OPTICAL FIBER TRANSMITTER FOR SIMULTANEOUSLY SUPPRESSING STIMULATED BRILLOUIN SCATTERING AND SELF/EXTERNAL-PHASE MODULATION-INDUCED NOLINEAR DISTORTIONS IN A LONG-DISTANCE BROADBAND DISTRIBUTION SYSTEM
    1.
    发明授权
    OPTICAL FIBER TRANSMITTER FOR SIMULTANEOUSLY SUPPRESSING STIMULATED BRILLOUIN SCATTERING AND SELF/EXTERNAL-PHASE MODULATION-INDUCED NOLINEAR DISTORTIONS IN A LONG-DISTANCE BROADBAND DISTRIBUTION SYSTEM 有权
    用于同时抑制刺激式钻石散射的光纤发射器和长距离宽带分配系统中的自相/外相调制诱发的线性失真

    公开(公告)号:US06535315B1

    公开(公告)日:2003-03-18

    申请号:US09490020

    申请日:2000-01-21

    IPC分类号: H04B1004

    摘要: The invention provide an optical fiber transmitter by both suppressing stimulated Brillouin scattering (SBS) effect and composite second-order (CSO) distortions at an optimized condition. The optical fiber transmitter includes a frequency modulator generating a first tone microwave with frequency f1 coupled to a laser source, and a phase modulator generating a second tone microwave with frequency f2 coupled to an external phase modulator, so as to broaden the modulated light spectrum. The first tone microwave with frequency f1 is set to be greater than 2 to 3 times of the highest frequency content in the modulating signals. The second tone microwave with frequency f2 is designed to be close to a harmonic frequency of f1 and no less than three times of f1. The first tone microwave with frequency f1 and a second frequency f2 are inputted to two power amplifiers, respectively, and then are respectively inputted to a laser source and an external phase modulator. These two power amplifiers are controlled by an microprocessor to automatically adjust a desired phase modulation index at 1.4 for the optical fiber transmitter with a repeaterless design or at an desired index depending on the desired transmission distance in a repeater design. The external phase modulator is coupled to a pare of fiber amplifiers for the repeaterless design or several pairs of fiber amplifers coupled in series for the repeater design. The last pair of the fiber amplifiers are coupled to optical receivers.

    摘要翻译: 本发明通过在优化条件下抑制受激布里渊散射(SBS)效应和复合二阶(CSO)失真来提供光纤发射器。 该光纤发射机包括频率调制器,其产生频率f1耦合到激光源的第一音调微波,以及产生具有耦合到外部相位调制器的频率f2的第二音调微波的相位调制器,以便扩展调制的光谱。 具有频率f1的第一音调微波设置为大于调制信号中最高频率内容的2至3倍。 具有频率f2的第二音调微波设计为接近f1的谐波频率并且不小于f1的三倍。 具有频率f1和第二频率f2的第一音调微波分别输入到两个功率放大器,然后分别输入到激光源和外部相位调制器。 这两个功率放大器由微处理器控制,以便按照中继器设计中的期望的传输距离,以无中继器设计或按期望的索引自动调节1.4的光纤发射机所需的相位调制指数。 外部相位调制器耦合到用于无中继器设计的光纤放大器的一对或耦合到中继器设计的几对光纤放大器。 最后一对光纤放大器耦合到光接收器。

    Method and apparatus for interleaved optical single sideband modulation
    2.
    发明授权
    Method and apparatus for interleaved optical single sideband modulation 失效
    用于交织光学单边带调制的方法和装置

    公开(公告)号:US06525857B1

    公开(公告)日:2003-02-25

    申请号:US09575811

    申请日:2000-05-22

    IPC分类号: H04B1004

    摘要: A method and device for bandwidth efficient multi-channel optical single sideband modulation with suppressed carrier and a corresponding method and apparatus for demodulation are disclosed. The modulator includes a bandwidth efficient coder/modulator, a Microwave/millimeter-wave upconverter and an OSSB modulator, an optical notch filter and a chirped fiber grating. The demodulator uses at least one narrowband optical bandpass filters in combination with at least one baseband optical receiver to recover the transmitted baseband digital signals. The modulation method and device are suitable for short or long-distance optical fiber transmission systems.

    摘要翻译: 公开了一种用于具有抑制载波的带宽有效多信道光学单边带调制的方法和装置以及用于解调的相应方法和装置。 调制器包括带宽有效的编码器/调制器,微波/毫米波上变频器和OSSB调制器,光学陷波滤波器和啁啾光纤光栅。 解调器使用至少一个窄带光带通滤波器与至少一个基带光接收器组合以恢复发射的基带数字信号。 调制方法和装置适用于短距离或长距离光纤传输系统。

    Optical fiber transmitter for long distance subcarrier multiplexed lightwave systems
    3.
    发明授权
    Optical fiber transmitter for long distance subcarrier multiplexed lightwave systems 有权
    用于长距离副载波复用光波系统的光纤发射机

