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61. 发明申请

US20090290878A1 Generating an Optical OFDM Signal with Reduced OSNR Requirement 审中-公开
标题翻译：生成具有降低OSNR要求的光OFDM信号
公开(公告)号：US20090290878A1
公开(公告)日：2009-11-26
申请号：US12125507
申请日：2008-05-22
申请人： Jianjun Yu , Ting Wang
发明人： Jianjun Yu , Ting Wang
IPC分类号： H04J14/00 , H04J11/00
CPC分类号： H04L27/2627 , H04B10/505 , H04B10/5165 , H04B10/548 , H04L27/2697
摘要： A method for generating an optical OFDM signal with reduced optical signal to nose ratio requirement includes separating an up-converted OFDM signal into a first part and a second part out of phase with the first part; driving a modulator with the first and second parts of the of the up-converted OFDM signal; and varying a lightwave with the modulator for generating a carrier suppressed OFDM signal having improved receiver sensitivity.
摘要翻译：一种用于产生具有降低的光信噪比要求的光OFDM信号的方法，包括将上转换的OFDM信号分离成与第一部分异相的第一部分和第二部分; 用上变频OFDM信号的第一和第二部分驱动调制器; 以及用所述调制器改变光波以产生具有改善的接收机灵敏度的载波抑制OFDM信号。

62. 发明申请

US20090274462A1 CENTRALIZED LIGHTWAVE WDM-PON EMPLOYING INTENSITY MODULATED DOWSTREAM AND UPSTREAM 有权
标题翻译：集中式照明WDM-PON使用强度调制式水下和上升
公开(公告)号：US20090274462A1
公开(公告)日：2009-11-05
申请号：US12235013
申请日：2008-09-22
申请人： Jianjun Yu
发明人： Jianjun Yu
IPC分类号： H04J14/00
CPC分类号： H04J14/0226 , H04B10/2587 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0282 , H04J2014/0253 , H04L27/2601
摘要： An optical system and method includes a source-free optical network unit coupled to an optical fiber for receiving a centralized lightwave carrier signal with downstream data over the optical fiber. The optical network unit includes a coupler configured to split the original carrier signal into a first path and a second path. The first path includes an optical filter configured to reduce fading effects of the carrier signal. The second path includes a modulator configured to remodulate the centralized lightwave carrier signal with upstream data to produce an upstream data signal for upstream transmission.
摘要翻译：光学系统和方法包括耦合到光纤的无源光网络单元，用于接收具有光纤上的下行数据的集中式光波载波信号。光网络单元包括被配置为将原始载波信号分割为第一路径和第二路径的耦合器。第一路径包括被配置为减少载波信号的衰落影响的滤光器。第二路径包括配置成用上行数据重新调制集中式光波载波信号以产生用于上行传输的上行数据信号的调制器。

63. 发明授权

US07068936B2 Methods and apparatus for optical switching 失效
标题翻译：光开关的方法和装置
公开(公告)号：US07068936B2
公开(公告)日：2006-06-27
申请号：US10161335
申请日：2002-06-03
申请人： Stanley Pau , Jianjun Yu , Keisuke Kojima , Naresh Chand
发明人： Stanley Pau , Jianjun Yu , Keisuke Kojima , Naresh Chand
IPC分类号： H04J14/00
CPC分类号： H04J14/086 , H04J14/02 , H04J14/08 , H04Q11/0005 , H04Q2011/0011 , H04Q2011/0016 , H04Q2011/002 , H04Q2011/0024 , H04Q2011/0033 , H04Q2011/0045
摘要： Methods and apparatus for providing a time slot switch which performs switching in the optical domain without the need for O-E-O conversion is described. The time slot switching device of the present invention may be part of a large switching device capable of performing switching and other function on WDM, TDM and WDM signals which are time division multiplexed. An optical time slot switch implemented using a time slot demultiplexer, optical cross-connect, variable delay lines and time slot multiplexer are described. Frequency conversion may be performed on a per time slot basis in cases where time slot signals are switched between lines using different wavelengths. Wave division demultiplexers and multiplexers can be added to the basic time slot switch to provide support for WDM switching and switching of TDM signals which are transmitted using wave division multiplexing.
摘要翻译：描述了提供在光域中进行切换而不需要O-E-O转换的时隙切换的方法和装置。本发明的时隙切换装置可以是对时分复用的WDM，TDM和WDM信号进行切换等功能的大型交换装置的一部分。描述了使用时隙解复用器，光交叉连接，可变延迟线和时隙多路复用器实现的光时隙交换机。在使用不同波长的线路之间切换时隙信号的情况下，可以在每个时隙的基础上执行频率转换。波分复用器和多路复用器可以添加到基本时隙交换机中，以支持使用波分复用传输的TDM信号的WDM交换和交换。

