公开(公告)号：US06483617B1

公开(公告)日：2002-11-19

申请号：US09637553

申请日：2000-08-11

申请人： Kim Byron Roberts

发明人： Kim Byron Roberts

IPC分类号： H04B1008

CPC分类号： H04B10/2563 ,  H04B10/077 ,  H04B10/07955

摘要： An optical transmission system comprises a number of optical terminals connected by optical waveguides such as optical fibers. Nonlinear processes occurring within an optical transmission medium of the waveguide or within the optical terminals is detected by a monitor which outputs monitored data representative of the products of nonlinearity. The data is used to control the power of the optical signal such that power is regulated to avoid the onset of the nonlinear process. The data may also be used to indicate an alarm condition to an operator. A monitor for four wave mixing detection utilizes dither signals applied to respective frequency components of a wavelength division multiplexed signal, products of the four wave mixing process being detected in the monitor by correlation between a sample of a received optical signal and reference data representative of dither induced modulation in the four wave mixing product. Mutually orthogonal dither wave forms are derived from pseudo-random sequences and applied as low frequency modulations to transmitted optical signals. Such monitors allow optical power to be controlled and assist in locating defective equipment requiring remedial action. The invention has application to long haul optical transmission systems.

摘要翻译： 光传输系统包括通过诸如光纤之类的光波导连接的多个光学终端。 在波导的光传输介质或光端点内发生的非线性处理由监视器检测，该监视器输出代表非线性的乘积的监视数据。 该数据用于控制光信号的功率，使得调节功率以避免非线性处理的开始。 数据也可以用于向操作员指示报警状况。 用于四波混频检测的监视器利用施加到波分复用信号的相应频率分量的抖动信号，通过接收到的光信号的样本与代表抖动的参考数据之间的相关性，在监视器中检测四波混频处理的乘积 诱导调制在四波混合产物中。 相互垂直的抖动波形从伪随机序列导出，并作为低频调制应用于传输的光信号。 这种监视器允许控制光功率，并有助于定位需要补救动作的有缺陷的设备。 本发明适用于长距离光传输系统。

公开(公告)号：US06229633B1

公开(公告)日：2001-05-08

申请号：US08865492

申请日：1997-05-29

申请人： Kim Byron Roberts ,  Anagnostis Hadjifotiou

发明人： Kim Byron Roberts ,  Anagnostis Hadjifotiou

IPC分类号： H04J1408

CPC分类号： H04B10/50 ,  G02F1/3517 ,  G02F2/004 ,  G02F2002/006 ,  H04B10/299 ,  H04J14/08 ,  H04L7/0075 ,  H04L7/027 ,  H04L7/033

摘要： An interferometer, such as a Mach-Zehnder type is fed with a pulse train. One arm is fed with a data stream, so as to modulate the pulse train according to the data stream. This enables the data stream to be regenerated, or sampled without converting from optical form into electrical form. Thus all optical regeneration, multiplexing, demultiplexing or retiming to remove jitter, can be achieved. An optical amplifier (20) in one arm of the interferometer enables the interference condition of the interferometer to be varied, to cause the pulse train to be modulated by the data.

摘要翻译： 诸如Mach-Zehnder型干涉仪馈送脉冲串。 一臂供给数据流，以便根据数据流调制脉冲序列。 这使得能够重新生成或采样数据流而不将光学形式转换成电形式。 因此，可以实现所有的光学再生，多路复用，解复用或重定时以消除抖动。 干涉仪的一个臂中的光放大器（20）能够改变干涉仪的干涉状态，从而使脉冲序列被数据调制。

