会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • QPSK light modulator
    • QPSK光调制器
    • US07366362B2
    • 2008-04-29
    • US11471673
    • 2006-06-21
    • Daisuke Tanimura
    • Daisuke Tanimura
    • G02F1/035H04B10/04
    • H04B10/5055H04B10/505H04B10/50572H04B10/5561
    • The present invention provides a light transmitter with a stable IQ amplitude ratio relative to the characteristic change of a modulating system. The QPSK light modulator of the present invention includes a laser light source for outputting light; an optical demultiplexer for inputting light and branching it in two directions; two optical phase modulators for inputting respectively one of the branched lights; a π/2 phase shifter provided before or after one of the two optical phase modulators; an encoder for inputting I and Q signals into the optical phase modulators through drivers; and an optical multiplexer for synthesizing the outputs of the two optical phase modulators into a multiplexed, modulated light. The QPSK light modulator includes another optical demultiplexer after the optical multiplexer and a correcting section for correcting amplitude unbalance generated when light passes between the optical demultiplexers, by using output from the second optical demultiplexer.
    • 本发明提供一种相对于调制系统的特征变化具有稳定的IQ幅度比的光发射机。 本发明的QPSK光调制器包括用于输出光的激光源; 用于输入光并在两个方向上分支的光解复用器; 两个光学相位调制器,用于分别输入一个分支灯; 在两个光学相位调制器之一之前或之后提供的pi / 2移相器; 用于通过驱动器将I和Q信号输入光相位调制器的编码器; 以及光复用器,用于将两个光相位调制器的输出合成为多路调制的光。 QPSK光调制器包括光复用器之后的另一光解复用器,以及校正部,用于通过使用来自第二光解复用器的输出来校正光通过光解复用器之间产生的振幅不平衡。
    • 7. 发明申请
    • QPSK light modulator
    • QPSK光调制器
    • US20070003179A1
    • 2007-01-04
    • US11471673
    • 2006-06-21
    • Daisuke Tanimura
    • Daisuke Tanimura
    • G02F1/035
    • H04B10/5055H04B10/505H04B10/50572H04B10/5561
    • The present invention provides a light transmitter with a stable IQ amplitude ratio relative to the characteristic change of a modulating system. The QPSK light modulator of the present invention includes a laser light source for outputting light; an optical demultiplexer for inputting light and branching it in two directions; two optical phase modulators for inputting respectively one of the branched lights; a π/2 phase shifter provided before or after one of the two optical phase modulators; an encoder for inputting I and Q signals into the optical phase modulators through drivers; and an optical multiplexer for synthesizing the outputs of the two optical phase modulators into a multiplexed, modulated light. The QPSK light modulator includes another optical demultiplexer after the optical multiplexer and a correcting section for correcting amplitude unbalance generated when light passes between the optical demultiplexers, by using output from the second optical demultiplexer.
    • 本发明提供一种相对于调制系统的特征变化具有稳定的IQ幅度比的光发射机。 本发明的QPSK光调制器包括用于输出光的激光源; 用于输入光并在两个方向上分支的光解复用器; 两个光学相位调制器,用于分别输入一个分支灯; 在两个光学相位调制器之一之前或之后提供的pi / 2移相器; 用于通过驱动器将I和Q信号输入光相位调制器的编码器; 以及光复用器,用于将两个光相位调制器的输出合成为多路调制的光。 QPSK光调制器包括光复用器之后的另一光解复用器,以及校正部,用于通过使用来自第二光解复用器的输出来校正光通过光解复用器之间产生的振幅不平衡。