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1. 发明申请

US20040161249A1 Optical transmitter 审中-公开
标题翻译：光发射机
公开(公告)号：US20040161249A1
公开(公告)日：2004-08-19
申请号：US10776265
申请日：2004-02-12
申请人： Fujitsu Limited
发明人： Atsushi Suda , Akihiko Hayashi
IPC分类号： H04B010/04
CPC分类号： H04B10/505 , H04B10/503 , H04B10/50575 , H04B10/588 , H04B2210/075
摘要： In addition to a pilot signal for the conventional operating point control, a second pilot signal with a different frequency is superimposed on an optical signal. Then, the modulation component of an optical signal corresponding to the second pilot signal is detected from the output of an external modulator, the phase of the modulation component of the optical signal is compared with the phase of the second pilot signal, and as a result, an amplitude is obtained. The amplitude of a signal indicating a phase difference obtained when the amplitude of the driving waveform of the external modulator is different from the Vnull of the external modulator is detected, using the amplitude of the signal indicating the phase difference obtained when the amplitude of the driving waveform is the same as Vnull, as a reference, and the amplitude of the driving waveform.
摘要翻译：除了用于常规工作点控制的导频信号之外，具有不同频率的第二导频信号被叠加在光信号上。然后，从外部调制器的输出检测与第二导频信号对应的光信号的调制分量，将光信号的调制分量的相位与第二导频信号的相位进行比较，结果，获得振幅。表示当外部调制器的驱动波形的振幅与外部调制器的Vpi不同时获得的相位差的信号的幅度使用表示当驾驶的幅度获得的相位差的信号的幅度被检测时波形与Vpi相同，作为参考，以及驱动波形的振幅。

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