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    • 1. 发明授权
    • System and method for laser wavelength control
    • 用于激光波长控制的系统和方法
    • US08351473B1
    • 2013-01-08
    • US12626791
    • 2009-11-27
    • Thomas E. DarcieNeil BarakatJinye Zhang
    • Thomas E. DarcieNeil BarakatJinye Zhang
    • H01S3/10
    • H01S5/0687
    • Disclosed are systems and methods for improving wavelength control in tunable laser sources. Embodiments of the systems and methods include delivering a fraction of the light output from the laser to an optical filter subsystem. The optical filter subsystem is capable of outputting at least one filter response signal, and comprises 2 complementary optical etalon filters with nominally identical free spectral ranges but offset by nominally one third of the free spectral range. The filter response signal is processed in a control unit which executes a control algorithm to generate a tuning signal that is used to control the wavelength of the laser.
    • 公开了用于改善可调谐激光源中的波长控制的系统和方法。 系统和方法的实施例包括将从激光器输出的光的一部分传送到光学滤波器子系统。 滤光器子系统能够输出至少一个滤波器响应信号,并且包括具有标称相同的自由光谱范围的2个互补的光学标准具滤波器,但是通过名义上的三分之一的自由光谱范围偏移。 滤波器响应信号在执行控制算法的控制单元中进行处理,以产生用于控制激光波长的调谐信号。
    • 2. 发明授权
    • Extended broadband passive optical networks
    • 扩展宽带无源光网络
    • US08335432B1
    • 2012-12-18
    • US12419990
    • 2009-04-07
    • Thomas E. DarcieNeil Barakat
    • Thomas E. DarcieNeil Barakat
    • H04J14/00H04B10/00
    • H04J14/0257H04J14/0212H04J14/0252H04J14/0282H04J14/0283H04J14/0286
    • Optical networks interconnect a plurality of optical network units (ONUs) to an optical line terminal (OLT). The OLT comprises a plurality of optical transceivers that are wavelength division multiplexed and connected to a WDM metro network. The metro network is configured to facilitate communication of a plurality of wavelengths between the OLT and local nodes, the local nodes including a wavelength sharing network configured to connect at least one of the wavelengths communicated with the OLT to a plurality of feeder fibers. The feeder fibers connect the wavelength sharing network to remote nodes that comprise WDM devices that have pluralities of output ports. An optical combiner allows the first and second ONUs to share the same transceiver in the OLT.
    • 光网络将多个光网络单元(ONU)互连到光线路终端(OLT)。 OLT包括波分复用并连接到WDM城域网的多个光收发器。 城域网被配置为促进OLT和本地节点之间的多个波长的通信,本地节点包括被配置为将与OLT通信的至少一个波长连接到多个馈线光纤的波长共享网络。 馈线光纤将波长共享网络连接到包含具有多个输出端口的WDM设备的远程节点。 光合并器允许第一和第二ONU在OLT中共享相同的收发器。
    • 3. 发明申请
    • SYSTEM AND METHOD FOR STREAMED-MEDIA DISTRIBUTION USING A MULTICAST, PEER-TO- PEER NETWORK
    • 使用多媒体,对等网络的流媒体分发的系统和方法
    • US20090077254A1
    • 2009-03-19
    • US12211015
    • 2008-09-15
    • Thomas DarcieNeil Barakat
    • Thomas DarcieNeil Barakat
    • G06F15/16
    • H04L67/104H04L65/4076H04L65/4084H04L67/108H04L67/1091H04N21/4788H04N21/6405
    • In one embodiment, a system for streamed-media distribution comprises a first media stream received at a streaming server, at least a first and a second client in communication with the streaming server, first and second sub-stream packet streams created from the first media stream at the streaming server, and received by first and second clients, respectively, a first peer-relay list, transmitted from the streaming server and received by the first client, wherein the first peer-relay list includes forwarding information for the first client, a third sub-stream packet stream, forwarded from the first client and received at the second client, wherein the third-sub-stream packet stream is substantially the same as the first sub-stream packet stream, and a notification, transmitted by the second client to the streaming server, if any of the packets in the third sub-stream packet stream are not received in a timely manner from the first client.
    • 在一个实施例中,用于流媒体分发的系统包括在流服务器处接收的第一媒体流,与流服务器通信的至少第一和第二客户端,从第一媒体创建的第一和第二子流分组流 流,并且由第一和第二客户端分别接收从流传输服务器发送并由第一客户端接收的第一对等中继列表,其中第一对等中继列表包括用于第一客户端的转发信息, 第三子流分组流,从第一客户端转发并在第二客户端处接收,其中第三子流分组流与第一子流分组流基本相同,并且由第二子流分组流传送的通知 如果没有从第一客户端及时接收到第三子流分组流中的任何分组,则客户端到流服务器。