公开(公告)号：US20050180749A1

公开(公告)日：2005-08-18

申请号：US10981572

申请日：2004-11-05

Applicant: Bikash Koley ,  Si-Hyung Cho

Inventor： Bikash Koley ,  Si-Hyung Cho

IPC: H04J14/00 ,  H04J14/02 ,  H04Q11/00

CPC classification number: H04J14/0294 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0283 ,  H04J14/0284 ,  H04Q11/0066 ,  H04Q2011/0081

Abstract: A system and method is provided for operating a node in an optical Ethernet network system, comprising: generating optical signals of at least one wavelength corresponding to the node; transmitting the optical signals on each of the first and second optical fiber paths; receiving optical signals of the at least one wavelength, either directly or indirectly, from the first and second optical fiber paths; and selectively choosing signals from, either directly or indirectly, either the first or second optical fiber paths depending on the optical signals received from the first or second optical fiber path.

Abstract translation: 提供了一种用于操作光以太网网络系统中的节点的系统和方法，包括：产生对应于该节点的至少一个波长的光信号; 在所述第一和第二光纤路径中的每一个上传送光信号; 从所述第一和第二光纤路径直接或间接接收所述至少一个波长的光信号; 以及根据从第一或第二光纤路径接收的光信号，直接或间接选择第一或第二光纤路径的信号。

公开(公告)号：US09184845B1

公开(公告)日：2015-11-10

申请号：US13846749

申请日：2013-03-18

Applicant: Amin Vahdat ,  Xiaoxue Zhao ,  Paul Germano ,  Bikash Koley ,  Hong Liu

Inventor： Amin Vahdat ,  Xiaoxue Zhao ,  Paul Germano ,  Bikash Koley ,  Hong Liu

IPC: H04B10/27

CPC classification number: H04B10/27 ,  H04Q11/0005 ,  H04Q11/0071 ,  H04Q2011/0052 ,  H04Q2011/0083 ,  H04Q2213/1301

Abstract: A system and method of providing a dynamic optical network topology according to topology determinations made by a network control is disclosed. The system and method includes optical ports on an optical circuit switch system operably connected to a plurality of server groups, and optical ports on the optical circuit switch system operably connected to a plurality of packet processing nodes. The system and method also includes at least one memory and at least one processor to execute network control software to receive input comprising a bandwidth request, determine an output comprising a preferred optical link topology for the optical circuit switch system based on the received input, convert the optical link topology for the optical circuit switch system into optical circuit switch port mapping, and send the optical circuit switch port mapping to the optical circuit switch system and to the packet processing nodes.

Abstract translation: 公开了根据由网络控制进行的拓扑确定提供动态光网络拓扑的系统和方法。 该系统和方法包括可操作地连接到多个服务器组的光学电路交换系统上的光学端口和可操作地连接到多个分组处理节点的光学电路交换系统上的光学端口。 该系统和方法还包括至少一个存储器和至少一个处理器，用于执行网络控制软件以接收包括带宽请求的输入，基于所接收的输入确定包括用于光电路交换系统的优选光链路拓扑的输出，转换 将光电开关系统的光链路拓扑转换成光电路交换机端口映射，并将光电路交换机端口映射发送给光电路交换系统和分组处理节点。

公开(公告)号：US08792787B1

公开(公告)日：2014-07-29

申请号：US13552774

申请日：2012-07-19

Applicant: Xiaoxue Zhao ,  Bikash Koley ,  Vijay Vusirikala ,  Edward Crabbe ,  Paul Phillip Germano ,  Hong Liu ,  Philip Michael Wells

Inventor： Xiaoxue Zhao ,  Bikash Koley ,  Vijay Vusirikala ,  Edward Crabbe ,  Paul Phillip Germano ,  Hong Liu ,  Philip Michael Wells

IPC: H04J14/00

CPC classification number: H04Q11/0005 ,  H04B10/2575 ,  H04Q2011/0013 ,  H04Q2011/0032 ,  H04Q2011/0039 ,  H04Q2011/006

Abstract: A packet switch/router including a first stage switch fabric receiving an electrical signal, a mid-stage buffer receiving and storing the electrical signal from the first stage switch fabric, and a second stage switch fabric receiving the electrical signal from the mid-stage buffer. Each switch fabric includes N layers of N×N arrayed waveguide gratings (AWGs), and each AWG has ingress ports and egress ports. A wavelength tunable device, such as a tunable laser, communicates with a source ingress port of an AWG and converts the received electrical signal to an optical signal having a wavelength selected for routing a packet from the source ingress port to a target egress port of the arrayed waveguide grating. A photoreceiver, such as a burst-mode photoreceiver, receives the propagated optical signal from the target egress port and converts the optical signal to the electrical signal.

