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    Colorless Differential Phase Shift Keyed and Low Crosstalk Demodulators
    4.
    发明申请
    Colorless Differential Phase Shift Keyed and Low Crosstalk Demodulators 审中-公开
    无色差分相移键控和低串扰解调器

    公开(公告)号：US20060232848A1

    公开(公告)日：2006-10-19

    申请号：US11279767

    申请日：2006-04-14

    申请人： Lei Xu ,  Ting Wang ,  Philip Ji ,  Lei Zong ,  Milorad Cvijetic

    发明人： Lei Xu ,  Ting Wang ,  Philip Ji ,  Lei Zong ,  Milorad Cvijetic

    IPC分类号： G02F2/00

    CPC分类号： H04B10/66

    摘要： A new differential phase-shift-keyed demodulator is disclosed which can achieve signal demodulation at different wavelengths on ITU grids without requiring active thermal tuning. In accordance with another aspect of the invention, a low-crosstalk demodulator is disclosed which reduces channel leakage by placing neighboring channels at non-optimal interference positions. A demodulator in accordance with the invention may be deployed in a WDM optical system.

    摘要翻译： 公开了一种新的差分相移键控解调器，其可以在ITU网格上实现不同波长的信号解调，而不需要主动热调谐。 根据本发明的另一方面，公开了一种低串扰解调器，其通过将相邻信道置于非最佳干扰位置来减少信道泄漏。 根据本发明的解调器可以部署在WDM光学系统中。

    All Order Polarization Mode Dispersion Compensation with Spectral Interference Based Pulse Shaping
    5.
    发明申请
    All Order Polarization Mode Dispersion Compensation with Spectral Interference Based Pulse Shaping 审中-公开
    所有阶极化模式色散补偿与基于光谱干涉的脉冲整形

    公开(公告)号：US20080002972A1

    公开(公告)日：2008-01-03

    申请号：US11762850

    申请日：2007-06-14

    申请人： Arthur Dogariu ,  Philip Ji ,  Ting Wang ,  Yutaka Yano ,  Tsutomu Tajima

    发明人： Arthur Dogariu ,  Philip Ji ,  Ting Wang ,  Yutaka Yano ,  Tsutomu Tajima

    IPC分类号： H04B10/08 ,  H04B17/00

    CPC分类号： H04B10/532

    摘要： A method includes determining spectral interference in real time on an optical signal by an optical path, the spectral interference being indicative of polarization mode dispersion by the optical path, and imposing optical pulses with a phase opposite to the spectral interference on the optical signal. Preferably, the imposing step comprises altering the amplitude or phase of a signal indicative of the spectral interference with an active element. The active element is preferably an acousto-optic modulator.

    摘要翻译： 一种方法包括通过光路在光信号上实时确定光谱干扰，光谱干涉表示通过光路的偏振模色散，并且施加具有与光信号上的光谱干涉相反的相位的光脉冲。 优选地，强制步骤包括改变指示与有源元件的频谱干扰的信号的幅度或相位。 有源元件优选为声光调制器。

    Optical Communication System and Method for Generating Dark Return-to-Zero and DWDM Optical MM-Wave Generation for ROF Downstream Link Using Optical Phase Modulator and Optical Interleaver
    6.
    发明申请
    Optical Communication System and Method for Generating Dark Return-to-Zero and DWDM Optical MM-Wave Generation for ROF Downstream Link Using Optical Phase Modulator and Optical Interleaver 失效
    用于通过光相位调制器和光交错器产生ROF下行链路的深度归零和DWDM光学MM波生成的光通信系统和方法

    公开(公告)号：US20070166054A1

    公开(公告)日：2007-07-19

    申请号：US11621765

    申请日：2007-01-10

    申请人： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang

    发明人： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang

    IPC分类号： H04B10/04

    CPC分类号： H04B10/508 ,  H04B10/2575 ,  H04B10/505 ,  H04J14/02 ,  H04J14/0256

    摘要： A method of generating a dark-RZ pulse in an optical communications system with a dual-arm modulator by setting a direct current bias on the modulator to a specific value such that an output optical power from the modulator achieves a maximum value when the RF signals on the first and second arms of the modulator are off and maintaining the direct current bias at the specific value and applying RF signals to the first and second arms of the modulator and delaying one of the RF signals applied to one of the first and second arms relative to the other of the RF signals such that a dark-RZ pulse is generated with a duty cycle based on the delay. Another aspect of the invention provides a method for generating dense wave division multiplexing (DWDM) optical mm-waves in an optical transmission system by phase modulated DWDM optical signal and applying the phase modulated DWDM optical signal to an input port of an optical interleaver, the optical interleaver having a specified bandwidth to suppress the optical carriers and convert the DWDM optical signal to DWDM optical mm-waves; and amplifying the DWDM optical mm-waves and transmitting the DWDM optical mm-waves over single mode fiber (SMF).