    公开(公告)号:US06559994B1

    公开(公告)日:2003-05-06

    申请号:US09376594

    申请日:1999-08-18

    IPC分类号: H04B1004

    摘要: An optical fiber transmitter, which consists of a modulated optical source, a pre-distortion circuit, a chirped-fiber grating, an optical circulator or a coupler, is designed to transport subcarrier multiplexed (SCM) signals over a long transmission distance. Here the SCM signals include: analog amplitude-modulated vestigial-sideband (AM-VSB) cable television signals, digital quadrature-amplitude-modulated (QAM) signals, or orthogonal-frequency-division-multiplexed (OFDM) signals, or quadrature-phase-shift-keyed (QPSK) signals, etc. on radio-frequency (RF) or microwave carriers, and/or digital wireless signals on RF, microwave or millimeter wave carriers. The modulated light source can be a directly modulated laser diode, or an external LiNbO3 modulator with a continuous wave (CW) laser diode as the source, or an external electro-absorption modulator with an integrated CW laser diode. The chirped fiber grating has a chromatic dispersion characteristic which is opposite to that of the output transmission path, so that the majority of nonlinear distortions and carrier suppression caused by the optical fiber dispersion in a long-distance system can be significantly reduced. The pre-distortion circuit is used to correct the residual nonlinear distortions and eliminate the residual carrier suppression effect, which cannot be completely eliminated by the chirped fiber grating. The pre-distortion circuit is also used to suppress the residual nonlinear distortions and carrier suppression effects caused by the chirped fiber grating itself.

    摘要翻译: 由调制光源,预失真电路,啁啾光纤光栅,光环行器或耦合器组成的光纤发射机被设计成在长的传输距离上传输副载波多路复用(SCM)信号。 这里,SCM信号包括:模拟幅度调制残留边带(AM-VSB)有线电视信号,数字正交幅度调制(QAM)信号或正交频分复用(OFDM)信号或正交相位 在射频(RF)或微波载波上的移动键控(QPSK)信号等,和/或RF,微波或毫米波载波上的数字无线信号。 调制光源可以是直接调制的激光二极管或具有连续波(CW)激光二极管作为源的外部LiNbO3调制器,或具有集成CW激光二极管的外部电吸收调制器。 啁啾光纤光栅具有与输出传输路径的色散特性相反的色散特性,从而可以显着地减少远距离系统中的光纤色散引起的大部分非线性失真和载波抑制。 预失真电路用于校正残余非线性失真,消除残留载波抑制效应,这不能被啁啾光纤光栅完全消除。 预失真电路还用于抑制由啁啾光纤光栅本身引起的残余非线性失真和载波抑制效应。

    High-throughput, low-latency next generation internet networks using optical label switching and high-speed optical header generation, detection and reinsertion
    4.
    发明授权
    High-throughput, low-latency next generation internet networks using optical label switching and high-speed optical header generation, detection and reinsertion 有权
    高吞吐量,低延迟的下一代互联网网络,使用光标签切换和高速光头生成,检测和重新插入

    公开(公告)号:US06545781B1

    公开(公告)日:2003-04-08

    申请号:US09352095

    申请日:1999-07-14

    IPC分类号: H04J1402

    摘要: An optical signaling header technique applicable to optical networks wherein packet routing information is embedded in the same channel or wavelength as the data payload so that both the header and data payload propagate through network elements with the same path and the associated delays. The header routing information has sufficiently different characteristics from the data payload so that the signaling header can be detected without being affected by the data payload, and that the signaling header can also be removed without affecting the data payload. The signal routing technique can overlaid onto the conventional network elements in a modular manner using two types of applique modules. The first type effects header encoding and decoding at the entry and exit points of the data payload into and out of the network; the second type effects header detection at each of the network elements.

    摘要翻译: 一种适用于光网络的光信令报头技术,其中分组路由信息被嵌入与数据有效载荷相同的信道或波长,以便报头和数据有效载荷通过具有相同路径和相关延迟的网络元件传播。 报头路由信息与数据有效载荷具有足够不同的特性,使得可以检测信令报头,而不受数据有效载荷的影响,并且信令报头也可以在不影响数据有效载荷的情况下被去除。 信号路由技术可以使用两种类型的贴花模块以模块化的方式覆盖到常规网络元件上。 在数据有效载荷进出网络的入口点和出口点的第一种类型的效果头编码和解码; 在每个网络元件处的第二类型效果头检测。

    Optical communication using duobinary modulation
    6.
    发明授权
    Optical communication using duobinary modulation 有权
    使用双向调制的光通信

    公开(公告)号:US07577367B2

    公开(公告)日:2009-08-18

    申请号:US11154930

    申请日:2005-06-15

    申请人: Winston I. Way

    发明人: Winston I. Way

    IPC分类号: H04B10/04

    摘要: Optical techniques, devices and systems for combining duobinary modulation and optical subcarrier multiplexing in optical communication applications. An analog mixer is used to mix a duobinary signal for a data channel and a local oscillator signal to produce a modulation control signal for controlling the subsequent optical subcarrier multiplexing modulation. Various optical subcarrier multiplexing modulation techniques may be used including optical single sideband modulators and optical double sideband modulators.

