专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US6101016A Optical transmission systems using optical amplifiers and wavelength division multiplexing 失效
公开(公告)号：US6101016A
公开(公告)日：2000-08-08
申请号：US110335
申请日：1998-07-06
申请人： Kim Byron Roberts , Maurice Stephen O'Sullivan , Gregory Dean May
发明人： Kim Byron Roberts , Maurice Stephen O'Sullivan , Gregory Dean May
IPC分类号： G02B6/293 , H04B3/38 , H04B10/00 , H04B10/16 , H04B10/17 , H04B10/24 , H04J14/00 , H04J14/02
CPC分类号： H04J14/0291 , H04B10/032 , H04B10/2503 , H04B10/2972 , H04J14/0221 , H04J14/0241 , H04J14/0227 , H04J14/0279 , H04J14/0283
摘要： The invention provides a method and system for transmitting very high bit rates over an optical link, using unidirectional and bidirectional WDM technology. The 1550 nm window for optical transmission is spatially separated into two bands, "Red" and "Blue", and the channels in each band are selected so that respective wavelengths present a substantially equal gain tilt. A fiber amplifier designed according to spatial separation and wavelength selection of the invention is disclosed, along with multiple span WDM network topologies.

32. 发明授权

US6072614A Monitoring induced counterpropagating signals in optical communications systems 失效
标题翻译：监测在光通信系统中引起的反向传播信号
公开(公告)号：US6072614A
公开(公告)日：2000-06-06
申请号：US916168
申请日：1997-08-21
申请人： Kim Byron Roberts
发明人： Kim Byron Roberts
IPC分类号： H04B10/08 , H04B10/16
CPC分类号： H04B10/071
摘要： An optical communications system has a control system for controlling the transmission of signals between system elements via waveguides. The occurrence of counterpropagation occurring due to scattering or other bulk properties of the waveguides is monitored under the control of the control system at selected system elements such as bidirectional optical amplifiers. A reverse signal found to be consistent with a scattering process is analysed in terms of a power distribution as a function of delay relative to transmission of an outgoing signal and any effects due to discrete scattering events are identified and removed from the power distribution data. The revised data is used to quantify the effects of the scattering process. Stimulated Brillouin scattering is identified by analysis of backscatter in terms of wavelength of selected signals in a wavelength multiplexed transmission and the control system responds by regulating operating parameters of the system such as the degree of stimulated Brillouin scattering suppression and transmission power. The system is thereby able to automatically detect the occurrence of faults associated with bulk properties of the waveguides of the system and initiate appropriate remedial action or raise alarms.
摘要翻译：光通信系统具有用于通过波导控制系统元件之间的信号传输的控制系统。在诸如双向光放大器之类的选定系统元件的控制系统的控制下监视由于波导的散射或其他体积特性而发生的反向繁殖的发生。发现与散射过程一致的反向信号根据作为输出信号的传输的延迟的函数的功率分布进行分析，并且从功率分布数据中识别和去除由于离散散射事件引起的任何影响。修订后的数据用于量化散射过程的影响。通过在波长多路复用传输中根据所选信号的波长分析后向散射来确定受激布里渊散射，并且控制系统通过调节系统的操作参数（例如受激布里渊散射抑制和发射功率的程度）来进行响应。因此，该系统能够自动检测与系统的波导体的散装性质相关联的故障的发生，并且启动适当的补救动作或提高警报。

33. 发明授权

US5969840A Optical element power control 失效
标题翻译：光元件功率控制
公开(公告)号：US5969840A
公开(公告)日：1999-10-19
申请号：US715662
申请日：1996-09-18
申请人： Kim Byron Roberts
发明人： Kim Byron Roberts
IPC分类号： H04B10/294 , H04B10/50 , H04B10/564 , H01S3/16
CPC分类号： H04B10/564 , H04B10/2942 , H04B10/506
摘要： A control system for an optical element such as an optical amplifier in an optical transmission system determines the transmitted optical signal power in each of a plurality of different optical wavelength bands, determines which of the powers is closest to a threshold, and controls an output power of the element, or controls a parameter which affects the threshold, on the basis of the power closest to the threshold. Since there is no longer any need to allow a margin for possible gain variations between different wavelengths, power output can be controlled with reduced upper or lower margins, and thus error rates reduced, or transmission distances increased.
摘要翻译：用于光传输系统中诸如光放大器的光学元件的控制系统确定在多个不同光波长带中的每一个中传输的光信号功率，确定哪个功率最接近阈值，并且控制输出功率或者基于最接近阈值的功率来控制影响阈值的参数。由于不再需要允许不同波长之间可能的增益变化的余量，所以可以通过减小上限或下限来控制功率输出，从而降低误码率或增加传输距离。

