公开(公告)号：US20120038974A1

公开(公告)日：2012-02-16

申请号：US13209752

申请日：2011-08-15

申请人： Hongsheng Wang

发明人： Hongsheng Wang

IPC分类号： H01S5/20 ,  H01S5/00

CPC分类号： H04B10/07955 ,  G01J1/0295 ,  G01J1/4204 ,  G01J1/4228 ,  G01J1/4257 ,  H01S5/02284 ,  H01S5/0683 ,  H01S5/50 ,  H01S2301/02 ,  H01S2301/18

摘要： An apparatus for monitoring optical equipment in an optical circuit is disclosed in which the apparatus may include an optical device situated to receive an optical input signal and to reflect a portion of the energy of the received optical input signal, thereby providing a reflected input signal; a first photodiode located along a path of the reflected input signal, and operable to receive optical energy from the reflected optical input signal and from ambient optical power; a second photodiode located substantially outside the reflection path of the optical input signal; and means for calculating a magnitude of a power level of the optical input signal from values of outputs from the first and second photodiodes.

摘要翻译： 公开了一种用于监视光学电路中的光学设备的装置，其中该装置可以包括光学装置，该光学装置用于接收光学输入信号并反射所接收的光学输入信号的能量的一部分，由此提供反射的输入信号; 沿着反射的输入信号的路径设置的第一光电二极管，并且可操作以从反射的光输入信号和环境光功率接收光能; 基本上位于光输入信号的反射路径外侧的第二光电二极管; 以及用于根据来自第一和第二光电二极管的输出的值计算光输入信号的功率电平的大小的装置。

公开(公告)号：US08000605B2

公开(公告)日：2011-08-16

申请号：US10442876

申请日：2003-05-21

申请人： Bharat Dave

发明人： Bharat Dave

IPC分类号： H04J14/08

CPC分类号： G02F3/00 ,  G02F2001/217 ,  G02F2203/70 ,  H04J14/08

摘要： Methods and apparatus for implementing synchronous Optical Time Division Multiplexing are presented. Namely, a method of upconverting and combining N input NRZ optical data signals, each having an approximately equal pulse width and period, into one time-division multiplexed output signal, as well as a method for the inverse, i.e., down converting the N demultiplexed component signals are presented. Apparatus to implement these functionalities is also presented.

摘要翻译： 提出实现同步光时分复用的方法和装置。 即，将具有大致相等的脉冲宽度和周期的N个输入NRZ光学数据信号上变频并组合成一个时分多路复用输出信号的方法，以及用于逆解调的方法，即将N解复用 提出了分量信号。 还介绍了实现这些功能的装置。

公开(公告)号：US20090059355A1

公开(公告)日：2009-03-05

申请号：US12043496

申请日：2008-03-06

申请人： Hongsheng Wang

发明人： Hongsheng Wang

IPC分类号： H01S3/00

CPC分类号： G02F1/3519

摘要： An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD.

摘要翻译： 描述了可以包括提供输出信号的SOA-MZI电路的光学电路; 以及被配置为接收SOA-MZI的输出信号并且在PFD的输出处提供至少一个信号的偏振滤波器件（PFD）。

公开(公告)号：US07319555B2

公开(公告)日：2008-01-15

申请号：US11412435

申请日：2006-04-27

申请人： Ganesh Lakshminarayana ,  Ruomei Mu ,  Hongsheng Wang ,  Jithamithra Sarathy ,  Boris Stefanov

发明人： Ganesh Lakshminarayana ,  Ruomei Mu ,  Hongsheng Wang ,  Jithamithra Sarathy ,  Boris Stefanov

IPC分类号： H01S3/00

CPC分类号： H04B10/0775 ,  H04B10/0777

摘要： Monitoring of the input power is performed on-chip and is used to monitor and maintain performance, detect failure and trigger network protection strategies. An optical power-monitoring technique uses a photodetector monolithically integrated with the semiconductor optical amplifier—Mach-Zehnder interferometer circuit to monitor the P2R device and keep the output stable while the input power varies.

摘要翻译： 输入功率的监控是片内执行的，用于监控和维护性能，检测故障并触发网络保护策略。 光功率监测技术使用与半导体光放大器 - 马赫 - 策德尔干涉仪电路单片集成的光电检测器来监测P2R器件，并在输入功率变化时保持输出稳定。

公开(公告)号：US08379301B2

公开(公告)日：2013-02-19

申请号：US13046284

申请日：2011-03-11

申请人： Hongsheng Wang

发明人： Hongsheng Wang

IPC分类号： H01S5/00 ,  G02F1/35 ,  G02F3/00 ,  H04B10/12

CPC分类号： G02F1/3519

摘要： An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD.

