专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明申请

US20090252497A1 Method and apparatus for compensating for polarization mode dispersion (PMD) 有权
标题翻译：用于补偿偏振模色散（PMD）的方法和装置
公开(公告)号：US20090252497A1
公开(公告)日：2009-10-08
申请号：US12082091
申请日：2008-04-08
申请人： Richard C. Younce , Julia Y. Larikova
发明人： Richard C. Younce , Julia Y. Larikova
IPC分类号： H04J14/02
CPC分类号： H04B10/2569 , H04B10/07953 , H04B10/6162
摘要： Current optical networks are engineered to handle amplifier noise and chromatic dispersion. Polarization mode dispersion occurs in optical networks due splitting of the light energy of a pulse propagating in a fiber into two modes. Compensating for polarization mode dispersion is a difficult and expensive task and hence only few commercial systems have been deployed to deal with this issue. A polarization mode dispersion compensation module according to an example embodiment of the present invention compensates for polarization mode dispersion by determining a performance metric related to an error rate of an optical signal in at least one polarization mode in a filtered state. Based on the performance metric, a control vector is determined to control the optical signal in the at least one polarization mode in the filtered state. The control vector is then applied to a polarization effecting device to compensate for polarization mode dispersion.
摘要翻译：目前的光网络被设计为处理放大器噪声和色散。由于将在光纤中传播的脉冲的光能分裂成两种模式，在光网络中发生极化模式色散。补偿偏振模色散是一项艰巨和昂贵的任务，因此只有少数商业系统被部署来处理这个问题。根据本发明的示例性实施例的偏振模色散补偿模块通过在滤波状态下确定与至少一个偏振模式中的光信号的误码率相关的性能度量来补偿偏振模色散。基于性能度量，确定控制矢量以控制处于过滤状态的至少一个偏振模式中的光信号。然后将控制矢量应用于偏振效应装置以补偿偏振模色散。

82. 发明申请

US20090238563A1 Optical Signal Transmission Apparatus 有权
标题翻译：光信号传输设备
公开(公告)号：US20090238563A1
公开(公告)日：2009-09-24
申请号：US12339133
申请日：2008-12-19
申请人： Yasuyuki FUKASHIRO , Eita Miyasaka
发明人： Yasuyuki FUKASHIRO , Eita Miyasaka
IPC分类号： H04B10/08
CPC分类号： H04B10/0775 , H04B10/07953 , H04B2210/078 , H04B2210/252
摘要： There is provided an optical signal transmission apparatus having a stable dispersion compensation function without unnecessarily controlling a compensation value even when a main signal quality is deteriorated due to a factor other than dispersion or in the case of a transmission failure. When it is determined that a signal quality is deteriorated due to dispersion of a fiber by determining a control mode of a variable dispersion compensator by means of optical noise information and received power information in addition to bit error information of a received signal, a compensation value of the variable dispersion compensator is varied and a compensation value other than the dispersion of the optical fiber is held to an existing set value.
摘要翻译：提供了一种具有稳定的色散补偿功能的光信号传输装置，即使当主信号质量因分散以外的因素而劣化时或在传输失败的情况下，也不必不必要地控制补偿值。当通过除接收信号的位错误信息之外的光噪声信息和接收功率信息确定可变色散补偿器的控制模式来确定信号质量由于光纤的色散而劣化时，补偿值并且将除了光纤的色散之外的补偿值保持在现有的设定值。

83. 发明申请

US20090214212A1 METHOD AND DEVICE FOR CHANNEL-ADAPTED SIGNAL TRANSMISSION IN OPTICAL NETWORKS 有权
标题翻译：用于光网络中信道适配信号传输的方法和装置
公开(公告)号：US20090214212A1
公开(公告)日：2009-08-27
申请号：US12097358
申请日：2006-12-08
申请人： Sascha Vorbeck , Ralph Leppla , Malte Schneiders , Matthias Gunkel , Werner Weiershausen
发明人： Sascha Vorbeck , Ralph Leppla , Malte Schneiders , Matthias Gunkel , Werner Weiershausen
IPC分类号： H04J14/02
CPC分类号： H04J14/02 , H04B10/077 , H04B10/07953 , H04B10/07955 , H04J14/0221
摘要： A method for optical data transmission in a wavelength multiplexing system having at least two transmission channels of different wavelengths includes determining at least one value which is a measure of a physical property of an optical data transmission path of the wavelength multiplexing system; and automatically adjusting a transmission parameter of at least one of the transmission channels as a function of the determined at least one value.
摘要翻译：一种具有不同波长的至少两个传输信道的波分复用系统中的光数据传输方法包括：确定至少一个值，该值是所述波长复用系统的光数据传输路径的物理属性的量度; 以及根据确定的至少一个值自动调整至少一个传输信道的传输参数。

