公开(公告)号：US08417125B2

公开(公告)日：2013-04-09

申请号：US12789679

申请日：2010-05-28

申请人： Naresh Chand ,  Bruce Eteson ,  Daniel Taskalos

发明人： Naresh Chand ,  Bruce Eteson ,  Daniel Taskalos

IPC分类号： H04B10/00

CPC分类号： H04B10/1123

摘要： Methods, systems and other embodiments associated with a laser communication system using a single wavelength are presented. A first data is modulated onto an RF carrier to produce a modulated RF carrier. A laser is intensity modulated using with the modulated RF carrier. The intensity modulated laser beam is transmitted from an interrogator to a modulating retro-reflector (MRR) terminal. A portion of the laser beam is received at a receiver at the MRR terminal. Another portion of the laser is modulated at the MRR terminal with a second data to produce a re-modulated laser beam. The re-modulated laser beam is reflected back to the interrogator.

摘要翻译： 提出了与使用单个波长的激光通信系统相关联的方法，系统和其他实施例。 将第一数据调制到RF载波上以产生调制的RF载波。 使用调制的RF载波对激光进行强度调制。 强度调制激光束从询问器传输到调制后向反射器（MRR）终端。 在MRR端子处的接收器处接收激光束的一部分。 激光器的另一部分在MRR端子处用第二数据进行调制以产生再调制的激光束。 再调制的激光束被反射回询问器。

公开(公告)号：US08032032B2

公开(公告)日：2011-10-04

申请号：US12291970

申请日：2008-11-14

申请人： Naresh Chand ,  Kevin M. McNeill

发明人： Naresh Chand ,  Kevin M. McNeill

IPC分类号： H04B10/00

CPC分类号： H04B10/27 ,  H04B10/2503 ,  H04B10/2587 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0267 ,  H04J14/0268 ,  H04J14/0276 ,  H04J14/0282 ,  H04J14/0295 ,  H04J14/0297 ,  H04J14/0298 ,  H04J2014/0253 ,  H04Q11/0062 ,  H04Q2011/009

摘要： A fiber optic link for platforms with data sources including, e.g., sensors, cameras, radars and antennas. An array of optical transmitter/receiver pairs is coupled to an integrating network of the platform. Data modules are each coupled to certain ones of the data sources and include a receiver for detecting control data, and a modulator for modulating a light signal according to signals from the module's data sources. At least one optical fiber is coupled between a given transmitter/receiver pair of the array, and a corresponding data module. A laser source associated with each transmitter supplies a light signal with the control data to a corresponding data module downstream over an optical fiber. The light signal is modulated by the signals from the module's data sources, and the modulated light signal is returned to an array receiver upstream over an optical fiber.

摘要翻译： 具有数据源的平台的光纤链路，包括例如传感器，照相机，雷达和天线。 一组光发射机/接收机对耦合到该平台的集成网络。 数据模块各自耦合到某些数据源，并且包括用于检测控制数据的接收器，以及用于根据来自模块数据源的信号调制光信号的调制器。 至少一个光纤耦合在阵列的给定发射机/接收机对与相应的数据模块之间。 与每个发射器相关联的激光源将控制数据的光信号提供给光纤上的相应数据模块。 光信号由来自模块数据源的信号调制，调制光信号通过光纤返回到阵列接收器上游。

公开(公告)号：US20070153772A1

公开(公告)日：2007-07-05

申请号：US11327532

申请日：2006-01-05

申请人： Shiva Shankar J ,  Ottalingam Satyanarayan ,  Srinivas Muktevi ,  Naresh Chand

发明人： Shiva Shankar J ,  Ottalingam Satyanarayan ,  Srinivas Muktevi ,  Naresh Chand

IPC分类号： H04L12/66

CPC分类号： H04L65/80 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/0858 ,  H04L43/087 ,  H04L43/106 ,  H04L43/12

摘要： A method, system and apparatus are provided for measuring the quality of voice (QOV) in a communication network. A time-stamped voice data packet is received. The time stamped on the voice data packet indicates the time at which the voice data packet arrives at intermediate devices. In an embodiment of the invention, the intermediate devices at each hop stamp the time. Thereafter, the voice data packets are analyzed to measure the quality of voice in the communication network.

摘要翻译： 提供了一种用于测量通信网络中的语音质量（QOV）的方法，系统和装置。 接收时间戳的语音数据分组。 语音数据分组上的时间戳表示语音数据分组到达中间设备的时间。 在本发明的一个实施例中，每一跳的中间装置标记时间。 此后，分析语音数据分组以测量通信网络中的语音质量。

公开(公告)号：US4977103A

公开(公告)日：1990-12-11

申请号：US398115

申请日：1989-08-24

申请人： Naresh Chand

发明人： Naresh Chand

IPC分类号： H01L21/203 ,  C30B23/02 ,  C30B23/06 ,  C30B23/08

CPC分类号： C30B23/02 ,  C30B23/066 ,  Y10S148/024 ,  Y10S148/097 ,  Y10S148/169

摘要： The presence of oval defects on MBE-grown compound semiconductor (e.g., GaAs, InP, or InGaAs) epitaxial layers has proven to be a serious obstacle to the use of such material for the manufacture of integrated circuits (ICs), even though the use of such material potentially could result in ICs having superior performance. One particularly prevalent type of oval defect is generally referred to as .alpha.-type. It has now been discovered that compound semiconductor epitaxial layers that are essentially free of .alpha.-type oval defects can be grown by MBE if first at least a portion of the Ga and/or In metal crucible is coated with an appropriate second metal. The second metal is chosen from the group of metals that are wetted by the first metal and that are less electronegative than the first metal. Aluminum is a currently preferred second metal. Advantageously the interior of the (typically pBN) crucible is Al-coated at least at and near the orifice of the crucible, whereby formation of drops of first metal is prevented.