公开(公告)号：US20060182440A1

公开(公告)日：2006-08-17

申请号：US11405992

申请日：2006-04-18

申请人： Boris Stefanov ,  Mohammad Laham ,  Kevin Beach ,  Scott Kaminski

发明人： Boris Stefanov ,  Mohammad Laham ,  Kevin Beach ,  Scott Kaminski

IPC分类号： H04B10/08

CPC分类号： H04Q11/0005 ,  H04Q2011/0024 ,  H04Q2011/0043 ,  H04Q2011/0056 ,  H04Q2011/0083

摘要： A robust nonblocking switch architecture is presented, in the first and final stages made of switch modules which have extra, unallocated, input and output ports beyond those necessary to render the switch architecture nonblocking. Each middle stage has an extra switch module, affording it spare unallocated ports as well. A method of isolating a fault is also presented, given the robust switching architecture. Operating on each stage one at a time, the switching architecture is reconnected so as to bypass either the input, the output, or both the input and the output ports of the switch module in such stage impacted in the faulted signal path. Such method allows the isolation of the faulty switch module, and can be done automatically, with either external apparatus, or integrated fault isolation equipment.

公开(公告)号：US07633674B2

公开(公告)日：2009-12-15

申请号：US12254380

申请日：2008-10-20

申请人： Mohammad Laham ,  Boris Stefanov

发明人： Mohammad Laham ,  Boris Stefanov

IPC分类号： H01S5/00 ,  H04B10/08 ,  G02B6/28 ,  H04B10/12

CPC分类号： H01S5/4025 ,  G02B6/2813 ,  H01S5/5045

摘要： A photonic integrated circuit having a plurality of circuit components, is disclosed, which may include an MMI for splitting signal power passing therethrough among first and second optical pathways coupled to first and second outputs, respectively, of the MMI, thereby directing first and second percentages of the signal power along the first and the second optical pathways, respectively; and a photodetector integrated into the photonic integrated circuit and coupled to said first optical pathway for measuring a signal power level on said first optical pathway.

摘要翻译： 公开了具有多个电路部件的光子集成电路，其可以包括MMI，用于将分别耦合到MMI的第一和第二输出的第一和第二光学路径之间通过的信号功率分开，从而指示第一和第二百分比 分别沿着第一和第二光学路径的信号功率; 以及集成到所述光子集成电路中并耦合到所述第一光学路径以用于测量所述第一光学路径上的信号功率电平的光电检测器。

公开(公告)号：US06671467B2

公开(公告)日：2003-12-30

申请号：US10195263

申请日：2002-07-15

申请人： Bharat Dave ,  Doruk Engin ,  Kwang Kim ,  Mohammad Laham ,  Julio Martinez ,  Olga Nedzhvetskaya ,  Jithamithra Sarathy ,  Roanld Simprini ,  Boris Stefanov ,  Tan Buu Thai

发明人： Bharat Dave ,  Doruk Engin ,  Kwang Kim ,  Mohammad Laham ,  Julio Martinez ,  Olga Nedzhvetskaya ,  Jithamithra Sarathy ,  Roanld Simprini ,  Boris Stefanov ,  Tan Buu Thai

IPC分类号： H04B1004

CPC分类号： H04B10/299 ,  H04L7/0075

摘要： A method and circuit are presented for the all optical recovery of the clock signal from an arbitrary optical data signal. The method involves two stages. A first stage preprocesses the optical signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The output of the preprocessing stage is fed to a clock recovery stage, which consists of a symmetric interferometer that locks on to the inherent clock signal by using the second stage input signal to trigger two optical sources to self oscillate at the clock rate. In a preferred embodiment the second stage is implemented via SOAs integrated in the arms of an interferometer, with two DFB lasers as terminuses. The output of the interferometer is an optical clock signal at the clock rate of the original input.

公开(公告)号：US20090041454A1

公开(公告)日：2009-02-12

申请号：US12254380

申请日：2008-10-20

申请人： Mohammad Laham ,  Boris Stefanov

发明人： Mohammad Laham ,  Boris Stefanov

IPC分类号： H04B10/08

CPC分类号： H01S5/4025 ,  G02B6/2813 ,  H01S5/5045

摘要： A photonic integrated circuit having a plurality of circuit components, is disclosed, which may include an MMI for splitting signal power passing therethrough among first and second optical pathways coupled to first and second outputs, respectively, of the MMI, thereby directing first and second percentages of the signal power along the first and the second optical pathways, respectively; and a photodetector integrated into the photonic integrated circuit and coupled to said first optical pathway for measuring a signal power level on said first optical pathway.