84. 发明申请

US20090080882A1 Method And Apparatus For In-Band OSNR Monitoring 有权
标题翻译：用于带内OSNR监测的方法和装置
公开(公告)号：US20090080882A1
公开(公告)日：2009-03-26
申请号：US12236495
申请日：2008-09-23
申请人： Michael Cahill
发明人： Michael Cahill
IPC分类号： H04B10/08 , G02F2/00
CPC分类号： H04B10/07953
摘要： An optical signal-to-noise ratio monitor includes a demodulator comprising an input that receives at least a portion of a phase modulated optical signal. The monitor also includes a delay interferometer with a periodic phase control that sweeps a differential delay of one arm of the interferometer through a plurality of differential optical phase shifts. The demodulator converts phase modulated optical signals to intensity modulated optical signals. A tunable optical filter continuously scans a transmission wavelength over a desired wavelength range in a time that allows more than one wavelength to be transmitted through an output of the tunable filter for each of the plurality of differential optical phase shifts. An optical detector detects the filtered optical signal and generates a corresponding electrical demodulation signal at an output. A processor determines an optical signal-to-noise ratio for the more than one wavelength of the optical signal.
摘要翻译：光信噪比监视器包括解调器，该解调器包括接收相位调制光信号的至少一部分的输入。监视器还包括具有周期性相位控制的延迟干涉仪，其通过多个差分光学相移扫描干涉仪的一个臂的差分延迟。解调器将相位调制光信号转换为强度调制光信号。可调谐光学滤波器在允许多于一个波长通过可调谐滤波器的输出传输多个差分光学相移中的每一个的时间内在期望波长范围内连续地扫描透射波长。光检测器检测滤波后的光信号，并在输出端产生相应的电解调信号。处理器确定光信号的多于一个波长的光信噪比。

85. 发明授权

US07457032B2 Arrangement, system, and method for accurate power measurements using an optical performance monitor (OPM) 有权
标题翻译：使用光学性能监视器（OPM）进行精确功率测量的布置，系统和方法
公开(公告)号：US07457032B2
公开(公告)日：2008-11-25
申请号：US11231874
申请日：2005-09-22
申请人： Lijie Qiao , Paul J. Vella
发明人： Lijie Qiao , Paul J. Vella
IPC分类号： H04B10/08 , H04B10/17
CPC分类号： H04B10/07955 , H04B10/07953
摘要： An arrangement has a WDT (Wavelength-Dependent Tap) coupled in an OCS (Optical Communication System) and an OPM (Optical Performance Monitoring) function coupled to the WDT. The WDT is adapted to receive from the OCS an input optical signal having noise and channels at respective channel wavelengths. The WDT couples to an output some of the input optical signal at the channel wavelengths and most of a noise power at wavelengths between the channel wavelengths, and couples a remaining portion of the input optical signal back into the optical communication system. The optical performance monitoring function determines a power characteristic of the input optical signal as a function of a power from the output. The power characteristic may be an OSNR (Optical Signal-to-Noise Ratio) determined as a function of a signal power and a noise power of the output optical signal.
摘要翻译：一种布置具有耦合到OCS（光通信系统）中的WDT（波长相关抽头）和耦合到WDT的OPM（光学性能监视）功能。 WDT适于从OCS接收具有各个信道波长的噪声和信道的输入光信号。 WDT在通道波长处的输出光信号中输出一些输入光信号，并且在通道波长之间波长处的噪声功率的大部分耦合，并将输入光信号的剩余部分耦合回光通信系统。光学性能监视功能根据输出的功率确定输入光信号的功率特性。功率特性可以是根据信号功率和输出光信号的噪声功率确定的OSNR（光信噪比）。