公开(公告)号：US6128111A

公开(公告)日：2000-10-03

申请号：US769986

申请日：1996-12-19

申请人： Kim Byron Roberts

发明人： Kim Byron Roberts

IPC分类号： G02B6/00 ,  H04B10/02 ,  H04B10/08 ,  H04B10/18

CPC分类号： H04B10/2563 ,  H04B10/077 ,  H04B10/07955

摘要： An optical transmission system comprises a number of optical terminals connected by optical waveguides such as optical fibers. Nonlinear processes occurring within an optical transmission medium of the waveguide or within the optical terminals is detected by a monitor which outputs monitored data representative of the products of nonlinearity. The data is used to control the power of the optical signal such that power is regulated to avoid the onset of the nonlinear process. The data may also be used to indicate an alarm condition to an operator. A monitor for four wave mixing detection utilizes dither signals applied to respective frequency components of a wavelength division multiplexed signal, products of the four wave mixing process being detected in the monitor by correlation between a sample of a received optical signal and reference data representative of dither induced modulation in the four wave mixing product. Mutually orthogonal dither wave forms are derived from pseudo-random sequences and applied as low frequency modulations to transmitted optical signals. Such monitors allow optical power to be controlled and assist in locating defective equipment requiring remedial action. The invention has application to long haul optical transmission systems.

公开(公告)号：US6067179A

公开(公告)日：2000-05-23

申请号：US110182

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.

摘要翻译： 本发明提供了使用单向和双向WDM技术通过光链路传输非常高比特率的方法和系统。 用于光学传输的1550nm窗口在空间上分为两个频带“红色”和“蓝色”，并且选择每个频带中的频道，使得各个波长呈现基本相等的增益倾斜。 公开了根据本发明的空间分离和波长选择设计的光纤放大器以及多个跨度WDM网络拓扑。

公开(公告)号：US5999258A

公开(公告)日：1999-12-07

申请号：US882450

申请日：1997-06-26

申请人： Kim Byron Roberts

发明人： Kim Byron Roberts

IPC分类号： H04B10/02 ,  H04B10/08 ,  G01B9/02

CPC分类号： H04B10/07951

摘要： In an optical transmission system, multi-path interference is distinguished from the desired signal and other interferences, by measuring light transmitted from a source, using an element of the transmission system. Frequency modulation products are used, and the signature of the interference in the frequency spectrum is derived.

摘要翻译： 在光传输系统中，通过使用传输系统的元件测量从源发射的光，将多路径干扰与期望的信号和其它干扰区分开。 使用频率调制产品，得出频谱干扰的签名。

公开(公告)号：US5963312A

公开(公告)日：1999-10-05

申请号：US903220

申请日：1997-07-22

申请人： Kim Byron Roberts

发明人： Kim Byron Roberts

IPC分类号： H04B10/00 ,  H04B10/02 ,  H04B10/077 ,  H04B10/08 ,  G01N21/00

CPC分类号： H04B10/077 ,  H04B2210/074 ,  H04B2210/078

摘要： A system for locating sources of degradation of an optical path of an optical transmission system comprises means for transmitting (1) along the path a test pattern signal having a frequency spectrum predominately in a band below a data traffic rate means (4) for recovering the test pattern at a plurality of separate points in the path means (4) for determining an amount of pattern degradation from the shape of the recovered pattern, and means (5) for comparing the amounts of pattern degradation at the separate points to locate the source. A broad range of types of degradation can be detected efficiently, and the results used to take corrective action.

摘要翻译： 用于定位光传输系统的光路的劣化源的系统包括用于沿着路径发送（1）具有主要在频带下方的频谱的测试码型信号的装置（4）的装置，用于恢复 在路径装置（4）中的多个分离点处的测试图案，用于根据恢复的图案的形状确定图案退化的量;以及用于比较分离点处的图案劣化量以定位源的装置（5） 。 可以有效地检测各种类型的降解，并且结果用于采取纠正措施。

公开(公告)号：US06509990B1

公开(公告)日：2003-01-21

申请号：US09629140

申请日：2000-07-31

申请人： Kim Byron Roberts

发明人： Kim Byron Roberts

IPC分类号： H04B1000

CPC分类号： H04B10/299 ,  G02F1/3517 ,  G02F2/004 ,  G02F2203/70 ,  H04B10/2914 ,  H04J14/08 ,  H04L7/0075 ,  H04L7/033 ,  H04L7/0337

摘要： Optical timing detection, for phase comparison of optical signals, or clock recovery is achieved by arranging an interferometer to be responsible to data transitions. A pulse train is fed into both arms of the interferometer. An optical amplifier (20) enables the interference condition to be changed when the data is fed into one arm. The output changed if the data transitions lose synchronisation with the pulse train.

