公开(公告)号：US07373089B2

公开(公告)日：2008-05-13

申请号：US10215460

申请日：2002-08-09

申请人： Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

发明人： Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/25137

摘要： Methods and apparatus for providing improving optical signal transmission results over standard mode fiber using a combination of negative chirp, low extinction ratio, and self-phase modulation transmission techniques in combination are described. The use of pre-transmission signal distortion in combinations with one or more of the other transmission techniques is also described. Pre-transmission signal distortion may be introduced by controlling a modulator with a large symmetric AC signal which causes the modulator to operation in a non-linear region or, alternatively, by using a relatively small non-symmetric AC signal to drive the modulator. Use of the small non-symmetric signal has the advantage of reduced power requirements. The pre-transmission distortion acts to counter some of the distortion introduced by the transmission of the signal over an optic fiber.

摘要翻译： 描述了结合使用负啁啾，低消光比和自相位调制传输技术的组合的标准模式光纤提供改进的光信号传输结果的方法和装置。 还描述了与一种或多种其它传输技术组合使用预发射信号失真。 可以通过控制具有大对称AC信号的调制器来引入预发送信号失真，其使得调制器在非线性区域中操作，或者通过使用相对较小的非对称AC信号来驱动调制器。 使用小的非对称信号具有减少功率要求的优点。 预发射失真用于抵消通过光纤传输信号引入的一些失真。

公开(公告)号：US07068936B2

公开(公告)日：2006-06-27

申请号：US10161335

申请日：2002-06-03

申请人： Stanley Pau ,  Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

发明人： Stanley Pau ,  Jianjun Yu ,  Keisuke Kojima ,  Naresh Chand

IPC分类号： H04J14/00

CPC分类号： H04J14/086 ,  H04J14/02 ,  H04J14/08 ,  H04Q11/0005 ,  H04Q2011/0011 ,  H04Q2011/0016 ,  H04Q2011/002 ,  H04Q2011/0024 ,  H04Q2011/0033 ,  H04Q2011/0045

摘要： Methods and apparatus for providing a time slot switch which performs switching in the optical domain without the need for O-E-O conversion is described. The time slot switching device of the present invention may be part of a large switching device capable of performing switching and other function on WDM, TDM and WDM signals which are time division multiplexed. An optical time slot switch implemented using a time slot demultiplexer, optical cross-connect, variable delay lines and time slot multiplexer are described. Frequency conversion may be performed on a per time slot basis in cases where time slot signals are switched between lines using different wavelengths. Wave division demultiplexers and multiplexers can be added to the basic time slot switch to provide support for WDM switching and switching of TDM signals which are transmitted using wave division multiplexing.

摘要翻译： 描述了提供在光域中进行切换而不需要O-E-O转换的时隙切换的方法和装置。 本发明的时隙切换装置可以是对时分复用的WDM，TDM和WDM信号进行切换等功能的大型交换装置的一部分。 描述了使用时隙解复用器，光交叉连接，可变延迟线和时隙多路复用器实现的光时隙交换机。 在使用不同波长的线路之间切换时隙信号的情况下，可以在每个时隙的基础上执行频率转换。 波分复用器和多路复用器可以添加到基本时隙交换机中，以支持使用波分复用传输的TDM信号的WDM交换和交换。

公开(公告)号：US08450325B2

公开(公告)日：2013-05-28

申请号：US13158791

申请日：2011-06-13

申请人： Arthur M. Brown ,  Naresh Chand

发明人： Arthur M. Brown ,  Naresh Chand

IPC分类号： A61K31/4965

CPC分类号： A61K31/495

摘要： Disclosed are methods of preventing or treating cardiac arrhythmia comprising administering to a mammal in need thereof, such as a human, an effective amount of vanoxerine (GBR 12909) or a pharmaceutically acceptable salt, derivative or metabolite thereof.

