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    • 1. 发明申请
    • Apparatus and Method for Control the Driving Amplitude of Differential Quadrature Phase Shift Keying Transmitter
    • 用于控制差分正交相移键控变送器的驱动幅度的装置和方法
    • US20120207483A1
    • 2012-08-16
    • US13501595
    • 2010-06-25
    • Ping CuiXiaoyu Zhu
    • Ping CuiXiaoyu Zhu
    • H04B10/04
    • H04B10/5561H04B10/5053H04B10/5057H04B10/50572H04B10/50575
    • The present invention discloses an apparatus and a method for controlling a driving amplitude of a DQPSK transmitter. The method includes: a DQPSK modulator modulating an optical signal emitted from a CW and without adding with modulated signal; a modulator feedback control unit is connected with a first bias point, a second bias point and a third bias point and controls the first bias point, the second bias point and the third bias point according to a part of the optical signal modulated by the DQPSK modulator; controlling the driving amplitude of a driver I according to temperature change of the driver I; controlling the driving amplitude of a driver Q according to temperature change of the driver Q. The present invention can be used to simplify complexity of the control circuit of the DQPSK transmitter, and therefore no extra optical signal-to-noise ratio cost would be created.
    • 本发明公开了一种用于控制DQPSK发射机的驱动振幅的装置和方法。 该方法包括:DQPSK调制器,调制从CW发射的光信号,而不加调制信号; 调制器反馈控制单元与第一偏置点,第二偏置点和第三偏置点连接,并且根据由DQPSK调制的光信号的一部分来控制第一偏置点,第二偏置点和第三偏置点 调制器 根据驾驶员I的温度变化控制驾驶员I的驾驶振幅; 根据驱动器Q的温度变化来控制驱动器Q的驱动振幅。本发明可以用于简化DQPSK发射机的控制电路的复杂度,因此不会产生额外的光信噪比成本 。