公开(公告)号：US20080124075A1

公开(公告)日：2008-05-29

申请号：US11985777

申请日：2007-11-16

申请人： Xiaogeng Xu ,  Chan Zhao

发明人： Xiaogeng Xu ,  Chan Zhao

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04J3/0682 ,  H04Q11/0067 ,  H04Q2011/0079

摘要： A ranging method and system for passive optical network, and an optical network unit are provided. The ranging method includes: sending an initial ranging signal to a splitter loop-back device and recording a current sending time as a first time; receiving a loop-back ranging signal from the splitter loop-back device, and determining whether the loop-back ranging signal is a return signal of the initial ranging signal; if the loop-back ranging signal is a return signal of the initial ranging signal, recording a current receiving time as a second time; and obtaining ranging information by calculating a difference between the first time and the second time, and performing a ranging on the basis of the ranging information.

摘要翻译： 提供无源光网络的测距方法和系统，以及光网络单元。 测距方法包括：将初始测距信号发送到分离器环回设备并且首次记录当前发送时间; 从所述分离器环回设备接收环回测距信号，以及确定所述环回测距信号是否是所述初始测距信号的返回信号; 如果环回测距信号是初始测距信号的返回信号，则记录当前接收时间作为第二次; 以及通过计算第一时间和第二时间之间的差异来获得测距信息，并且基于测距信息执行测距。

公开(公告)号：US07925157B2

公开(公告)日：2011-04-12

申请号：US11985777

申请日：2007-11-16

申请人： Xiaogeng Xu ,  Chan Zhao

发明人： Xiaogeng Xu ,  Chan Zhao

IPC分类号： G02B6/28 ,  H04J14/08 ,  H04J14/00 ,  H04B10/06 ,  H04B10/20 ,  H04Q11/02 ,  H04L12/66

CPC分类号： H04J3/0682 ,  H04Q11/0067 ,  H04Q2011/0079

摘要： A ranging method and system for passive optical network, and an optical network unit are provided. The ranging method includes: sending an initial ranging signal to a splitter loop-back device and recording a current sending time as a first time; receiving a loop-back ranging signal from the splitter loop-back device, and determining whether the loop-back ranging signal is a return signal of the initial ranging signal; if the loop-back ranging signal is a return signal of the initial ranging signal, recording a current receiving time as a second time; and obtaining ranging information by calculating a difference between the first time and the second time, and performing a ranging on the basis of the ranging information.

摘要翻译： 提供无源光网络的测距方法和系统，以及光网络单元。 测距方法包括：将初始测距信号发送到分离器环回设备并且首次记录当前发送时间; 从所述分离器环回设备接收环回测距信号，以及确定所述环回测距信号是否是所述初始测距信号的返回信号; 如果环回测距信号是初始测距信号的返回信号，则记录当前接收时间作为第二次; 以及通过计算第一时间和第二时间之间的差异来获得测距信息，并且基于测距信息执行测距。

公开(公告)号：US08687979B2

公开(公告)日：2014-04-01

申请号：US13272896

申请日：2011-10-13

申请人： Xiaogeng Xu ,  Lei Liu

发明人： Xiaogeng Xu ,  Lei Liu

IPC分类号： H04B10/50

CPC分类号： H04B10/532 ,  H04B10/5561 ,  H04B10/67

摘要： In the field of communications transmission, a method, a device, and a system for generating and receiving a phase polarization modulated signal are disclosed. The device for generating the phase polarization modulated signal includes: a Laser Diode (LD), a time division demultiplexer, a phase precoding module, a phase modulating module, a polarization precoding module and a polarization modulating module. The device for receiving the phase polarization modulated signal includes: an optical splitter, a polarizer, a phase demodulating and receiving unit, a Polarization Beam Splitter (PBS), a balanced receiver, a power divider, an exclusive OR, a delayer and a data interface processing unit. Therefore, problems in the prior art that a Differential Quadrature Phase Shift Keying (DQPSK) signal cannot bear and transmit information at a higher rate and that non-linear effect is strong during transmission are solved, and transmission performance of an optical signal is improved.

