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    • 1. 发明申请
    • CHIRP-MANAGED, ELECTROABSORPTION-MODULATED LASER
    • CHIRP管理,电子调制激光
    • WO2008024326A3
    • 2008-05-08
    • PCT/US2007018448
    • 2007-08-21
    • FINISAR CORPMAHGEREFTEH DANIELMATSUI YASUHIROZHENG XUEYANJOHNSON BARTWALKER DUNCANTAYEBATI PARVIZ
    • MAHGEREFTEH DANIELMATSUI YASUHIROZHENG XUEYANJOHNSON BARTWALKER DUNCANTAYEBATI PARVIZ
    • H04B10/50H04B10/58
    • H04B10/58H04B10/503H04B10/504H04B2210/254
    • 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.
    • 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。
    • 2. 发明申请
    • OPTICAL TRANSMISSION USING SEMICONDUCTOR OPTICAL AMPLIFIER (SOA)
    • 使用半导体光放大器(SOA)的光传输
    • WO2008021567A2
    • 2008-02-21
    • PCT/US2007018427
    • 2007-08-20
    • FINISAR CORPMATSUI YASUHIROMAHGEREFTEH DANIELZHENG XUEYANMCCALLION KEVINTAYEBATI PARVIZ
    • MATSUI YASUHIROMAHGEREFTEH DANIELZHENG XUEYANMCCALLION KEVINTAYEBATI PARVIZ
    • H04B10/2513H04B10/516H04B10/54H04B10/556
    • H04B10/5161H04B10/25137H04B10/516H04B10/541H04B10/5563H04B2210/517
    • A fiber optic communication system comprising: an optical signal source adapted to receive a binary first signal and generate a binary second signal, wherein the binary first signal has an amplitude modulated component, wherein the binary second signal has an amplitude modulated component and a frequency modulated component, and further wherein the binary second signal is characterized in that the higher intensity 1 bits are red shifted relative to the lower intensity 0 bits; a semiconductor optical amplifier (SOA) adapted to receive the binary second signal and generate a binary third signal, wherein the binary third signal has an amplitude modulated component and a frequency modulated component, and further wherein the semiconductor optical amplifier operates in saturation; and an optical spectrum reshaper (OSR) adapted to reshape the binary third signal into a binary fourth signal, wherein the binary fourth signal has an amplitude modulated component and a frequency modulated component. A method for transmitting a signal, comprising: receiving a binary first signal having an amplitude modulated component and generating a binary second signal having an amplitude modulated component and a frequency modulated component, wherein the binary second signal is characterized in that the higher intensity 1 bits are red shifted relative to the lower intensity 0 bits; passing the binary second signal through a semiconductor optical amplifier (SOA) operating in saturation so as to generate a binary third signal, wherein the binary third signal has an amplitude modulated component and a frequency modulated component; and reshaping the binary third signal into a binary fourth signal, wherein the binary fourth signal has an amplitude modulated component and a frequency modulated component.
    • 一种光纤通信系统,包括:光信号源,适于接收二进制第一信号并产生二进制第二信号,其中所述二进制第一信号具有幅度调制分量,其中所述二进制第二信号具有幅度调制分量和频率调制 并且其中所述二进制第二信号的特征在于,较高强度1比特相对于较低强度0比特红移; 适于接收所述二进制第二信号并产生二进制第三信号的半导体光放大器(SOA),其中所述二进制第三信号具有幅度调制分量和调频分量,并且其中所述半导体光放大器工作在饱和状态; 以及适于将二进制第三信号重新形成二进制第四信号的光谱整形器(OSR),其中二进制第四信号具有调幅分量和调频分量。 一种用于发送信号的方法,包括:接收具有幅度调制分量的二进制第一信号并产生具有幅度调制分量和调频分量的二进制第二信号,其中二进制第二信号的特征在于较高强度1比特 相对于较低强度的0位红移; 使所述二进制第二信号通过饱和运行的半导体光放大器(SOA),以产生二进制第三信号,其中所述二进制第三信号具有调幅分量和调频分量; 以及将所述二进制第三信号重新形成二进制第四信号,其中所述二进制第四信号具有幅度调制分量和调频分量。
    • 3. 发明申请
    • VERSATILE COMPACT TRANSMITTER FOR GENERATION OF ADVANCED MODULATION FORMATS
    • 用于生成高级调制格式的多功能紧凑型发射机