摘要翻译： 公开了预防或治疗心律失常的方法，其包括向有需要的哺乳动物（例如人）施用有效量的vanoxerine（GBR 12909）或其药学上可接受的盐，衍生物或代谢物。

公开(公告)号：US5399880A

公开(公告)日：1995-03-21

申请号：US104969

申请日：1993-08-10

申请人： Naresh Chand

发明人： Naresh Chand

IPC分类号： H01L31/0352 ,  H01L31/11 ,  H01L27/14 ,  H01L31/00

CPC分类号： B82Y20/00 ,  H01L31/035254 ,  H01L31/1105

摘要： A long wavelength (6 to 20 .mu.m) phototransistor is described which has n-doped silicon as emitter and collector regions bracketing a base region having a quantum well structure made up of alternating layers of p-doped silicon germanium and undoped silicon, The silicon germanium layer adjacent to the emitter region is thicker and has a higher percentage of germanium in order to provide a quantum well that is wider and deeper than the other quantum wells in the base region thereby resulting in a larger current and optical gain. The silicon barrier layer of the quantum well closest to the collector region is p-doped in order to reduce the leakage current of the base-collector junction.

摘要翻译： 描述了长波长（6至20μm）的光电晶体管，其具有作为发射极的n掺杂硅，并且收集器区域包围具有由p掺杂硅锗和未掺杂硅的交替层组成的量子阱结构的基极区域。硅 与发射极区相邻的锗层较厚并且具有较高百分比的锗，以便提供比基极区域中的其它量子阱更宽更深的量子阱，从而导致更大的电流和光学增益。 最接近集电极区域的量子阱的硅势垒层是p掺杂的，以便减小基极 - 集电极结的漏电流。

公开(公告)号：US20110087879A1

公开(公告)日：2011-04-14

申请号：US12587743

申请日：2009-10-13

申请人： Naresh Chand ,  Bruce M. Eteson

发明人： Naresh Chand ,  Bruce M. Eteson

IPC分类号： H04L9/00 ,  H04K1/00 ,  H04L12/56

CPC分类号： H04K3/827 ,  H04K3/25 ,  H04K2203/14 ,  H04K2203/18 ,  H04L63/105 ,  H04L63/18

摘要： A communication network includes a local area network (LAN) and a wireless access point coupled to the LAN. In one embodiment, each access point includes a medium access control (MAC) stage, and a radio frequency (RF) transmitter/receiver for communicating unsecure message data via RF links with users of associated wireless devices. An optical transmitter/receiver in the access point enables the users to communicate secure message data over the LAN via free space optical (FSO) links with the users. The MAC stage operates (i) to direct unsecure data from the LAN to the wireless device users and to direct unsecure data from the users to the LAN, via the RF transmitter/receiver; and (ii) to direct secure data from the LAN to the wireless device users and to direct secure data from the users to the LAN, via the optical transmitter/receiver. An integrated VoIP/FSO portable handset is also disclosed.

摘要翻译： 通信网络包括局域网（LAN）和耦合到LAN的无线接入点。 在一个实施例中，每个接入点包括介质访问控制（MAC）级，以及用于经由RF链路与不相关无线设备的用户通信不安全消息数据的射频（RF）发射机/接收机。 接入点中的光发射机/接收机使得用户能够通过与用户的自由空间光（FSO）链路在LAN上传送安全消息数据。 MAC级操作（i）将不安全的数据从LAN引导到无线设备用户，并通过RF发射机/接收机将不安全的数据从用户引导到LAN; 以及（ii）将来自LAN的安全数据引导到无线设备用户，并经由光发射机/接收机将来自用户的安全数据引导至LAN。 还公开了一种集成的VoIP / FSO便携式手持机。

公开(公告)号：US20100303466A1

公开(公告)日：2010-12-02

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：US20100124421A1

公开(公告)日：2010-05-20

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的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：US06743797B2

公开(公告)日：2004-06-01

申请号：US10079485

申请日：2002-02-22

申请人： Arthur M. Brown ,  Naresh Chand

发明人： Arthur M. Brown ,  Naresh Chand

IPC分类号： A61K31495

CPC分类号： A61K31/495

摘要： Disclosed are methods of preventing or treating cardiac arrhythmia comprising administering to a mammal in need thereof, such as a human, an effective amount of vanoxerine (GBR 12909) or a pharmaceutically acceptable salt, derivative or metabolite thereof.