    摘要翻译： 一种在具有双臂调制器的光通信系统中通过将调制器上的直流偏置设置为特定值来产生暗RZ脉冲的方法，使得来自调制器的输出光功率在RF信号 在调制器的第一和第二臂处关闭并将直流偏压保持在特定值并且将RF信号施加到调制器的第一和第二臂并且延迟施加到第一和第二臂之一的RF信号之一 相对于RF信号中的另一个，使得以基于延迟的占空比产生暗RZ脉冲。 本发明的另一方面提供了一种通过相位调制DWDM光信号在光传输系统中产生密集波分复用（DWDM）光学毫米波的方法，并将相位调制的DWDM光信号应用于光交织器的输入端口， 具有指定带宽的光交错器以抑制光载波并将DWDM光信号转换为DWDM光学毫米波; 并放大DWDM光学毫米波，并通过单模光纤（SMF）传输DWDM光学毫米波。

    Triplexer Transceiver Using Parallel Signal Detection
    7.
    发明申请
    Triplexer Transceiver Using Parallel Signal Detection 有权
    使用并行信号检测的三路收发器

    公开(公告)号：US20070133987A1

    公开(公告)日：2007-06-14

    申请号：US11276486

    申请日：2006-03-02

    申请人： Lei Xu ,  Lei Zong ,  Philip Ji ,  Ting Wang ,  Yuji Abe

    发明人： Lei Xu ,  Lei Zong ,  Philip Ji ,  Ting Wang ,  Yuji Abe

    IPC分类号： H04J14/00

    CPC分类号： H04J14/0226 ,  H04B10/40 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0298

    摘要： An optical triplexer transceiver that utilizes parallel signal detection for use in broadband passive optical networks (B-PONs). The triplexer transceiver includes an optical filter comprising a first port coupled to a laser for receiving upstream optical data signals, a second port for passing the upstream optical data signals to a network, and for receiving combined downstream optical data and video signals from the network, the video signals modulated by subcarrier modulation (SCM), and a third port for communicating the combined downstream optical data and video signals to a photodetector constructed and arranged for simultaneously receiving the combined downstream optical data and video signals and converting the optical data and video signals to electrical signals. A plurality of filters are coupled to the photodetector for separating the combined downstream data and video signals, including a low-pass filter for passing the downstream data signals, and a band-pass filter for passing the video signals. The video signals are coherently detected in a number of stages corresponding to stages of SCM applied to the video signals. The triplexer transceiver is adapted to receive optical video signals that have been subjected first and second stages of SCM to move the spectra of the SCM video signals to a higher frequency range that does not overlap with a frequency range of the baseband data signals.

    摘要翻译： 一种使用并行信号检测用于宽带无源光网络（B-PON）的光学三重收发器。 三重收发器包括光滤波器，其包括耦合到激光器的第一端口用于接收上游光数据信号，用于将上游光数据信号传递到网络的第二端口，以及用于从网络接收组合的下行光数据和视频信号， 通过副载波调制（SCM）调制的视频信号和用于将组合的下行光数据和视频信号传送到光电探测器的第三端口，该光电探测器被构造和布置成同时接收组合的下行光数据和视频信号并转换光数据和视频信号 到电信号。 多个滤波器耦合到光电检测器，用于分离组合的下行数据和视频信号，包括用于通过下行数据信号的低通滤波器和用于传递视频信号的带通滤波器。 视频信号在对应于应用于视频信号的单片机的阶段的多个级中被相干检测。 三重收发器适于接收已经经历SCM的第一和第二级的光学视频信号，以将SCM视频信号的频谱移动到与基带数据信号的频率范围不重叠的较高频率范围。

    Generation of at least 100 Gbit/s optical transmission
    8.
    发明授权
    Generation of at least 100 Gbit/s optical transmission 有权
    产生至少100Gbit / s的光传输

    公开(公告)号：US08064775B2

    公开(公告)日：2011-11-22

    申请号：US12183368

    申请日：2008-07-31

    申请人： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang ,  Dayou Qian ,  Yutaka Yano

    发明人： Jianjun Yu ,  Lei Xu ,  Philip Ji ,  Ting Wang ,  Dayou Qian ,  Yutaka Yano

    IPC分类号： H04B10/04 ,  H04B10/12

    CPC分类号： H04B10/5165 ,  H04B10/54 ,  H04B10/548 ,  H04L27/2601

    摘要： A method includes generating at least two lightwave carriers from a lightwave source, the carriers having a wavelength spacing, creating an up-subchannel and a down-subchannel orthogonal to one another and spaced apart based on the fixed wavelength spacing from modulations of the lightwave carriers according to respective up-converted OFDM signals that are carrier suppressed, and combining one lightwave from the up-subchannel and one lightwave from the down-subchannel into an optical channel for transmission over an optical fiber.

    摘要翻译： 一种方法包括从光波源产生至少两个光波载波，所述载波具有波长间隔，产生基于与光波载波调制的固定波长间隔彼此正交并且间隔开的向上子信道和下信道 根据载波抑制的各自的上变换的OFDM信号，并将来自上信道的一个光波和来自下信道的一个光波组合成光信道以在光纤上传输。