利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

211 条记录 (耗时 0.023 秒)

    Slow chirp compensation for enhanced signal bandwidth and transmission performances in directly modulated lasers
    1.
    发明授权
    Slow chirp compensation for enhanced signal bandwidth and transmission performances in directly modulated lasers 有权
    缓慢的啁啾补偿，用于增强直接调制激光器的信号带宽和传输性能

    公开(公告)号：US08027593B2

    公开(公告)日：2011-09-27

    申请号：US12028678

    申请日：2008-02-08

    申请人： Jianying Zhou ,  Xueyan Zheng ,  Kevin J. McCallion ,  Daniel Mahgerefteh ,  Hongmin Chen ,  Guoxi Sun ,  Parviz Tayebati

    发明人： Jianying Zhou ,  Xueyan Zheng ,  Kevin J. McCallion ,  Daniel Mahgerefteh ,  Hongmin Chen ,  Guoxi Sun ,  Parviz Tayebati

    IPC分类号： H04B10/12

    CPC分类号： H04B10/504 ,  H04B10/58

    摘要： The frequency chirp modulation response of a directly modulated laser is described using a small signal model that depends on slow chirp amplitude s and slow chirp time constant τs. The small signal model can be used to derive an inverse response for designing slow chirp compensation means. Slow chirp compensation means include electrical compensation, optical compensation, or both. Slow chirp electrical compensation can be implemented with an LR filter or other RF circuit coupled to a direct modulation source (e.g., a laser driver) and the directly modulated laser. Slow chirp optical compensation can be implemented with an optical spectrum reshaper having a rounded top and relatively large slope (e.g., 1.5-3 dB/GHz). The inverse response can be designed to under-compensate, to produce a flat response, or to over-compensate.

    摘要翻译： 使用取决于慢啁啾振幅s和慢啁啾时间常数τs的小信号模型来描述直接调制激光器的频率啁啾调制响应。 小信号模型可用于导出用于设计慢啁啾补偿装置的反向响应。 慢啁啾补偿装置包括电补偿，光学补偿或两者。 可以使用耦合到直接调制源（例如，激光驱动器）和直接调制的激光器的LR滤波器或其它RF电路来实现慢啁啾电补偿。 可以用具有圆顶和较大斜率（例如，1.5-3dB / GHz）的光谱整形器实现慢啁啾光学补偿。 反向响应可以设计为欠补偿，产生平坦响应或过度补偿。

    Optical FM source based on intra-cavity phase and amplitude modulation in lasers
    2.
    发明授权
    Optical FM source based on intra-cavity phase and amplitude modulation in lasers 有权
    基于激光器内腔内相位和幅度调制的光学FM源

    公开(公告)号：US07613401B2

    公开(公告)日：2009-11-03

    申请号：US11787163

    申请日：2007-04-13

    申请人： Yasuhiro Matsui ,  Parviz Tayebati ,  Daniel Mahgerefteh

    发明人： Yasuhiro Matsui ,  Parviz Tayebati ,  Daniel Mahgerefteh

    IPC分类号： H04B10/04

    CPC分类号： H04B10/5161 ,  H04B10/505 ,  H04B10/516 ,  H04B10/541 ,  H04B10/5563 ,  H04B2210/517

    摘要： A fiber optic communication system comprising: an optical signal source adapted to receive a binary base signal having a bit period T, and generate a first signal, wherein the first signal is frequency modulated; and an optical spectrum reshaper (OSR) adapted to reshape the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated; characterized in that: the optical signal source is a laser in which frequency modulation is generated by modulating the loss of the laser cavity. A method for transmitting a signal, comprising: receiving a binary base signal having a bit period T, and generating a first signal, wherein the first signal is frequency modulated; and reshaping the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated; characterized in that: the first signal is frequency modulated by using a laser in which frequency modulation is generated by modulating the loss of the laser cavity. A fiber optic communication system comprising: an optical signal source adapted to receive a binary base signal having a bit period T, and generate a first signal, wherein the first signal is frequency modulated; and an optical spectrum reshaper (OSR) adapted to reshape the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated; characterized in that: the optical signal source is a laser in which frequency modulation is generated by modulating the phase of the laser cavity.

    摘要翻译： 一种光纤通信系统，包括：光信号源，适于接收具有位周期T的二进制基本信号，并产生第一信号，其中所述第一信号被频率调制; 以及适于将所述第一信号重新形成第二信号的光谱整形器（OSR），其中所述第二信号被幅度调制和频率调制; 其特征在于：光信号源是通过调制激光腔的损耗来产生频率调制的激光器。 一种用于发送信号的方法，包括：接收具有位周期T的二进制基本信号，并产生第一信号，其中第一信号被频率调制; 以及将所述第一信号重新形成第二信号，其中所述第二信号被幅度调制和频率调制; 其特征在于：通过使用通过调制激光腔的损耗产生频率调制的激光来对第一信号进行频率调制。 一种光纤通信系统，包括：光信号源，适于接收具有位周期T的二进制基本信号，并产生第一信号，其中所述第一信号被频率调制; 以及适于将所述第一信号重新形成第二信号的光谱整形器（OSR），其中所述第二信号被幅度调制和频率调制; 其特征在于：光信号源是通过调制激光腔的相位来产生频率调制的激光器。

    Chirp-managed, electroabsorption-modulated laser
    4.
    发明申请
    Chirp-managed, electroabsorption-modulated laser 有权
    啁啾管理，电吸收调制激光

