专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09014574B2 Optical receiver, polarization demultiplexer, and optical receiving method 有权
标题翻译：光接收机，偏振解复用器和光接收方式
公开(公告)号：US09014574B2
公开(公告)日：2015-04-21
申请号：US14002266
申请日：2012-02-28
申请人： Manabu Arikawa , Daisaku Ogasahara , Emmanuel Le Taillandier de Gabory , Kiyoshi Fukuchi
发明人： Manabu Arikawa , Daisaku Ogasahara , Emmanuel Le Taillandier de Gabory , Kiyoshi Fukuchi
IPC分类号： H04B10/06 , H04J14/06 , H04B10/61
CPC分类号： H04J14/06 , H04B10/614 , H04B10/6166
摘要： In order to appropriately demultiplex the polarization multiplexed BPSK signal without using a training sequence and decreasing the resistance to a frequency offset, an optical receiver includes a coherent optical detection unit receiving an optical signal in which BPSK modulated carrier waves are polarization-multiplexed, performing coherent detection by mixing the received optical signal with local light, and outputting first electrical signals corresponding to the carrier waves; a butterfly FIR filter receiving the first electrical signals and extracting second electrical signals corresponding to each of the carrier waves from the first electrical signals; and a coefficient control unit for calculating a sum of respective phases of the second electrical signals output from the butterfly FIR filter, adaptively controlling tap coefficients of the butterfly FIR filter so that the calculated phase sum may become equal to 0 or π, and outputting tap coefficients after being controlled to the butterfly FIR filter.
摘要翻译：为了适当地解复用偏振复用的BPSK信号而不使用训练序列并降低对频偏的电阻，光接收机包括相干光检测单元，其接收光信号，其中BPSK调制载波被偏振复用，执行相干通过将接收的光信号与本地光混合来检测，并输出与载波对应的第一电信号; 蝶形FIR滤波器，接收第一电信号并从第一电信号中提取对应于每个载波的第二电信号; 以及系数控制单元，用于计算从蝶形FIR滤波器输出的第二电信号的各相的和，自适应地控制蝶形FIR滤波器的抽头系数，使得所计算的相位和可以变为等于0或者pgr;并输出抽头系数被控制到蝴蝶FIR滤波器。

2. 发明授权

US09166697B2 Optical transmitter and method for controlling the same 有权
标题翻译：光发射机及其控制方法
公开(公告)号：US09166697B2
公开(公告)日：2015-10-20
申请号：US14112119
申请日：2011-04-19
申请人： Emmanuel Le Taillandier de Gabory , Sadao Fujita , Kiyoshi Fukuchi
发明人： Emmanuel Le Taillandier de Gabory , Sadao Fujita , Kiyoshi Fukuchi
IPC分类号： H04B10/04 , H04B10/54 , G02F1/01 , H04B10/50
CPC分类号： H04B10/541 , G02F1/0123 , H04B10/50595
摘要： Since it is difficult to emit a stable and reliable modulated lightwave signal by means of IQ modulators used for QAM format, a method for controlling an optical transmitter according to an exemplary aspect of the invention includes the steps of (a) keeping an optical amplitude of a continuous wave light output from the optical transmitter constant, (b) making operating point values in optical modulation converge to predetermined values during step (a), and (c) modulating the continuous wave light with multiple amplitudes and phase levels around the operating point values converged in step (b).
摘要翻译：由于难以通过用于QAM格式的IQ调制器发出稳定且可靠的调制光波信号，所以根据本发明的示例性方面的用于控制光发送器的方法包括以下步骤：（a）保持光振幅从光发射器输出的连续波光恒定，（b）在步骤（a）期间使光学调制中的工作点值收敛到预定值，并且（c）调制在工作点周围具有多个幅度和相位水平的连续波光值在步骤（b）中收敛。

3. 发明授权

US08682178B2 Method and system for setting timing of phase modulation of xPSK transmitter 有权
标题翻译：用于设置xPSK发射机相位调制定时的方法和系统
公开(公告)号：US08682178B2
公开(公告)日：2014-03-25
申请号：US12999994
申请日：2008-07-08
申请人： Emmanuel Le Taillandier de Gabory , Satomi Shioiri
发明人： Emmanuel Le Taillandier de Gabory , Satomi Shioiri
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , H04B10/5561
摘要： A method is provided for setting a timing of phase modulation by a target phase modulator within an optical transmitter which performs 2n order phase shift keying, n being a natural number equal to or more than two. The method is provided with: feeding a specific pattern to the optical transmitter to allow the xPSK transmitter to emit an optical carrier in accordance with the specific pattern; receiving the optical carrier by a delay interferometer; converting a pair of light signals emitted from constructive and destructive outputs of the delay interferometer into an electrical signal; detecting a peak to peak value of the electrical signal; and setting the timing of the phase modulation by the target phase modulator so as to minimize the peak to peak value of the electrical signal.
摘要翻译：提供了一种用于在进行2n阶相移键控的光发射机内由目标相位调制器设置相位调制定时的方法，n是等于或大于2的自然数。该方法具有：向光发射机馈送特定模式以允许xPSK发射机根据特定模式发射光载波; 通过延迟干涉仪接收光载波; 将由延迟干涉仪的结构性和破坏性输出发射的一对光信号转换成电信号; 检测电信号的峰峰值; 并且通过目标相位调制器设置相位调制的定时，以便最小化电信号的峰峰值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式