摘要翻译： 光学定时检测，用于光信号的相位比较或时钟恢复是通过布置干涉仪来负责数据转换来实现的。 脉冲串被馈入干涉仪的两个臂。 当数据被馈送到一个臂中时，光放大器（20）能够改变干扰条件。 如果数据转换与脉冲序列失去同步，则输出变化。

公开(公告)号：US06313932B1

公开(公告)日：2001-11-06

申请号：US09048402

申请日：1998-03-25

申请人： Kim Byron Roberts ,  Maurice M O'Sullivan ,  Alan Robinson ,  Richard Edward Epworth

发明人： Kim Byron Roberts ,  Maurice M O'Sullivan ,  Alan Robinson ,  Richard Edward Epworth

IPC分类号： H04J1402

CPC分类号： G02B6/12011 ,  G02B6/12019 ,  G02B6/12026 ,  G02B6/12028 ,  G02B6/12033 ,  G02B6/2861 ,  H04J14/02 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/0064 ,  H04L1/0071 ,  H04L1/22 ,  H04L1/24 ,  H04L7/0075

摘要： Optical signals in an optical communication system are transmitted as a train of optical pulses which are multiplexed to provide a large number of channels. Error correction coding is applied to data carried by the channels using both interchannel coding and serial coding of individual channels. When multiplexed by wavelength division multiplexing, a waveguide array is used as a dispersive device having a characteristic of frequency selectivity which is locked by a monitoring and control system to a set of spectral lines from the single pulsed laser which generates the pulses. In the receiver, clock signals are generated by extracting clock signals from the earliest and latest received channel signals and performing interpolation to obtain clock signals for the remaining channels. When multiplexed using a spectral modulation technique, individual channels are represented by distinct sinusoidal modulations in frequency space which are then detected in the receiver by Mach-Zehnder filters.

摘要翻译： 光通信系统中的光信号作为一系列光脉冲发送，其被多路复用以提供大量的信道。 错误校正编码被应用于使用各个信道的信道间编码和串行编码的信道承载的数据。 当通过波分复用进行多路复用时，波导阵列被用作具有频率选择性特性的分散装置，其被监视和控制系统锁定到产生脉冲的单脉冲激光器的一组谱线。 在接收机中，通过从最早和最新的接收信道信号中提取时钟信号并执行内插以获得剩余信道的时钟信号来产生时钟信号。 当使用频谱调制技术进行复用时，通过马赫曾德滤波器在接收机中检测到频率空间中的不同正弦调制来表示各个信道。

公开(公告)号：US06282007B1

公开(公告)日：2001-08-28

申请号：US08886994

申请日：1997-07-02

申请人： Kim Byron Roberts

发明人： Kim Byron Roberts

IPC分类号： H04B1004

CPC分类号： H04B10/299 ,  G02F1/3517 ,  G02F2/004 ,  H04B10/2914 ,  H04J14/08 ,  H04L7/0075 ,  H04L7/033 ,  H04L7/0337

摘要： Optical timing detection, for phase comparison of optical signals, or clock recovery is achieved by arranging an interferometer to be responsible to data transitions. A pulse train is fed into both arms of the interferometer. An optical amplifier (20) enables the interference condition to be changed when the data is fed into one arm. The output changed if the data transitions lose synchronization with the pulse train.

摘要翻译： 光学定时检测，用于光信号的相位比较或时钟恢复是通过布置干涉仪来负责数据转换来实现的。 脉冲串被馈入干涉仪的两个臂。 当数据被馈送到一个臂中时，光放大器（20）能够改变干扰条件。 如果数据转换与脉冲序列失去同步，则输出变化。

公开(公告)号：US06222652B1

公开(公告)日：2001-04-24

申请号：US08879751

申请日：1997-06-20

申请人： Kim Byron Roberts

发明人： Kim Byron Roberts

IPC分类号： H04B1008

CPC分类号： H04B10/077 ,  H04B10/07955

摘要： A method of monitoring transients in an optical transmission system having two or more optical elements is disclosed. The method comprises detecting the existence of a transient in the system and determining the cause of the transient or the location of the cause of the transient by monitoring variations in system characteristics.

摘要翻译： 公开了一种在具有两个或更多个光学元件的光传输系统中监视瞬变的方法。 该方法包括通过监测系统特性的变化来检测系统中瞬态的存在并确定瞬态原因或瞬态原因位置。