86. 发明授权

US07447424B2 Optical communication systems and methods of operating such optical communication systems 有权
标题翻译：光通信系统和操作这种光通信系统的方法
公开(公告)号：US07447424B2
公开(公告)日：2008-11-04
申请号：US11266310
申请日：2005-11-04
申请人： Karen Hovakimyan , Danzhu Wu
发明人： Karen Hovakimyan , Danzhu Wu
IPC分类号： H04B10/00 , H04B10/08
CPC分类号： H04J14/029 , H04B10/032 , H04B10/07953 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0279 , H04Q11/0062 , H04Q2011/0081
摘要： An optical communication system includes a first optical device including a transmission optical switch and a controller coupled to the transmission optical switch, and a second optical device coupled to the first optical device via each of a first fiber and a second fiber. The transmission optical switch is configured to operate in one of a first mode associated with the first fiber and a second mode associated with the second fiber based on control signals generated by the controller. Moreover, the controller is configured to perform a non-revertive switching operation on the transmission optical switch based on the satisfaction or the non-satisfaction of a predetermined condition or a plurality of predetermined conditions.
摘要翻译：光通信系统包括第一光学装置，其包括传输光开关和连接到传输光开关的控制器，以及通过第一光纤和第二光纤中的每一个耦合到第一光学装置的第二光学装置。传输光开关被配置为基于由控制器产生的控制信号，以与第一光纤相关联的第一模式和与第二光纤相关联的第二模式中的一个操作。此外，控制器被配置为基于满足或不满足预定条件或多个预定条件在传输光学开关上执行不可逆切换操作。

87. 发明授权

US07440170B2 Method and apparatus for monitoring optical signal-to-noise ratio 有权
标题翻译：用于监测光信噪比的方法和装置
公开(公告)号：US07440170B2
公开(公告)日：2008-10-21
申请号：US11426035
申请日：2006-06-23
申请人： Yuan-Hua Kao , Xiang Liu
发明人： Yuan-Hua Kao , Xiang Liu
IPC分类号： G02B5/13 , H04B10/08
CPC分类号： H04B10/07953
摘要： Optical signal-to-noise ratio (OSNR) monitoring methods and apparatus are described. A tunable optical filter filters an optical channel containing an optical signal and noise. The total signal and noise power at the output of the filter is measured as the transmittance passband of the filter is varied and the maximum and minimum powers are determined. The ratio between the maximum and minimum powers is then used to determine the OSNR of the optical channel, which, for example, can be a wavelength channel in a wavelength division multiplexing (WDM) system. The ratio of the maximum signal power to the minimum signal power and the ratio of the maximum noise power to the minimum noise power are pre-determined based on the signal modulation format type and filter passband characteristics. Because the OSNR monitoring method and apparatus rely on information obtained after spectrally filtering the signal and noise, their operation is independent of any transmission effect that does not affect the optical power spectra of the signal and the noise or affects them in a known manner. For example, effects such as chromatic dispersion (CD), polarization-mode dispersion (PMD), and changes in the signal degree of polarization (DOP) and noise DOP will not affect the OSNR reading thus obtained.
摘要翻译：描述了光信噪比（OSNR）监测方法和装置。可调光滤波器对包含光信号和噪声的光通道进行滤波。滤波器输出端的总信号和噪声功率在滤波器的透射率通过频带发生变化并确定最大和最小功率时进行测量。然后，使用最大和最小功率之间的比率来确定光通道的OSNR，其例如可以是波分复用（WDM）系统中的波长信道。基于信号调制格式类型和滤波器通带特性，预先确定最大信号功率与最小信号功率的比率以及最大噪声功率与最小噪声功率的比率。由于OSNR监视方法和装置依赖于在对信号和噪声进行频谱滤波之后获得的信息，所以它们的操作与不影响信号的光功率谱和噪声的任何传输效应无关，或以已知的方式影响它们。例如，诸如色散（CD），偏振模色散（PMD）和信号偏振度（DOP）和噪声DOP的变化的影响将不会影响如此获得的OSNR读数。