摘要翻译： 在通信传输领域中，公开了一种用于产生和接收相位偏振调制信号的方法，装置和系统。 用于产生相位偏振调制信号的装置包括：激光二极管（LD），时分解复用器，相位预编码模块，相位调制模块，偏振预编码模块和偏振调制模块。 用于接收相位偏振调制信号的装置包括：分光器，偏振器，相位解调和接收单元，偏振光束分离器（PBS），平衡接收器，功率分配器，异或，延迟器和数据 接口处理单元。 因此，解决了现有技术中差分正交相移键控（DQPSK）信号不能以较高速率承载和发送信息并且在传输期间非线性效应强的问题，并且提高了光信号的传输性能。

公开(公告)号：US20120027410A1

公开(公告)日：2012-02-02

申请号：US13272896

申请日：2011-10-13

申请人： Xiaogeng Xu ,  Lei Liu

发明人： Xiaogeng Xu ,  Lei Liu

IPC分类号： H04J14/08

CPC分类号： H04B10/532 ,  H04B10/5561 ,  H04B10/67

摘要： In the field of communications transmission, a method, a device, and a system for generating and receiving a phase polarization modulated signal are disclosed. The device for generating the phase polarization modulated signal includes: a Laser Diode (LD), a time division demultiplexer, a phase precoding module, a phase modulating module, a polarization precoding module and a polarization modulating module. The device for receiving the phase polarization modulated signal includes: an optical splitter, a polarizer, a phase demodulating and receiving unit, a Polarization Beam Splitter (PBS), a balanced receiver, a power divider, an exclusive OR, a delayer and a data interface processing unit. Therefore, problems in the prior art that a Differential Quadrature Phase Shift Keying (DQPSK) signal cannot bear and transmit information at a higher rate and that non-linear effect is strong during transmission are solved, and transmission performance of an optical signal is improved.

摘要翻译： 在通信传输领域中，公开了一种用于产生和接收相位偏振调制信号的方法，装置和系统。 用于产生相位偏振调制信号的装置包括：激光二极管（LD），时分解复用器，相位预编码模块，相位调制模块，偏振预编码模块和偏振调制模块。 用于接收相位偏振调制信号的装置包括：分光器，偏振器，相位解调和接收单元，偏振光束分离器（PBS），平衡接收器，功率分配器，异或，延迟器和数据 接口处理单元。 因此，解决了现有技术中差分正交相移键控（DQPSK）信号不能以较高速率承载和发送信息并且在传输期间非线性效应强的问题，并且提高了光信号的传输性能。

公开(公告)号：US08861959B2

公开(公告)日：2014-10-14

申请号：US13453696

申请日：2012-04-23

申请人： Dafeng Tian ,  Zhiyu Xiao ,  Xiaogeng Xu

发明人： Dafeng Tian ,  Zhiyu Xiao ,  Xiaogeng Xu

IPC分类号： H04J14/08 ,  H04B10/04 ,  H04B10/12 ,  H04B10/06 ,  H04B10/077 ,  H04B10/556 ,  H04B10/69 ,  H04B10/67 ,  H04B10/532 ,  H04J14/06 ,  H04J14/02

CPC分类号： H04J14/06 ,  H04B10/0779 ,  H04B10/532 ,  H04B10/5561 ,  H04B10/671 ,  H04B10/69 ,  H04J14/0276

摘要： The present invention discloses a receiving apparatus, a sending apparatus, a system and a method for optical polarization division multiplexing. The receiving apparatus includes: an optical splitter, configured to: split a received polarization-multiplexed optical signal into two identical polarization-multiplexed optical signals, where the two polarization-multiplexed optical signals both include a first State Of Polarization (SOP) optical signal and a second SOP optical signal, and the first SOP optical signal is an optical signal when a horizontal-SOP optical signal is transmitted to the optical splitter, and the second SOP optical signal is an optical signal when a vertical-SOP optical signal is transmitted to the optical splitter; a horizontal optical signal obtaining apparatus, connected to the optical splitter and configured to separate the horizontal-SOP optical signal; and a vertical optical signal obtaining apparatus, connected to the optical splitter and configured to separate the vertical-SOP optical signal.

摘要翻译： 本发明公开了一种用于光偏振分割复用的接收装置，发送装置，系统和方法。 接收装置包括：光分路器，被配置为：将接收到的偏振复用光信号分成两个相同的偏振复用光信号，其中两个偏振复用光信号都包括第一偏振态（SOP）光信号和 第二SOP光信号，并且第一SOP光信号是当水平SOP光信号被发送到分光器时的光信号，并且当垂直SOP光信号被发送到第二SOP光信号时，第二SOP光信号是光信号 光分路器; 水平光信号获取装置，连接到光分路器，并被配置为分离水平SOP光信号; 以及垂直光信号获取装置，连接到光分路器并且被配置为分离垂直SOP光信号。