64. 发明授权

US08781325B2 Methods and systems for coherent multi-subcarrier source generation 有权
标题翻译：相干多子载波源生成的方法和系统
公开(公告)号：US08781325B2
公开(公告)日：2014-07-15
申请号：US13407017
申请日：2012-02-28
申请人： Jianjun Yu
发明人： Jianjun Yu
IPC分类号： H04J14/00 , H04J4/00 , H04B10/04 , H04B10/12 , H04L27/26 , H04L27/20 , H04B10/50 , H04B10/548
CPC分类号： H04L27/2096 , H04B10/5051 , H04B10/548 , H04L27/2637 , H04L27/2697
摘要： A method of generating a multi-subcarrier optical signal is disclosed. A local oscillator oscillates one or more data signals to generate one or more oscillating data signals. A series of modulators phase modulate a lightwave to generate a phase modulated lightwave, wherein the series of modulators are driven by the one or more oscillating data signals. The intensity modulator modulates the phase modulated lightwave, the intensity modulator being driven by one of the oscillating data signals, to generate the multi-subcarrier optical signal.
摘要翻译：公开了一种产生多子载波光信号的方法。本地振荡器振荡一个或多个数据信号以产生一个或多个振荡数据信号。一系列调制器相位调制光波以产生相位调制光波，其中该系列调制器由一个或多个振荡数据信号驱动。强度调制器调制相位调制光波，强度调制器由振荡数据信号之一驱动，以产生多子载波光信号。

65. 发明授权

US08135287B2 100 Gbit/s OFDM optical signal generation 有权
标题翻译： 100 Gbit / s OFDM光信号产生
公开(公告)号：US08135287B2
公开(公告)日：2012-03-13
申请号：US12183381
申请日：2008-07-31
申请人： Jianjun Yu , Ting Wang
发明人： Jianjun Yu , Ting Wang
IPC分类号： H04B10/04 , H04B10/12
CPC分类号： H04J14/06 , H04B10/5165 , H04B10/532 , H04B10/548 , H04J14/002 , H04L5/0014 , H04L27/2627 , H04L27/2697
摘要： A method includes modulating lightwaves to provide first and second OFDM signal sidebands at a first polarization direction and first and second OFDM signal sidebands at a second polarization direction, and combining sidebands that are oppositely positioned and joined from the first and second OFDM signal sidebands at each polarization direction to provide a polarization multiplexing OFDM signal.
摘要翻译：一种方法包括调制光波以在第一偏振方向提供第一和第二OFDM信号边带，以及在第二极化方向上提供第一和第二OFDM信号边带，并且组合在每一个处与第一和第二OFDM信号边带相对地定位和连接的边带偏振方向，以提供偏振复用OFDM信号。