    摘要翻译: 用于在光通信应用中组合双二进制调制和光副载波复用的光学技术,设备和系统。 模拟混频器用于混合用于数据信道的双二进制信号和本地振荡器信号,以产生用于控制随后的光副载波复用调制的调制控制信号。 可以使用各种光学副载波复用调制技术,包括光学单边带调制器和光学双边带调制器。

    Two-way broadband CATV communication network protocol and monitoring
technology

    公开(公告)号:US5768280A

    公开(公告)日:1998-06-16

    申请号:US730960

    申请日:1996-10-16

    申请人: Winston I. Way

    发明人: Winston I. Way

    摘要: A medium-access protocol is disclosed for use in a communication network to provide a two-way broadband communication network. The communication network comprises a central network controller (CNC) and a plurality of user nodes, and the protocol comprises the steps of: (a) providing an RF modulator and a receiver tuner for each of the user nodes; (b) allocating a plurality of vacant CATV channel for the CNC, each channel being assigned a separate frequency band; (c) causing a first user node, which intents to communicate with a second user node, to send a request-to-communicate signal to the CNC via a first frequency band centered at first frequency, the first user node having a first RF modulator and a first receiver tuner, and the second user node having a second RF modulator and a second receiver tuner; (d) causing the CNC to send a checking signal to the second user via a second frequency band centered at second frequency to see whether the second user is busy; (e) if the second user is not busy, then causing the CNC to assign a third frequency band centered at a third carrier frequency to the first RF modulator provided for the first user node and a fourth frequency band centered at a fourth carrier frequency to the second RF modulator provided for the first user node, and tuning the first receiver tuner to the fourth carrier frequency and tuning the second receiver tuner to the third carrier frequency; and (f) causing the first user node and the second user node to communicate via the third and fourth frequency bands. With this protocol, about 600 (analog) to 10,000 (digital) pairs of users can be allowed to communicate with each other at the same time. A security checking procedure can be provided by: (a) roll-call polling each user node to check a status thereof; and (b) warning a network manager if no response is received from any of the user nodes within a predetermined period of time.

    Fiber optic cable television distribution system
    8.
    发明授权
    Fiber optic cable television distribution system 失效
    光纤电视分配系统

    公开(公告)号:US4891694A

    公开(公告)日:1990-01-02

    申请号:US274303

    申请日:1988-11-21

    申请人: Winston I. Way

    发明人: Winston I. Way

    IPC分类号: H04N7/173 H04N7/22

    CPC分类号: H04N7/17354 H04N7/22

    摘要: In a system for distributing CATV signals to multiple customer locations, each location is connected to a remote terminal via a dedicated optical fiber. The tuner associated with each customer TV set is located in the remote terminal. Channel-selection signals are sent over the fiber from the customer location to the remote terminal. Only the single selected channel is then transmitted over the fiber from the remote terminal to the associated TV set.

    摘要翻译: 在将CATV信号分配到多个客户位置的系统中,每个位置通过专用光纤连接到远程终端。 与每个客户电视机相关联的调谐器位于远程终端中。 信道选择信号通过光纤从客户位置发送到远程终端。 然后只有单个选定的信道通过光纤从远程终端传输到相关联的电视机。

    OPTICAL RING NETWORKS HAVING NODE-TO-NODE OPTICAL COMMUNICATION CHANNELS FOR CARRYING DATA TRAFFIC
    9.
    发明申请
    OPTICAL RING NETWORKS HAVING NODE-TO-NODE OPTICAL COMMUNICATION CHANNELS FOR CARRYING DATA TRAFFIC 审中-公开
    具有用于携带数据传输的节点到节点光通信信道的光环网络

    公开(公告)号:US20120195588A1

    公开(公告)日:2012-08-02

    申请号:US13440976

    申请日:2012-04-05

    申请人: Winston I. Way

    发明人: Winston I. Way

    IPC分类号: H04J14/02 H04B10/20

    摘要: Techniques, apparatus and systems for optical communications, including fiber ring networks with protection switching to maintain optical communications when an optical failure occurs and to automatically revert to normal operation when the optical failure is corrected, fiber ring networks that provide a circulating optical probe signal at an optical probe wavelength within the gain spectral range of optical amplifiers used in a fiber ring network to detect an optical failure, and fiber ring networks that support broadcast-and-select optical WDM signals carrying communication traffic to the optical ring nodes without regeneration at each optical ring node and one or more overlaid in-band node-to-node optical signals carrying communication traffic with regeneration at each node.

    摘要翻译: 用于光通信的技术,装置和系统,包括具有保护切换的光纤环网络,以在发生光学故障时保持光通信,并且当光学故障被校正时自动恢复到正常操作;光纤环网络,其提供循环光探针信号 在光纤环网中用于检测光学故障的光放大器的增益光谱范围内的光探测器波长,以及支持向光环路节点承载通信业务的广播选择光WDM信号的光纤环网络, 光环节点和一个或多个覆盖的带内节点到节点光信号,其携带在每个节点处具有再生的通信业务。