摘要翻译： 描述了可以包括提供输出信号的SOA-MZI电路的光学电路; 以及被配置为接收SOA-MZI的输出信号并且在PFD的输出处提供至少一个信号的偏振滤波器件（PFD）。

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：US20070300137A1

公开(公告)日：2007-12-27

申请号：US11755614

申请日：2007-05-30

申请人： Ganesh Lakshminarayana ,  Jayanta Das

发明人： Ganesh Lakshminarayana ,  Jayanta Das

IPC分类号： H03M13/00

CPC分类号： H03M13/1555 ,  H03M13/1515 ,  H03M13/1595 ,  H03M13/6561

摘要： A method and apparatus are disclosed to achieve a resource optimized, class of RS decoders, featuring balanced pipelined stages and parallel algorithmic components. Our RS decoder has two pipeline stages, with one stage implementing syndrome computation and the second stage implementing error locator polynomial evaluation, error location and error correction. Since the second pipeline stage performs several tasks, these tasks can share resources with each other, resulting in a compact implementation. In addition, we present a technique that can be used to compute the level of parallelism required of two key algorithmic components (syndrome computation, error location) so that the RS decoder can handle inputs of variable rates, with minimal latency and resource consumption. We show that low latency, in itself, is an important consideration for RS decoders, and can lead to reduced buffering, resulting in significant hardware savings.

摘要翻译： 公开了一种方法和装置，以实现资源优化的一类RS解码器，其具有平衡流水线级和并行算法组件。 我们的RS解码器有两个流水线阶段，一个阶段执行校正子计算，第二个阶段实现错误定位器多项式评估，错误定位和纠错。 由于第二流水线阶段执行若干任务，这些任务可以彼此共享资源，从而实现紧凑的实现。 此外，我们提出了一种可以用于计算两个关键算法组件（校正子计算，错误定位）所需的并行级别的技术，以便RS解码器可以处理可变速率的输入，以最小的延迟和资源消耗。 我们表明，低延迟本身是RS解码器的重要考虑因素，可以减少缓冲，从而节省大量的硬件。

公开(公告)号：US07009210B2

公开(公告)日：2006-03-07

申请号：US09852582

申请日：2001-05-09

申请人： Jithamithra Sarathy ,  Chinnabbu Ekambaram ,  David Lidsky ,  Bharat Dave ,  Boris Stefanov ,  Tan B. Thai ,  Ronald Simprini ,  Julio Martinez ,  Gaurav Naik

发明人： Jithamithra Sarathy ,  Chinnabbu Ekambaram ,  David Lidsky ,  Bharat Dave ,  Boris Stefanov ,  Tan B. Thai ,  Ronald Simprini ,  Julio Martinez ,  Gaurav Naik

IPC分类号： H01L27/15 ,  H01L33/00

CPC分类号： H01L31/101 ,  H01L31/02327 ,  H04B10/07953 ,  H04B10/07955

摘要： A method and apparatus for a tunable optical spectrum analyzer that can measure the optical spectrum of a demultiplexed DWDM signal are presented. The signal level and Optical Signal to Noise Ratio (OSNR) of an individual channel of the DWDM signal can be obtained from the measured optical spectrum. The device employs a rapid tuning and detection technique to obtain the optical spectrum of the incoming signal. In a preferred embodiment the apparatus is fabricated on a single chip resulting in a compact measurement device. Using the device of the preferred embodiment, single channel OSNR can be determined in as small a time interval as approximately 225 microseconds. Using an array of these devices an entire DWDM mixed signal can be monitored as to OP and OSNR in the same time interval.

公开(公告)号：US07924498B2

公开(公告)日：2011-04-12

申请号：US12043496

申请日：2008-03-06

申请人： Hongsheng Wang

发明人： Hongsheng Wang

IPC分类号： H01S5/00 ,  G02F1/35 ,  G02F3/00 ,  H04B10/12

CPC分类号： G02F1/3519

摘要： An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD.

摘要翻译： 描述了可以包括提供输出信号的SOA-MZI电路的光学电路; 以及被配置为接收SOA-MZI的输出信号并且在PFD的输出处提供至少一个信号的偏振滤波器件（PFD）。

公开(公告)号：US07239768B2

公开(公告)日：2007-07-03

申请号：US11142924

申请日：2005-06-02

申请人： Ganesh Lakshminarayana ,  Jithamithra Sarathy ,  Boris Stefanov

发明人： Ganesh Lakshminarayana ,  Jithamithra Sarathy ,  Boris Stefanov

IPC分类号： G02B6/26 ,  G02F1/01

CPC分类号： H04B10/299 ,  G02B6/12007 ,  G02F1/3517 ,  G02F2001/217 ,  G02F2002/006

摘要： A integrated optical circuit comprises an interferometer having a first optical path and a second optical path configured for regenerating an input signal entering the first path by interference at a first coupler between continuous wave (CW) signals from the two optical paths, and a third optical path configured such that a canceling signal passing therethrough cancels, at a second coupler, a traveling signal from the first arm. When the device is operated in a counter-propagative mode, the traveling signal is the CW signal from the first arm. When the device is operated in a co-propagative mode, the traveling signal is the input signal from the first arm.

摘要翻译： 集成光电路包括具有第一光路和第二光路的干涉仪，其被配置用于通过来自两个光路的连续波（CW）信号之间的第一耦合器处的干扰再现进入第一路径的输入信号，以及第三光路 路径被配置为使得通过的抵消信号在第二耦合器处抵消来自第一臂的行进信号。 当设备以反向传播模式操作时，行进信号是来自第一臂的CW信号。 当设备以共同传播模式操作时，行进信号是来自第一臂的输入信号。