66. 发明申请

US20110286746A1 Transponder Aggregator Without Wavelength Selector for Colorless and Directionless Multi-Degree ROADM Node 审中-公开
标题翻译：没有波长选择器的无应答器聚合器，用于无色无方向多度ROADM节点
公开(公告)号：US20110286746A1
公开(公告)日：2011-11-24
申请号：US12900220
申请日：2010-10-07
申请人： Philip Nan Ji , Yoshiaki Aono , Jianjun Yu , Ting Wang , Tsutomu Tajima , Makoto Shibutani
发明人： Philip Nan Ji , Yoshiaki Aono , Jianjun Yu , Ting Wang , Tsutomu Tajima , Makoto Shibutani
IPC分类号： H04J14/02
CPC分类号： H04J14/0217 , H04J14/0204 , H04J14/0205 , H04J14/021 , H04J14/0212 , H04J14/0219
摘要： A method for transponder optical channel selection of optical signals from a transponder aggregator includes choosing wavelength division multiplexing channels to be dropped from a transponder aggregator receiving optical input signals, splitting all dropped wavelength division multiplexing channels into at least one transponder having a coherent receiver and transmitter, and tuning a local oscillator laser of the coherent receiver to a wavelength of one of the all dropped wavelength division multiplexing channels for selecting one of the all dropped wavelength division multiplexing channels.
摘要翻译：一种用于从应答器聚合器的光信号的应答器光信道选择的方法包括从接收光输入信号的转发器聚合器中选择要丢弃的波分复用信道，将所有丢弃的波分复用信道分解成具有相干接收机和发射机的至少一个应答器，并将相干接收机的本地振荡器激光器调谐到所有下降的波分复用信道中的一个的波长，以选择所有丢弃的波分复用信道之一。

67. 发明授权

US08064775B2 Generation of at least 100 Gbit/s optical transmission 有权
标题翻译：产生至少100Gbit / s的光传输
公开(公告)号：US08064775B2
公开(公告)日：2011-11-22
申请号：US12183368
申请日：2008-07-31
申请人： Jianjun Yu , Lei Xu , Philip Ji , Ting Wang , Dayou Qian , Yutaka Yano
发明人： Jianjun Yu , Lei Xu , Philip Ji , Ting Wang , Dayou Qian , Yutaka Yano
IPC分类号： H04B10/04 , H04B10/12
CPC分类号： H04B10/5165 , H04B10/54 , H04B10/548 , H04L27/2601
摘要： A method includes generating at least two lightwave carriers from a lightwave source, the carriers having a wavelength spacing, creating an up-subchannel and a down-subchannel orthogonal to one another and spaced apart based on the fixed wavelength spacing from modulations of the lightwave carriers according to respective up-converted OFDM signals that are carrier suppressed, and combining one lightwave from the up-subchannel and one lightwave from the down-subchannel into an optical channel for transmission over an optical fiber.
摘要翻译：一种方法包括从光波源产生至少两个光波载波，所述载波具有波长间隔，产生基于与光波载波调制的固定波长间隔彼此正交并且间隔开的向上子信道和下信道根据载波抑制的各自的上变换的OFDM信号，并将来自上信道的一个光波和来自下信道的一个光波组合成光信道以在光纤上传输。

68. 发明申请

US20110075764A1 FULL RANGE OFFSET CORRECTION FOR COHERENT OPTICAL OFDM SYSTEMS 有权
标题翻译：用于相邻光学OFDM系统的全范围偏差校正
公开(公告)号：US20110075764A1
公开(公告)日：2011-03-31
申请号：US12841458
申请日：2010-07-22
申请人： Shu-Hao Fan , Jianjun Yu
发明人： Shu-Hao Fan , Jianjun Yu
IPC分类号： H04L7/00 , H04L27/00
CPC分类号： H04L27/2657 , H04L27/2613 , H04L27/2675 , H04L27/2697 , H04L2027/003
摘要： A method includes synchronizing a received signal with at least two orthogonal frequency division multiplexed OFDM training signals having only in-phase values and being real in the time domain and determining a frequency offset correction from the synchronization of the received signal and training symbols responsive to a cross-correlation between said training symbols to enable estimating all possible frequency offsets for correction for enabling OFDM demodulation of said received signal.
摘要翻译：一种方法包括使接收的信号与仅具有同相位值的至少两个正交频分多路复用OFDM训练信号同步并且在时域中为实数，并且响应于一个接收信号和训练符号从接收信号的同步和训练符号确定频率偏移校正所述训练符号之间的互相关，以便能够估计用于所述接收信号的OFDM解调的校正的所有可能的频率偏移。

