公开(公告)号：US20110150502A1

公开(公告)日：2011-06-23

申请号：US12561947

申请日：2009-09-17

申请人： Xiaoxue Zhao ,  Erwin K. Lau ,  Ming C. Wu ,  Connie Chang-Hasnain ,  Hyuk-Kee Sung ,  Devang Parekh

发明人： Xiaoxue Zhao ,  Erwin K. Lau ,  Ming C. Wu ,  Connie Chang-Hasnain ,  Hyuk-Kee Sung ,  Devang Parekh

IPC分类号： H04B10/04

CPC分类号： H01S5/4006 ,  H01S5/06226 ,  H01S5/065 ,  H01S5/12 ,  H01S5/183 ,  H01S5/426

摘要： Apparatus and method for increasing optical transmission bandwidth in response to chaining, in cascade, one or more slave lasers onto a master laser. Each laser is configured for optical injection locking (OIL) and each slave laser is locked onto the master laser. The first and each subsequent slave laser are detuned to tailor frequency characteristics of apparatus output. The transmitter can be scaled up by cascading additional injection-locked lasers together. The invention supports multiple compatible modulation formats, such as amplitude modulation (AM), phase modulation (PM), and frequency modulation (FM), for tailoring the output to the application of interest, while any type of laser can be used for the master and slave lasers.

摘要翻译： 响应于将级联的一个或多个从属激光器链接到主激光器上来增加光传输带宽的装置和方法。 每个激光器配置为光学注入锁定（OIL），每个从属激光器锁定在主激光器上。 第一个和每个随后的从属激光器失谐以调整装置输出的频率特性。 可以通过将附加的注入锁定激光器级联在一起来扩展发射器。 本发明支持多种兼容调制格式，例如幅度调制（AM），相位调制（PM）和频率调制（FM），用于将输出定制到感兴趣的应用，而任何类型的激光器都可以用于主机 和从属激光器。

公开(公告)号：US20120076161A1

公开(公告)日：2012-03-29

申请号：US13234080

申请日：2011-09-15

申请人： Connie Chang-Hasnain ,  Devang Parekh ,  Xiaoxue Zhao ,  Peng Guo ,  Weijian Yang

发明人： Connie Chang-Hasnain ,  Devang Parekh ,  Xiaoxue Zhao ,  Peng Guo ,  Weijian Yang

IPC分类号： H01S3/13

CPC分类号： H01S5/4006 ,  H01S3/06758 ,  H01S5/0035 ,  H01S5/06216 ,  H01S5/06226 ,  H01S5/12 ,  H01S5/183 ,  H01S5/3095 ,  H04B10/504

摘要： Adjustable chirp is achieved in injection-locked, 10-Gb/s directly modulated, multimode 1.55-μm VCSELs for the first time, leading to 90× increase in standard single-mode fiber transmission distance to 90 km.

摘要翻译： 首次在注入锁定的10 Gb / s直接调制多模1.55-μmVCSEL中实现可调啁啾，导致标准单模光纤传输距离提高90倍。

公开(公告)号：US20090074019A1

公开(公告)日：2009-03-19

申请号：US12204215

申请日：2008-09-04

申请人： Elaine Wong ,  Connie Chang-Hasnain ,  Xiaoxue Zhao

发明人： Elaine Wong ,  Connie Chang-Hasnain ,  Xiaoxue Zhao

IPC分类号： H01S5/183 ,  H01S5/06

CPC分类号： H01S5/183 ,  H01S5/12 ,  H01S5/4006 ,  H01S5/4025

摘要： Low cost implementation of broadband upstream transmission for local and access network applications is made possible through the use of modulated downstream signals in a wavelength division multiplexed (WDM) passive optical network (PON) to injection-lock vertical-cavity surface-emitting lasers (VCSELs) for operation as stable, uncooled, and directly-modulated upstream transmitters. By way of example and not limitation, an optical network unit comprises: downstream input, photoreceiver, tunable laser, upstream output, and means for directionally coupling the downstream input into the tunable laser for modulating the output wavelength which is coupled to the upstream output.