    • WO2007117678A3
    • 2009-04-02
    • PCT/US2007008729
    • 2007-04-06
    • FINISAR CORPMAHGEREFTEH DANIELZHENG XUEYANMATSUI YASUHIROTAYEBATI PARVIZ
    • MAHGEREFTEH DANIELZHENG XUEYANMATSUI YASUHIROTAYEBATI PARVIZ
    • H04B10/516H04B10/556
    • H04B10/5162H04B10/516H04B10/556H04B10/5561H04B2210/517
    • A system for generating a return-to-zero differentially-phase-shift-keyed (RZ-DPSK) optical signal comprising: a driver comprising an N-level digital multilevel transformer (N-level digital transformer) configured to receive a two level digital electrical signal representing 1s and Os and output a N-level electrical signal, wherein N > 2; an FM source configured to receive the N-level electrical signal output by the driver and generate an optical frequency modulated signal (FM/AM source); and an optical spectrum reshaper (OSR) configured to receive the optical frequency modulated signal output by the FM source and generate the desired RZ-DPSK optical signal. A method for generating a retum-to-zero differentially-phase-shift-keyed (RZ-DPSK) optical signal, the method comprising: (1) receiving a two level digital electrical signal representing 1s and Os and outputting a N-level electrical signal, wherein N > 2; (2) receiving the N-level electrical signal output and generating an optical frequency modulated signal; and (3) receiving the optical frequency modulated signal and generating the desired RZ-DPSK optical signal.
    • 一种用于产生归零差分相移键控(RZ-DPSK)光信号的系统,包括:驱动器,其包括N级数字多电平变压器(N级数字变压器),其被配置为接收两级数字 电信号表示1s和Os并输出N级电信号,其中N≥2; FM源,被配置为接收由驱动器输出的N电平电信号并产生光调制信号(FM / AM源); 以及光谱整形器(OSR),被配置为接收由FM源输出的光调制信号并产生所需的RZ-DPSK光信号。 一种用于产生信号到零差分相移键控(RZ-DPSK)光信号的方法,所述方法包括:(1)接收表示1s和Os的两电平数字电信号并输出​​N电平 信号,其中N> 2; (2)接收N电平电信号并产生光调制信号; 和(3)接收光调制信号并产生所需的RZ-DPSK光信号。
    • 5. 发明公开
    • OPTICAL SYSTEM COMPRISING AN FM SOURCE AND A SPECTRAL RESHAPING ELEMENT
    • 优化系统麻省理工学院FM-QUELLE UND EINEM SPEKTRAL-NEUFORMUNGSELEMENT
    • EP1738504A4
    • 2017-04-19
    • EP05724041
    • 2005-02-28
    • FINISAR CORP
    • MAHGEREFTEH DANIELMATSUI YASUHIROZHENG XUEYANJOHNSON BARTWALKER DUNCANTAYEBATI PARVIZ
    • H04B10/2513G02B6/12H04B10/50H04B10/516
    • H04B10/25137H04B10/504H04B10/505H04B10/5161H04B2210/516
    • In one form of the present invention, there is provided a fiber optic communication system comprising: an optical signal source adapted to receive a base binary signal and produce a first signal, said first signal being frequency modulated; and an optical spectrum reshaper adapted to reshape the first signal into a second signal, said second signal being amplitude modulated and frequency modulated; characterized in that: the frequency characteristics of said first signal, and the optical characteristics of said optical spectrum reshaper, being such that the frequency characteristics of said second signal are configured so as to increase the tolerance of the second signal to dispersion in a transmission fiber. In another form of the present invention, there is provided an optical transmitter comprising: a frequency modulated source for generating a first frequency modulated signal, and an amplitude modulator for receiving the first frequency modulated signal and for generating a second amplitude and frequency modulated signal.
    • 在本发明的一种形式中,提供一种光纤通信系统,包括:光信号源,适于接收基本二进制信号并产生第一信号,所述第一信号被频率调制; 以及适于将第一信号重新形成第二信号的光谱整形器,所述第二信号被幅度调制和频率调制; 其特征在于:所述第一信号的频率特性和所述光谱整形器的光学特性使得所述第二信号的频率特性被配置为增加第二信号对传输光纤中色散的容差 。 在本发明的另一形式中,提供了一种光发射机,包括:用于产生第一调频信号的调频源和用于接收第一调频信号并产生第二幅频调制信号的振幅调制器。