公开(公告)号：US08238747B2

公开(公告)日：2012-08-07

申请号：US12628517

申请日：2009-12-01

申请人： Xiaogeng Xu ,  Chao Lv

发明人： Xiaogeng Xu ,  Chao Lv

IPC分类号： H04J14/06 ,  H04B10/04 ,  H04B10/12

CPC分类号： H04B10/5561 ,  G02F2001/212 ,  H04B10/5053 ,  H04B10/532 ,  H04J14/06 ,  H04L27/34

摘要： A method and an apparatus for generating a differential quadrature phase shift keying (DQPSK) code optical signal are provided. The method may includes splitting an optical signal to obtain two polarized optical signals, modulating and phase-shifting one of the two polarized optical signals to obtain a phase-shifted and polarized optical signal, and modulating the other of the two polarized optical signals to obtain another polarized and modulated optical signal. The phase-shifted and polarized optical signal may be combined with the other polarized and modulated optical signal to obtain a polarization multiplexed optical signal. The method may further include, polarizing the polarization multiplexed optical signal to obtain the DQPSK code optical signal. The apparatus may include a polarization beam splitter (PBS), modulators, a phase-shift controller, a polarization beam combiner (PBC), and a polarizer. Through the processes of beam splitting, modulation, phase-shifting, beam combination, and polarization, the DQPSK code optical signal can be generated stably.

摘要翻译： 提供了一种用于产生差分正交相移键控（DQPSK）码光信号的方法和装置。 该方法可以包括分离光信号以获得两个偏振光信号，调制和相移两个偏振光信号之一以获得相移偏振光信号，并调制两个偏振光信号中的另一个以获得 另一个偏振和调制光信号。 相移和偏振光信号可以与另一个偏振和调制的光信号组合以获得偏振复用光信号。 该方法还可以包括：使偏振复用光信号偏振以获得DQPSK码光信号。 该装置可以包括偏振分束器（PBS），调制器​​，相移控制器，偏振束组合器（PBC）和偏振器。 通过分束，调制，相移，光束组合和偏振的过程，可以稳定地生成DQPSK码光信号。

公开(公告)号：US08457494B2

公开(公告)日：2013-06-04

申请号：US12503476

申请日：2009-07-15

申请人： Xiaogeng Xu ,  Jianlin Zhou

发明人： Xiaogeng Xu ,  Jianlin Zhou

IPC分类号： H04J14/00

CPC分类号： H04L12/2861 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0079 ,  H04Q2011/0088

摘要： A Passive Optical Network (PON) multicast management method includes: an Optical Line Terminal (OLT) performs multicast control according to multicast control information, and generates a corresponding multicast downstream command; the OLT sends the multicast downstream command to an Optical Network Unit (ONU); and the ONU resolves the multicast downstream command, and performs multicast control according to the multicast downstream command. Accordingly, a PON multicast communication system, an OLT, and an ONU are disclosed. Through the multicast control mechanism introduced into the PON system, the PON multicast functions are enhanced, and the same data destined for multiple ONUs is prevented from being sent repeatedly in the network, and thus the network bandwidth resources are saved.

摘要翻译： 无源光网络（PON）组播管理方法包括：光线路终端（OLT）根据组播控制信息进行组播控制，生成相应的组播下行命令; OLT将组播下行命令发送给光网络单元（ONU）; ONU解析组播下行命令，根据组播下行命令进行组播控制。 因此，公开了PON组播通信系统，OLT和ONU。 通过引入PON系统的组播控制机制，增强了PON组播功能，防止在多个ONU上重复发送相同的数据，从而节省了网络带宽资源。

公开(公告)号：US20090274461A1

公开(公告)日：2009-11-05

申请号：US12503476

申请日：2009-07-15

申请人： Xiaogeng Xu ,  Jianlin Zhou

发明人： Xiaogeng Xu ,  Jianlin Zhou

IPC分类号： H04J14/00

CPC分类号： H04L12/2861 ,  H04J3/1694 ,  H04Q11/0067 ,  H04Q2011/0079 ,  H04Q2011/0088

摘要： A Passive Optical Network (PON) multicast management method includes: an Optical Line Terminal (OLT) performs multicast control according to multicast control information, and generates a corresponding multicast downstream command; the OLT sends the multicast downstream command to an Optical Network Unit (ONU); and the ONU resolves the multicast downstream command, and performs multicast control according to the multicast downstream command. Accordingly, a PON multicast communication system, an OLT, and an ONU are disclosed. Through the multicast control mechanism introduced into the PON system, the PON multicast functions are enhanced, and the same data destined for multiple ONUs is prevented from being sent repeatedly in the network, and thus the network bandwidth resources are saved.

摘要翻译： 无源光网络（PON）组播管理方法包括：光线路终端（OLT）根据组播控制信息进行组播控制，生成相应的组播下行命令; OLT将组播下行命令发送给光网络单元（ONU）; ONU解析组播下行命令，根据组播下行命令进行组播控制。 因此，公开了PON组播通信系统，OLT和ONU。 通过引入PON系统的组播控制机制，增强了PON组播功能，防止在多个ONU上重复发送相同的数据，从而节省了网络带宽资源。