摘要翻译： 通过使用波分多路复用（WDM）无源光网络（PON）中的调制下行信号来注入锁定垂直腔表面发射激光器（VCSELs），实现用于本地和接入网络应用的宽带上行传输的低成本实现成为可能 ）作为稳定，非冷却和直接调制的上行发射器进行操作。 作为示例而非限制，光网络单元包括：下游输入，光接收器，可调谐激光器，上游输出端和用于将下游输入端方向耦合到可调激光器中的装置，用于调制耦合到上游输出端的输出波长。

公开(公告)号：US08676004B1

公开(公告)日：2014-03-18

申请号：US13402855

申请日：2012-02-22

申请人： Ryohei Urata ,  Leon Poutievski ,  Amin Vahdat ,  Hong Liu ,  Xiaoxue Zhao ,  Cedric Fung Lam

发明人： Ryohei Urata ,  Leon Poutievski ,  Amin Vahdat ,  Hong Liu ,  Xiaoxue Zhao ,  Cedric Fung Lam

IPC分类号： G02B6/24

CPC分类号： H04Q11/0005 ,  H04Q2011/0035

摘要： Systems and methods for optimizing port usage in an optical circuit switch are disclosed herein. A plurality of optical circulators can be coupled to the plurality of input and output ports of an optical circuit switch. An optical circulator coupled to an input port and an optical circulator coupled to an output port can form a bidirectional pair capable of communicating with any other bidirectional pair of the optical circuit switch. In this regard, the number of bidirectional ports of an optical circuit switch can be increased allowing additional bandwidth to flow through the optical circuit switch. Increasing the efficiency and capabilities of optical circuit switches within a large scale communications network can offer increased functionality and performance with little trade off.

摘要翻译： 本文公开了用于优化光电开关中的端口使用的系统和方法。 多个光循环器可以耦合到光电开关的多个输入和输出端口。 耦合到输入端口的光循环器和耦合到输出端口的光循环器可以形成能够与光电路开关的任何其它双向对通信的双向对。 在这方面，可以增加光学电路开关的双向端口的数量，允许额外的带宽流过光电开关。 在大规模通信网络中提高光电开关的效率和能力可以提供更多的功能和性能，几乎没有什么折衷。

公开(公告)号：US09225454B1

公开(公告)日：2015-12-29

申请号：US13282229

申请日：2011-10-26

申请人： Hong Liu ,  Amin Vahdat ,  Ryohei Urata ,  Xiaoxue Zhao ,  Chris Johnson

发明人： Hong Liu ,  Amin Vahdat ,  Ryohei Urata ,  Xiaoxue Zhao ,  Chris Johnson

IPC分类号： H04J14/02

CPC分类号： H04J14/02

摘要： The specification describes an apparatus including a plurality of communication ports, each communication port coupled to a corresponding networking element, and a plurality of optical transceivers, each optical transceiver coupled to a corresponding communication port and including an optical receiver and an optical transmitter, wherein the optical transmitter can transmit an optical data signal having a carrier wavelength different than any other of the plurality of optical transmitters. A passive optical multiplexer/demultiplexer module is coupled to the transceivers and includes an optical multiplexer including a wavelength division multiplexing (WDM) output and a plurality of inputs, each input coupled to one of the plurality of transmitters, and an optical demultiplexer including a WDM input and a plurality of outputs, each output coupled to one of the plurality of receivers. Placing the passive optical multiplexer and demultiplexer external to the optical transceivers creates an aggregation/de-aggregation point with extremely low fault probability.

摘要翻译： 本说明书描述了一种包括多个通信端口，耦合到对应的网络元件的每个通信端口和多个光收发器的设备，每个光收发器耦合到对应的通信端口并且包括光接收器和光发射器，其中， 光发射机可以发射具有不同于多个光发射机中任何其它的载波波长的光数据信号。 无源光复用器/解复用器模块耦合到收发器，并且包括光复用器，其包括波分多路复用（WDM）输出和多个输入，每个输入耦合到所述多个发射机之一，以及光解复用器，包括WDM 输入和多个输出，每个输出耦合到所述多个接收器中的一个。 将无源光复用器和解复用器放置在光收发器外部，创建具有极低故障概率的聚合/解聚合点。

公开(公告)号：US08867915B1

公开(公告)日：2014-10-21

申请号：US13342784

申请日：2012-01-03

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

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

IPC分类号： H04J14/00

CPC分类号： H04B10/27 ,  H04Q11/0005 ,  H04Q11/0071 ,  H04Q2011/0052 ,  H04Q2011/0083 ,  H04Q2213/1301

摘要： 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.

摘要翻译： 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：US09184845B1

公开(公告)日：2015-11-10

申请号：US13846749

申请日：2013-03-18

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

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

IPC分类号： H04B10/27

CPC分类号： H04B10/27 ,  H04Q11/0005 ,  H04Q11/0071 ,  H04Q2011/0052 ,  H04Q2011/0083 ,  H04Q2213/1301

摘要： 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.

摘要翻译： 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

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

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

IPC分类号： H04J14/00

CPC分类号： H04Q11/0005 ,  H04B10/2575 ,  H04Q2011/0013 ,  H04Q2011/0032 ,  H04Q2011/0039 ,  H04Q2011/006

摘要： 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.

摘要翻译： 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。