Abstract translation: 包括接收电信号的第一级交换结构的分组交换机/路由器，接收并存储来自第一级交换结构的电信号的中间缓冲器以及从中间级缓冲器接收电信号的第二级交换机结构 。 每个交换结构包括N层N×N阵列波导光栅（AWG），每个AWG具有入口端口和出口端口。 诸如可调激光器的波长可调设备与AWG的源入口端口进行通信，并将接收到的电信号转换为具有选择的波长的光信号，以将数据包从源入口端口路由到目标出口端口 阵列波导光栅。 诸如突发模式光接收器的光接收器从目标出口接收传播的光信号，并将光信号转换为电信号。

公开(公告)号：US08712251B2

公开(公告)日：2014-04-29

申请号：US13089437

申请日：2011-04-19

Applicant: Bikash Koley ,  Vijayanand Vusirikala ,  Hong Liu

Inventor： Bikash Koley ,  Vijayanand Vusirikala ,  Hong Liu

IPC: H04B10/04

CPC classification number: H04Q11/0005 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/5161 ,  H04B10/541 ,  H04B10/5561 ,  H04J3/04 ,  H04J3/0602 ,  H04J3/0685 ,  H04J14/0279 ,  H04J14/0298 ,  H04J14/06 ,  H04L27/34 ,  H04L27/36 ,  H04Q2011/0045 ,  H04Q2213/13361

Abstract: Aspects of the invention provide transmitters and receivers for managing multiple optical signals. High order modulation, such as phase and/or amplitude modulation, is used to achieve multiple bits per symbol by transporting multiple asynchronous data streams in an optical transport system. One or more supplemental multiplexing techniques such as time division multiplexing, polarization multiplexing and sub-carrier multiplexing may be used in conjunction with the high order modulation processing. This may be done in various combinations to realize a highly spectrally efficient multi-data stream transport mechanism. The system receives a number of asynchronous signals which are unframed and synchronized, and then reframed and tagged prior to the high order modulation. Differential encoding may also be performed. Upon reception of the multiplexed optical signal, the receiver circuitry may employ either direct detection without a local oscillator or coherent detection with a local oscillator.

公开(公告)号：US07330666B1

公开(公告)日：2008-02-12

申请号：US10355585

申请日：2003-01-31

Applicant: Bikash Koley

Inventor： Bikash Koley

IPC: H04B10/04

CPC classification number: H04B10/5051 ,  H04B10/505 ,  H04B10/5057 ,  H04B10/50577 ,  H04B10/508

Abstract: A method of controlling phase alignment in a modulator of a transmitter in an optical communications system uses a narrowband optical filter to monitor changes in power spectral density of a modulated output at and around the optical carrier frequency. In one embodiment, a method controls alignment of a carrier-suppressed-return-to-zero (CSRZ) pulse train in accordance with changes in the power spectral density of the CSRZ modulated optical signal at and around the optical carrier frequency and generates phase adjustment control signals by executing a phase-control loop to maintain the power spectral density of the CSRZ modulated output at the optical carrier frequency at a desired level.

Abstract translation: 控制光通信系统中的发射机的调制器中的相位对准的方法使用窄带滤光器来监测光载波频率处和周围的调制输出的功率谱密度的变化。 在一个实施例中，一种方法根据光载波频率处和周围的CSRZ调制光信号的功率谱密度的变化来控制载波抑制归零（CSRZ）脉冲串的对准，并产生相位调整 通过执行相位控制回路来控制信号，以将光载波频率处的CSRZ调制输出的功率谱密度维持在期望的水平。