88. 发明申请

US20080253762A1 Method and system for performance monitor for digital optical DWDM networks 有权
标题翻译：数字光纤DWDM网络性能监测方法及系统
公开(公告)号：US20080253762A1
公开(公告)日：2008-10-16
申请号：US11953828
申请日：2007-12-10
申请人： Yu Sheng Bai , Xiao Andy Shen
发明人： Yu Sheng Bai , Xiao Andy Shen
IPC分类号： H04B10/08 , H04B17/00
CPC分类号： H04B10/07953 , H04J14/021 , H04J14/0283 , H04J14/0295 , H04L1/0045 , H04L1/20 , H04Q11/0062 , H04Q2011/0081 , H04Q2011/0083 , H04Q2011/0092
摘要： A system for performance monitoring for a DWDM network. The system includes a photonic integrated device configured to receive an optical signal and output a first plurality of electrical signals for a plurality of channels respectively. The system also includes a clock and data recovery device configured to receive the first plurality of electric signals. Additionally, the system includes a switch device coupled to the first clock and data recovery device without an error correction device in between. The switch includes a first interface to output a second plurality of electrical signals and a second interface to add or drop one or more channel devices. The switch also includes an output port configured to provide information associated with the plurality of channels. An error detection device is coupled to the output port and is configured to monitor and report performance of the channels.
摘要翻译：用于DWDM网络的性能监视系统。该系统包括被配置为接收光信号并分别输出多个信道的第一多个电信号的光子集成器件。该系统还包括被配置为接收第一多个电信号的时钟和数据恢复装置。此外，该系统包括耦合到第一时钟和数据恢复装置的开关装置，其间没有纠错装置。该开关包括用于输出第二多个电信号的第一接口和用于添加或丢弃一个或多个信道设备的第二接口。交换机还包括被配置为提供与多个信道相关联的信息的输出端口。错误检测装置耦合到输出端口并被配置为监视和报告信道的性能。

89. 发明申请

US20080222493A1 METHOD AND SYSTEM FOR CONTROL LOOP RESPONSE TIME OPTIMIZATION 审中-公开
标题翻译：控制环路响应时间优化的方法与系统
公开(公告)号：US20080222493A1
公开(公告)日：2008-09-11
申请号：US12125276
申请日：2008-05-22
申请人： Nikolai Fediakine , Shinkyo Kaku , Vitali Tikhonov
发明人： Nikolai Fediakine , Shinkyo Kaku , Vitali Tikhonov
IPC分类号： H03M13/00
CPC分类号： H04B10/07953 , H04L1/0047 , H04L1/203
摘要： A method and system for optimizing a response time of a monitoring loop with forward error correction. Characteristics of a fiber optic communications channel are adjusted based on the number of errors corrected in the FEC decoder. An adaptive BER is calculated much faster by using a signal from an FEC decoder, than by comparing input and output transmission. Thereby, the lag time in adjusting the transmission characteristics of the fiber optic channel is minimized and the overall performance of the system is improved.
摘要翻译：一种利用前向纠错优化监控回路响应时间的方法和系统。基于在FEC解码器中校正的错误的数量来调整光纤通信信道的特性。通过使用来自FEC解码器的信号比通过比较输入和输出传输更快地计算出自适应BER。因此，调整光纤通道的传输特性的滞后时间被最小化，并提高了系统的整体性能。

90. 发明申请

US20080089700A1 Receiving apparatus, transmitting apparatus, receiving method, and transmitting method for optical signal dispersion compensation 审中-公开
标题翻译：接收装置，发送装置，接收方法和光信号色散补偿的发送方法
公开(公告)号：US20080089700A1
公开(公告)日：2008-04-17
申请号：US11896276
申请日：2007-08-30
申请人： Tsukasa Takahashi
发明人： Tsukasa Takahashi
IPC分类号： H04B10/06
CPC分类号： H04B10/25133 , H04B10/0779 , H04B10/07953
摘要： Prior to data communication, an optical signal at a predetermined bit rate and an optical signal at a bit rate different from the predetermined bit rate are received from a transmitting apparatus. In a compensation amount controller, incremental amounts by which a compensation amount is changed are set corresponding to the bit rate of the optical signal received. The compensation amount controller controls a variable dispersion compensator, changes the compensation amount by the incremental amount, and searches for a predetermined compensation amount each time an optical signal is received. Based on the search results, the compensation amount controller obtains a compensation amount for the variable compensator corresponding to the optical signal received from the transmitting apparatus when data communication is performed.
摘要翻译：在数据通信之前，从发送装置接收预定比特率的光信号和与预定比特率不同的比特率的光信号。在补偿量控制器中，对应于所接收的光信号的比特率设定补偿量改变的增量量。补偿量控制器控制可变色散补偿器，将补偿量改变增量，并在每次接收到光信号时搜索预定的补偿量。基于搜索结果，当执行数据通信时，补偿量控制器获得与从发送装置接收的光信号相对应的可变补偿器的补偿量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式