    公开(公告)号：US20080193143A1

    公开(公告)日：2008-08-14

    申请号：US11894477

    申请日：2007-08-21

    申请人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Xueyan Zheng ,  Bart Johnson ,  Duncan JW Walker ,  Parviz Tayebati

    发明人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Xueyan Zheng ,  Bart Johnson ,  Duncan JW Walker ,  Parviz Tayebati

    IPC分类号： H04B10/04

    CPC分类号： H04B10/505 ,  H04B10/25137 ,  H04B10/504

    摘要： An optical transmitter comprising: an optical source modulated with an input digital data signal so as to generate a first, frequency-modulated digital signal; and an amplitude modulator, modulated with the logical inverse of the input digital data signal, for receiving the first, frequency-modulated signal and generating a second, amplitude-modulated and frequency-modulated digital signal; wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp. A method for transmitting a signal, the method comprising: generating a first, frequency-modulated digital signal by modulating an optical source with an input digital data signal; and providing a second, amplitude-modulated and frequency-modulated digital signal by passing the first, frequency-modulated digital signal through an amplitude modulator while modulating the amplitude modulator with the logical inverse of the input digital data signal; wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp.

    摘要翻译： 一种光发射机，包括：用输入数字数据信号调制的光源，以产生第一调频数字信号; 以及用输入数字数据信号的逻辑反相调制的幅度调制器，用于接收第一频率调制信号并产生第二幅度调制和调频数字信号; 其中光源和幅度调制器各自被配置为产生正瞬态啁啾。 一种用于发送信号的方法，所述方法包括：通过用输入数字数据信号调制光源来产生第一调频数字信号; 以及通过使所述第一调频数字信号通过幅度调制器，同时用所输入的数字数据信号的逻辑反相调制所述振幅调制器来提供第二幅度调制和调频数字信号; 其中光源和幅度调制器各自被配置为产生正瞬态啁啾。

    Chirp managed laser with electronic pre-distortion
    5.
    发明授权
    Chirp managed laser with electronic pre-distortion 有权
    啁啾管理电子预失真的激光

    公开(公告)号：US07356264B2

    公开(公告)日：2008-04-08

    申请号：US11016466

    申请日：2004-12-17

    申请人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Parviz Tayebati

    发明人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Parviz Tayebati

    IPC分类号： H04B10/04

    CPC分类号： H04B10/25137

    摘要： A fiber optic transmitter comprising: a digital driver adapted to adjust the rise time and fall time of a digital input signal; an optical source adapted to receive the digital signal and produce a frequency modulated optical signal; and an optical spectrum reshaper adapted to convert the frequency modulated optical signal to an amplitude modulated optical signal. A method for transmitting an optical signal through a fiber comprising: receiving a digital input signal; adjusting the rise time and fall time of the digital input signal so as to produce an adjusted digital input signal; passing the adjusted digital input signal to an optical source so as to produce a frequency modulated optical signal; passing the frequency modulated optical signal through an optical spectrum reshaper so as to convert the frequency modulated optical signal to an amplitude modulated optical signal; and passing the amplitude modulated signal into the fiber.

    摘要翻译： 一种光纤发射机，包括：数字驱动器，适于调整数字输入信号的上升时间和下降时间; 适于接收数字信号并产生调频光信号的光源; 以及适于将调频光信号转换为调幅光信号的光谱整形器。 一种通过光纤发送光信号的方法，包括：接收数字输入信号; 调整数字输入信号的上升时间和下降时间，以产生经调整的数字输入信号; 将经调整的数字输入信号传送到光源，以产生调频光信号; 使调频光信号通过光谱整形器，以将调频光信号转换成调幅光信号; 并将幅度调制信号传递到光纤中。

    Chirp managed laser with electronic pre-distortion
    8.
    发明申请
    Chirp managed laser with electronic pre-distortion 有权
    啁啾管理电子预失真的激光

    公开(公告)号：US20050169642A1

    公开(公告)日：2005-08-04

    申请号：US11016466

    申请日：2004-12-17

    申请人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Parviz Tayebati

    发明人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Parviz Tayebati

    IPC分类号： G02B6/34 ,  H04B10/04

    CPC分类号： H04B10/25137

    摘要： A fiber transmitter comprising: a digital driver adapted to adjust the rise time and fall time of a digital input signal; an optical source adapted to receive the digital signal and produce a frequency modulated optical signal; and an optical spectrum reshaper adapted to convert the frequency modulated optical signal to an amplitude modulated optical signal. A method for transmitting an optical signal through a fiber comprising: receiving a digital input signal; adjusting the rise time and fall time of the digital input signal so as to produce an adjusted digital input signal; passing the adjusted digital input signal to an optical source so as to produce a frequency modulated optical signal; passing the frequency modulated optical signal through an optical spectrum reshaper so as to convert the frequency modulated optical signal to an amplitude modulated optical signal; and passing the amplitude modulated signal into the fiber.

    摘要翻译： 一种光纤发射机，包括：适于调整数字输入信号的上升时间和下降时间的数字驱动器; 适于接收数字信号并产生调频光信号的光源; 以及适于将调频光信号转换为调幅光信号的光谱整形器。 一种通过光纤发送光信号的方法，包括：接收数字输入信号; 调整数字输入信号的上升时间和下降时间，以产生经调整的数字输入信号; 将经调整的数字输入信号传送到光源，以产生调频光信号; 使调频光信号通过光谱整形器，以将调频光信号转换成调幅光信号; 并将幅度调制信号传递到光纤中。