摘要翻译： 公开了具有多个电路部件的光子集成电路，其可以包括MMI，用于将分别耦合到MMI的第一和第二输出的第一和第二光学路径之间通过的信号功率分开，从而指示第一和第二百分比 分别沿着第一和第二光学路径的信号功率; 以及集成到所述光子集成电路中并耦合到所述第一光学路径以用于测量所述第一光学路径上的信号功率电平的光电检测器。

公开(公告)号：US07440179B2

公开(公告)日：2008-10-21

申请号：US10446451

申请日：2003-05-28

申请人： Mohammad Laham ,  Boris Stefanov

发明人： Mohammad Laham ,  Boris Stefanov

IPC分类号： H01S5/00 ,  H04B10/08 ,  H04B10/12

CPC分类号： H01S5/4025 ,  G02B6/2813 ,  H01S5/5045

摘要： The method of isolating faults internal to, for example, from tonic integrated circuits by diverting a portion of certain input and output signals to integrated photo detectors. By analyzing the admitted optical signal in each of plural photo detectors, falls within the circuit can be isolated.

摘要翻译： 通过将某些输入和输出信号的一部分转移到集成的光电检测器来将故障内部隔离到强调集成电路的方法。 通过分析多个光电检测器中的每一个中允许的光信号，可以隔离电路内的下降。

公开(公告)号：US06856767B2

公开(公告)日：2005-02-15

申请号：US09837855

申请日：2001-04-18

申请人： Mohammad Laham ,  Raj Acharya ,  Roman Antosik ,  Jayantha Das ,  Bharat Dave ,  Chinnabbu Ekambaram ,  Khem Gandhi ,  Frank Hujber ,  David Lowe ,  Frederick Renner ,  Jiten Sarathy ,  Ronald Simprini ,  Boris Stefanov ,  Tan Thai ,  Ravi Vora

发明人： Mohammad Laham ,  Raj Acharya ,  Roman Antosik ,  Jayantha Das ,  Bharat Dave ,  Chinnabbu Ekambaram ,  Khem Gandhi ,  Frank Hujber ,  David Lowe ,  Frederick Renner ,  Jiten Sarathy ,  Ronald Simprini ,  Boris Stefanov ,  Tan Thai ,  Ravi Vora

IPC分类号： H04B10/08 ,  H04J14/02 ,  H04Q11/00

CPC分类号： H04Q11/0005 ,  H04B10/077 ,  H04B10/07955 ,  H04J14/0227 ,  H04J14/0297 ,  H04Q2011/0043 ,  H04Q2011/0083

摘要： The present invention provides an optical signal quality selection system for optimizing the quality of information transmission. The system splits an incoming optical signal into two equal signals. The split signals are evaluated in optical performance monitors, transmitting an electrical output message to a signal selector relating to the quality of the respective signal. A second electrical message is sent from the optical performance generator to an alarm indicator signal generator, which sends an optical signal to the signal selector to drop the one of the split signals and transmit the non-dropped split signal. An unequipped optical signal from an optical idle signal generator is triggered if no active optical signal is being transmitted.

摘要翻译： 本发明提供一种用于优化信息传输质量的光信号质量选择系统。 系统将输入的光信号分成两个相等的信号。 在光学性能监视器中评估分离信号，将电输出消息发送到与各个信号的质量有关的信号选择器。 从光学性能发生器发送第二个电子消息到报警指示符信号发生器，其向信号选择器发送光信号以丢弃分离信号之一并发送未丢弃的分离信号。 如果没有传输有效的光信号，则触发来自光空闲信号发生器的未装备的光信号。

公开(公告)号：US06624924B2

公开(公告)日：2003-09-23

申请号：US10195700

申请日：2002-07-15

申请人： Bharat Dave ,  Doruk Engin ,  Kwang Kim ,  Mohammad Laham ,  Julio Martinez ,  Olga Nedzhvetskaya ,  Jithamithra Sarathy ,  Ronald Simprini ,  Boris Stefanov ,  Tan Buu Thai

发明人： Bharat Dave ,  Doruk Engin ,  Kwang Kim ,  Mohammad Laham ,  Julio Martinez ,  Olga Nedzhvetskaya ,  Jithamithra Sarathy ,  Ronald Simprini ,  Boris Stefanov ,  Tan Buu Thai

IPC分类号： G02F135

CPC分类号： H04B10/299 ,  H04L7/0075

摘要： A method and circuit are presented for the all optical recovery of the clock signal from an arbitrary optical data signal. The method involves two stages. A first stage preprocesses the optical signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The output of the preprocessing stage is fed to a clock recovery stage, which consists of a symmetric interferometer that locks on to the inherent clock signal by using the second stage input signal to trigger two optical sources to self oscillate at the clock rate. In a preferred embodiment the second stage is implemented via SOAs integrated in the arms of an interferometer, with two DFB lasers as terminuses. The output of the interferometer is an optical clock signal at the clock rate of the original input.