34. 发明授权

US5896391A Forward error correction assisted receiver optimization 失效
标题翻译：前向纠错辅助接收机优化
公开(公告)号：US5896391A
公开(公告)日：1999-04-20
申请号：US769312
申请日：1996-12-19
申请人： Alan Glen Solheim , Kim Byron Roberts
发明人： Alan Glen Solheim , Kim Byron Roberts
IPC分类号： H04L1/00 , H04L25/06 , G06F11/00
CPC分类号： H04L1/0061 , H04L1/0045 , H04L1/203 , H04L25/063 , H04L7/0025 , H04L7/0054 , H04L7/0337
摘要： A method for recovering an outgoing data signal from an incoming signal received over a transmission network. The method provides for preparing a bit error rate (BER) map for a data regenerator, determining, on the BER map, an optimal operation point for a provisioned BER.sub.prov value, and monitoring the data regenerator to function in the optimal operation point for providing a regenerated data signal. In addition, the errors in the regenerated data signal may be further corrected using current forward error correction circuitry. To prepare a BER map, the data regenerator operates in an error mapping mode, wherein the incoming signal is decoded using a slicing level V.sub.i and a phase shifted clock signal CL.sub.j. Each value BER.sub.i,j is measured over a preset period of time T.sub.prov for a pair V.sub.i, .phi..sub.j and stored in a memory. The BER maps may be prepared once a day or at any other suitable interval. In the optimization mode, the operation point for the regenerator is calculated for a BER contour corresponding to the provisioned BER.sub.prov, for determining the coordinates V.sub.opt and .phi..sub.opt. In the data regeneration mode, the regenerated data signal is obtained using V.sub.opt and .phi..sub.opt.
摘要翻译：一种用于从通过传输网络接收的输入信号中恢复输出数据信号的方法。该方法提供用于准备数据再生器的误比特率（BER）映射，在BER映射上确定所提供的BERPRV值的最佳操作点，并监视数据再生器在最佳操作点中的功能，以提供再生数据信号。此外，可以使用当前前向纠错电路进一步校正再生数据信号中的错误。为了准备BER映射，数据再生器以误差映射模式工作，其中使用限幅电平Vi和相移时钟信号CLj对输入信号进行解码。对于一对Vi，phi j，在预设的一段时间Tprov中测量每个值BERi，j并存储在存储器中。 BER图可以每天准备一次或以任何其他合适的间隔。在优化模式中，针对与所提供的BERprov对应的BER轮廓计算再生器的操作点，以确定坐标Vopt和phi opt。在数据再生模式下，使用Vopt和phi opt获得再生数据信号。

