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。

公开(公告)号：US06339496B1

公开(公告)日：2002-01-15

申请号：US09599428

申请日：2000-06-22

Applicant: Bikash Koley ,  Mario Dagenais

Inventor： Bikash Koley ,  Mario Dagenais

IPC: H01S30933

CPC classification number: H01S5/50 ,  H01S5/0207 ,  H01S5/18311 ,  H01S5/1833 ,  H01S5/423

Abstract: A cavity-less vertical semiconductor optical amplifier is provided which includes an active region of an intrinsic bulk semiconductor material sandwiched between p- and n-layers of semiconductor materials in which a vertical gain channel of a predetermined confined cross-sectional configuration is formed to constitute an amplification region of the optical amplifier. The amplification region is sandwiched between layers of p- and n-doped layers of linearly graded semiconductor material supplying holes and electrons to the active region upon switching “ON” of the optical amplifier. Several factors contribute to substantial amplification of an optical signal at a relatively low injection current which include a relatively long active region allowing sufficient single pass gain as well as a strictly confined cross-sectional configuration of the vertical gain channel which reduces the active volume of the amplification region resulting in substantially high gain at a relatively low current. Flattening of the conduction band and valence band profiles allows easy access of the holes and electrons into the active region. The cavity-less vertical semiconductor optical amplifier of the present invention is intended for multidimensional architectural structures for high speed communication.

Abstract translation: 提供了一种无空腔垂直半导体光放大器，其包括夹在半导体材料的p层和n层之间的本征体半导体材料的有源区，其中形成预定的限定横截面构造的垂直增益沟道以构成 光放大器的放大区域。 当光放大器“ON”时，放大区夹在线性梯度半导体材料的p型和n型掺杂层之间，向有源区提供空穴和电子。 几个因素有助于在相对较低的注入电流下实质地放大光学信号，其包括允许足够的单程增益的相对长的有源区以及垂直增益通道的严格限定的横截面配置，其减小了 放大区域在相对低的电流下导致基本上高的增益。 导带和价带分布的平坦化使得孔和电子容易接近有源区域。 本发明的无腔垂直半导体光放大器旨在用于高速通信的多维架构结构。