公开(公告)号：US06678086B2

公开(公告)日：2004-01-13

申请号：US10195766

申请日：2002-07-15

申请人： Bharat Dave ,  Doruk Engin ,  Kwang Kim ,  Mohammad Laham ,  Julio Martinez ,  Olga Nedzhvetskaya ,  Jithamithra Sarathy ,  Ronald Simprini ,  Boris Stefanov ,  Tan Buu Thai

发明人： Bharat Dave ,  Doruk Engin ,  Kwang Kim ,  Mohammad Laham ,  Julio Martinez ,  Olga Nedzhvetskaya ,  Jithamithra Sarathy ,  Ronald Simprini ,  Boris Stefanov ,  Tan Buu Thai

IPC分类号： G02F135

CPC分类号： H04B10/299 ,  H04L7/0075

摘要： A method and circuit are presented for the all optical recovery of the clock signal from an arbitrary optical data signal. The method involves two stages. A first stage preprocesses the optical signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The output of the preprocessing stage is fed to a clock recovery stage, which consists of a symmetric interferometer that locks on to the inherent clock signal by using the second stage input signal to trigger two optical sources to self oscillate at the clock rate. In a preferred embodiment the second stage is implemented via SOAs integrated in the arms of an interferometer, with two DFB lasers as terminuses. The output of the interferometer is an optical clock signal at the clock rate of the original input.

摘要翻译： 提出了一种用于从任意光数据信号对时钟信号进行全光学恢复的方法和电路。 该方法涉及两个阶段。 第一级通过将NRZ信号转换为PRZ信号，或者如果输入光信号是RZ，则仅通过放大来预处理光信号。 在优选实施例中，该阶段通过不对称干涉仪装置的每个臂中的集成SOA来实现。 预处理阶段的输出被馈送到时钟恢复阶段，时钟恢复阶段包括通过使用第二级输入信号来锁定固有时钟信号的对称干涉仪，以触发两个光源以时钟速率自振荡。 在优选实施例中，第二级通过集成在干涉仪的臂中的SOA实现，其中两个DFB激光器作为终端。 干涉仪的输出是以原始输入的时钟速率的光时钟信号。

公开(公告)号：US06563621B2

公开(公告)日：2003-05-13

申请号：US09849441

申请日：2001-05-04

申请人： Bharat Dave ,  Doruk Engin ,  Kwang Kim ,  Mohammad Laham ,  Julio Martinez ,  Olga Nedzhvetskaya ,  Jithamithra Sarathy ,  Ronald Simprini ,  Boris Stefanov ,  Tan Buu Thai

发明人： Bharat Dave ,  Doruk Engin ,  Kwang Kim ,  Mohammad Laham ,  Julio Martinez ,  Olga Nedzhvetskaya ,  Jithamithra Sarathy ,  Ronald Simprini ,  Boris Stefanov ,  Tan Buu Thai

IPC分类号： H04B1002

CPC分类号： H04B10/299 ,  H04L7/0075

摘要： A method and circuit are presented for the all optical recovery of the clock signal from an arbitrary optical data signal. The method involves two stages. A first stage preprocesses the optical signal by converting a NRZ signal to a PRZ signal, or if the input optical signal is RZ, by merely amplifying it. In a preferred embodiment this stage is implemented via an integrated SOA in each arm of an asymmetric interferometric device. The output of the preprocessing stage is fed to a clock recovery stage, which consists of a symmetric interferometer that locks on to the inherent clock signal by using the second stage input signal to trigger two optical sources to self oscillate at the clock rate. In a preferred embodiment the second stage is implemented via SOAs integrated in the arms of an interferometer, with two DFB lasers as terminuses. The output of the interferometer is an optical clock signal at the clock rate of the original input.

公开(公告)号：US07190909B2

公开(公告)日：2007-03-13

申请号：US10172369

申请日：2002-06-14

申请人： Jayanta Das ,  Ganesh Lakshminarayana ,  Kuo-Ming Lee ,  Roman Antosik ,  Scott Kaminski ,  Jithamithra Sarathy ,  Boris Stefanov ,  Ronald Simprini ,  Bharat Dave

发明人： Jayanta Das ,  Ganesh Lakshminarayana ,  Kuo-Ming Lee ,  Roman Antosik ,  Scott Kaminski ,  Jithamithra Sarathy ,  Boris Stefanov ,  Ronald Simprini ,  Bharat Dave

IPC分类号： H04B10/00

CPC分类号： H04B10/0775 ,  H04B2210/078

摘要： Method and apparatus are presented for the generation and detection of maintenance signals in an optical data network. The maintenance signals are such that they can be read both by high bit-rate and low bit-rate receivers. Detection of the maintenance signals occurs in two stages. In a low bit-rate first stage each nodal input port is sampled in a round robin fashion to detect the presence of a maintenance signal. In a high bit-rate second stage the maintenance signal is verified and read by a high speed receiver, along with other high bit-rate information transmitted with it. One second stage high speed receiver is shared among M input channels for cost and circuit efficiency.

摘要翻译： 提出了用于在光数据网络中生成和检测维护信号的方法和装置。 维护信号使得它们可以被高比特率和低比特率接收机读取。 维护信号的检测分两个阶段进行。 在低比特率第一级中，每个节点输入端口以循环方式进行采样以检测维护信号的存在。 在高比特率第二级中，维护信号与高速接收机一起被验证和读取，以及与其一起发送的其他高比特率信息。 一个第二级高速接收机在M个输入通道之间共享成本和电路效率。