组CPC通信。远程节点功率分配器被耦合以接收TDM和WDM信号，并且在其面向CP的所有端口上广播TDM信号和WDM信号。光学滤波器设置在远程节点功率分配器和第二组CP之间。每个滤光器被配置成通过WDM信号的子组同时阻挡其它WDM信号，使得第二组CP中的每一个接收到其自己的WDM信号分配，但是不接收分配给第二组的其他CP的WDM信号的CP。

9. 发明申请

US20110293279A1 Tunable Multi-Wavelength Optical Transmitter and Transceiver for Optical Communications Based on Wavelength Division Multiplexing 有权
标题翻译：基于波分复用的光通信可调多波长光发射机和收发器
公开(公告)号：US20110293279A1
公开(公告)日：2011-12-01
申请号：US12788204
申请日：2010-05-26
申请人： Cedric F. Lam , Hong Liu
发明人： Cedric F. Lam , Hong Liu
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , H01S5/0265 , H01S5/06256 , H01S5/4031 , H01S5/4087 , H04J14/0279
摘要： Techniques, devices and systems for optical communications based on wavelength division multiplexing (WDM) that use tunable multi-wavelength laser transmitter modules.
摘要翻译：基于使用可调谐多波长激光发射器模块的波分复用（WDM）的光通信技术，设备和系统。

10. 发明授权

US08655167B1 Fiber diagnosis system for point-to-point optical access networks 有权
标题翻译：点对点光接入网络的光纤诊断系统
公开(公告)号：US08655167B1
公开(公告)日：2014-02-18
申请号：US12985041
申请日：2011-01-05
申请人： Cedric F. Lam , James F. Kelly , Austin B. Schuh
发明人： Cedric F. Lam , James F. Kelly , Austin B. Schuh
IPC分类号： H04B10/00
CPC分类号： H04J14/0227 , G01M11/3109 , H04B10/071 , H04J14/0212 , H04Q11/0067 , H04Q2011/0083
摘要： Implementations of techniques and systems are disclosed for detecting a fiber fault in a point-to-point optical access network based on optical time domain reflectometry (“OTDR”) measurements. The techniques include identifying loss of service between a central office (“CO”) and a given optical network unit (“ONU”) of a plurality of ONUs. In response to the identifying the loss of service, configuring a test signal distribution unit to optically couple an OTDR unit to a selected subset of the point-to-point fiber links which includes the given ONU. An optical test signal is launched from the OTDR unit into the selected subset of the point-to-point fiber links via the test signal distribution unit. Test signal reflections are received from each of the point-to-point fiber links within the selected subset as a reflection signature, which is analyzed to identify a location of the fiber fault.
摘要翻译：公开了用于基于光时域反射测量（“OTDR”）测量来检测点对点光接入网络中的光纤故障的技术和系统的实现。这些技术包括识别中心局（“CO”）与多个ONU的给定光网络单元（“ONU”）之间的服务丢失。响应于识别服务丢失，配置测试信号分配单元将OTDR单元光学地耦合到包括给定ONU的点对点光纤链路的选定子集。光测试信号通过测试信号分配单元从OTDR单元发射到点对点光纤链路的所选子集中。从所选择的子集内的每个点对点光纤链路接收测试信号反射作为反射特征，被分析以识别光纤故障的位置。

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