35. 发明授权

US5892858A Duobinary coding and modulation technique for optical communication systems 失效
标题翻译：光通信系统的二进制编码和调制技术
公开(公告)号：US5892858A
公开(公告)日：1999-04-06
申请号：US827419
申请日：1997-03-27
申请人： Mazoud Vaziri , Maurice S. O'Sullivan , Terry W. B. Taraschuk , Alan Glen Solheim , Kim Byron Roberts
发明人： Mazoud Vaziri , Maurice S. O'Sullivan , Terry W. B. Taraschuk , Alan Glen Solheim , Kim Byron Roberts
IPC分类号： G02F1/01 , H03M5/16 , H03M5/18 , H04B10/00 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04B10/155 , H04L25/497 , G02B6/10
CPC分类号： H04B10/5055 , H03M5/18 , H04B10/505 , H04B10/5167
摘要： A method for encoding a binary input sequence x(0,1) to obtain a duobinary output sequence y(+1,0,-1) is provided. The duobinary coding technique always provides an output bit y.sub.k =0 when the corresponding bit x.sub.k =0; bits y.sub.k alternatively assume a logical level "+1" and "-1" whenever an input bit x.sub.k-1 =0 changes to x.sub.k =1, and the output bit y.sub.k maintains the logical level "+1" or "-1" whenever the corresponding bit x.sub.k maintains the logical level "1". A coding device for encoding a binary input sequence x(0,1) to a duobinary output sequence y(+1,0,-1) is also provided, comprising a D-type flip-flop for generating a binary switch signal. A first AND circuit receives the input sequence and the switch signal, and provides a first binary sequence a(0,1), while a second AND circuit receives the input sequence and the complement of the switch signal and provides a second binary sequence b(0,1). These first and second binary sequences are applied to a summer to obtain the output sequence y(+1,0,-1). A method for differentially driving a M-Z modulator using a virtual ground level is also provided, which reduces the peak-to-peak drive voltage by a factor of two.
摘要翻译：提供了一种用于对二进制输入序列x（0,1）进行编码以获得双二进制输出序列y（+ 1,0，-1）的方法。当对应的位xk = 0时，双向编码技术总是提供输出位yk = 0; 只要输入位xk-1 = 0改变为xk = 1，位yk或者假设逻辑电平“+1”和“-1”，并且输出位yk每当维持逻辑电平“+1”或“-1” 对应的位xk保持逻辑电平“1”。还提供了用于将二进制输入序列x（0,1）编码到二进制输出序列y（+ 1,0，-1）的编码装置，包括用于产生二进制开关信号的D型触发器。第一AND电路接收输入序列和开关信号，并提供第一二进制序列a（0,1），而第二AND电路接收输入序列和开关信号的补码，并提供第二二进制序列b（ 0,1）。将这些第一和第二二进制序列应用于加法器以获得输出序列y（+ 1,0，-1）。还提供了一种用于使用虚拟接地电平差分驱动M-Z调制器的方法，其将峰 - 峰驱动电压降低了二倍。

36. 发明授权

US5859716A Self-stimulation signal detection in an optical transmission system 失效
标题翻译：光传输系统中的自刺激信号检测
公开(公告)号：US5859716A
公开(公告)日：1999-01-12
申请号：US588176
申请日：1996-01-18
申请人： Maurice Stephen O'Sullivan , Kim Byron Roberts , James St.Leger Harley , Jeffrey Alan Weslowski
发明人： Maurice Stephen O'Sullivan , Kim Byron Roberts , James St.Leger Harley , Jeffrey Alan Weslowski
IPC分类号： H01S3/10 , H04B10/02 , H04B10/08 , H04B10/16 , H04B10/17
CPC分类号： H04B10/291 , H04B10/0771 , H04B10/0777 , H04B2210/075
摘要： In an apparatus and method for troubleshooting a transmission system comprising optical line amplifiers (OA), optical reflections can be detected irrespective if a data signal is present or absent. Each OA is equipped with a self-stimulation signal detection unit for generating a low frequency local code unique to the transmission system and dithering the outgoing signal in a controlled manner with the local code. Each OA attempts to detect its local code in the incoming signal by comparing the energy of the transmitted and received dithers. The presence of the local code in the incoming signal initiates alarms which unequivocally identify the faulted OA. Each OA selects its local code out of a bank of local codes, according to a priority scheme and re-selects its local code in case of conflicts.
摘要翻译：在用于对包括光线路放大器（OA）的传输系统进行故障排除的装置和方法中，无论数据信号是否存在，都可以检测光学反射。每个OA配备有自刺激信号检测单元，用于产生传输系统唯一的低频本地码，并以受控方式用本地码对出局信号进行抖动。每个OA尝试通过比较发送和接收抖动的能量来检测输入信号中的本地代码。输入信号中存在本地代码会启动明确识别故障OA的警报。每个OA根据优先级方案从一组本地代码中选择其本地代码，并在发生冲突时重新选择其本地代码。

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