69. 发明申请

US20080279556A1 Wavelength Division Multiplexed Passive Optical Network 有权
标题翻译：波分复用无源光网络
公开(公告)号：US20080279556A1
公开(公告)日：2008-11-13
申请号：US12115046
申请日：2008-05-05
申请人： Jianjun Yu , Yuanqiu Luo , Junqiang Hu , Ting Wang
发明人： Jianjun Yu , Yuanqiu Luo , Junqiang Hu , Ting Wang
IPC分类号： H04J14/02
CPC分类号： H04B10/2587 , H04J14/0282
摘要： Data is transmitted between a central office and customer premises by a wavelength division multiplex passive optical network. Two laser beams with separate wavelengths are transmitted from the central office to an optical network unit in the customer premises. Both laser beams carry downstream data. One laser beam is intensity modulated by on/off keying. The other laser beam is phase modulated by differential phase shift keying, which maintains a constant optical intensity. The first laser beam is received by a first optical receiver, which demodulates the first downstream data. The second laser beam is split in two. One laser beam is sent to a second optical receiver, which demodulates the second downstream data. The other laser beam is sent to a reflective semiconductor amplifier, which modulates the beam with upstream data and transmits the beam back to a receiver in the central optical system.
摘要翻译：数据通过波分复用无源光网络在中心局和客户驻地之间传输。具有分离波长的两个激光束从中心局传输到客户驻地的光网络单元。两个激光束都携带下行数据。一个激光束通过开/关键控进行强度调制。其他激光束通过差分相移键控进行相位调制，保持恒定的光强度。第一激光束由第一光接收器接收，第一光接收器解调第一下行数据。第二激光束分为两部分。一个激光束被发送到第二光接收器，其解调第二下行数据。另一个激光束被发送到反射半导体放大器，该反射半导体放大器利用上行数据对光束进行调制，并将光束传送回中央光学系统中的接收器。

70. 发明申请

US20080063396A1 Optical Subchannels From a Single Lightwave Source 审中-公开
标题翻译：来自单个光波源的光学子信道
公开(公告)号：US20080063396A1
公开(公告)日：2008-03-13
申请号：US11690926
申请日：2007-03-26
申请人： Jianjun Yu , Lei Xu , Philip Nan Ji , Ting Wang
发明人： Jianjun Yu , Lei Xu , Philip Nan Ji , Ting Wang
IPC分类号： H04B10/24
CPC分类号： H04B10/5561 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/5162 , H04B10/5165
摘要： An apparatus includes a generator for obtaining at least two lightwave carriers from a single lightwave source, at least two modulators for selectively varying the lightwave carriers according to respective data signals; and a coupler for combining the modulated lightwave carriers for optical transmission. The generator can be one of an optical carrier suppression or phase modulation. The apparatus can employ a filter for separating the lightwave carriers by a fixed wavelength spacing before selectively varying the lightwave carriers according to the respective data signals. In an exemplary embodiment of the invention, the respective data signals are two 50 Gbit/s differential quadrature phase key DQPSK signals, each 50 Gbit/s DQPSK signal including a first 25 Gbit/s data signal out of phase with a second 25 Gbit/s data signal for selectively varying a respective one of the two lightwave carriers, and the combined modulated lightwave carriers are a 100 Gbit/s DQPSK signal. Preferably, the apparatus includes a modulator for pulse shaping the lightwave carriers.
摘要翻译：一种装置包括用于从单个光波源获得至少两个光波载波的发生器，至少两个用于根据相应数据信号选择性地改变光波载波的调制器; 以及用于组合用于光传输的调制光波载波的耦合器。发生器可以是光载波抑制或相位调制之一。根据相应的数据信号，在选择性地改变光波载波之前，该装置可以采用用于将光波载波分离固定波长间隔的滤波器。在本发明的示例性实施例中，相应的数据信号是两个50Gbit / s的差分正交相位键DQPSK信号，每个50Gbit / s的DQPSK信号包括与第二25Gbit / s的第二25Gbit / s数据信号异相，用于选择性地改变两个光波载波中的相应一个的数据信号，并且组合的调制的光波载波是100Gbit / s的DQPSK信号。优选地，该装置包括用于对光波载波进行脉冲整形的调制器。

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