摘要翻译： 公开了预防或治疗心律失常的方法，其包括向有需要的哺乳动物（例如人）施用有效量的vanoxerine（GBR 12909）或其药学上可接受的盐，衍生物或代谢物。

公开(公告)号：US5440575A

公开(公告)日：1995-08-08

申请号：US223877

申请日：1994-04-06

申请人： Naresh Chand ,  Robert B. Comizzoli ,  John W. Osenbach ,  Charles B. Roxlo ,  Won-Tien Tsang

发明人： Naresh Chand ,  Robert B. Comizzoli ,  John W. Osenbach ,  Charles B. Roxlo ,  Won-Tien Tsang

IPC分类号： H01L21/3105 ,  H01L21/316 ,  H01S5/00 ,  H01S5/022 ,  H01S5/028 ,  H01S3/19

CPC分类号： H01L21/02164 ,  H01L21/02263 ,  H01L21/3105 ,  H01L21/31608 ,  H01S5/0021 ,  H01S5/02228 ,  H01S5/02248 ,  H01S5/02288 ,  H01S5/0282 ,  H01S5/0683

摘要： Disclosed are high reliability semiconductor lasers that need not be maintained inside a hermetic enclosure. Such lasers can advantageously be used in a variety of applications, e.g., in optical fiber telecommunications, and in compact disc players. Such "non-hermetic" lasers comprise facet coatings that comprise a dielectric layer that has very low water saturation value. In preferred embodiments this dielectric layer is SiO.sub.x (1.ltoreq.x

摘要翻译： 公开了不需要保持在密封外壳内的高可靠性半导体激光器。 这样的激光器可以有利地用于各种应用中，例如在光纤通信中，以及在光盘播放器中。 这种“非密封”激光器包括具有非常低的水饱和度值的介电层的小面涂层。 在优选实施例中，该电介质层是通过分子束法沉积的SiO x（1

公开(公告)号：US08406427B2

公开(公告)日：2013-03-26

申请号：US12587743

申请日：2009-10-13

申请人： Naresh Chand ,  Bruce M. Eteson

发明人： Naresh Chand ,  Bruce M. Eteson

IPC分类号： H04L29/06

CPC分类号： H04K3/827 ,  H04K3/25 ,  H04K2203/14 ,  H04K2203/18 ,  H04L63/105 ,  H04L63/18

摘要： A communication network includes a local area network (LAN) and a wireless access point coupled to the LAN. In one embodiment, each access point includes a medium access control (MAC) stage, and a radio frequency (RF) transmitter/receiver for communicating unsecure message data via RF links with users of associated wireless devices. An optical transmitter/receiver in the access point enables the users to communicate secure message data over the LAN via free space optical (FSO) links with the users. The MAC stage operates (i) to direct unsecure data from the LAN to the wireless device users and to direct unsecure data from the users to the LAN, via the RF transmitter/receiver; and (ii) to direct secure data from the LAN to the wireless device users and to direct secure data from the users to the LAN, via the optical transmitter/receiver. An integrated VoIP/FSO portable handset is also disclosed.

摘要翻译： 通信网络包括局域网（LAN）和耦合到LAN的无线接入点。 在一个实施例中，每个接入点包括介质访问控制（MAC）级，以及用于经由RF链路与不相关无线设备的用户通信不安全消息数据的射频（RF）发射机/接收机。 接入点中的光发射机/接收机使得用户能够通过与用户的自由空间光（FSO）链路在LAN上传送安全消息数据。 MAC级操作（i）将不安全的数据从LAN引导到无线设备用户，并通过RF发射机/接收机将不安全的数据从用户引导到LAN; 以及（ii）将来自LAN的安全数据引导到无线设备用户，并经由光发射机/接收机将来自用户的安全数据引导至LAN。 还公开了一种集成的VoIP / FSO便携式手持机。