| 基于MZ调制器工作点控制的前端电路设计 |
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| 引用本文： | 王晓丽,陈福深,孙豹.基于MZ调制器工作点控制的前端电路设计[J].半导体光电,2013,34(1):145-147. |
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| 作者姓名： | 王晓丽 陈福深 孙豹 |
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| 作者单位： | 电子科技大学通信与信息工程学院,成都,611731 |
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| 摘 要： | 设计了马赫-曾德尔(MZ)调制器工作点控制的前端电路.利用运放OP27设计文氏桥电路,产生1 kHz余弦波,作为扰动信号加到MZ调制器的RF端.运用运放OP27设计带通滤波器,从探测器分别提取一次谐波和二次谐波.利用乘法器MLT04实现对一次谐波和二次谐波的检波,分别得到一次谐波的幅度调制信号和二次谐波的幅度调制信号.这两个调制信号含有调制器工作点的相位信息,为后续的软件控制提供了两路含有相位信息的信号,使整个控制系统的实现更准确.
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| 关 键 词： | MZ调制器 工作点 扰动信号 滤波器 乘法器 |
| 收稿时间： | 8/7/2012 12:00:00 AM |
Front Control Circuit Design of the Working Point of MZ Modulator |
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| WANG Xiaoli,CHEN Fushen and SUN Bao.Front Control Circuit Design of the Working Point of MZ Modulator[J].Semiconductor Optoelectronics,2013,34(1):145-147. |
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| Authors: | WANG Xiaoli CHEN Fushen and SUN Bao |
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| Affiliation: | School of Communication and Information Engineering,University of Electronic Science and Technology of China,Chengdu 611731,CHN;School of Communication and Information Engineering,University of Electronic Science and Technology of China,Chengdu 611731,CHN;School of Communication and Information Engineering,University of Electronic Science and Technology of China,Chengdu 611731,CHN |
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| Abstract: | The front control circuit of the working point of MZ modulator is designed. OP27 is used to design Wien bridge circuit to generate 1 kHz cosine wave, and the 1 kHz cosine wave will be added to RF of MZ modulator as a disturbance signal. Band-pass filter designed by OP27 extracts a harmonic and the second harmonics. The modulated signals of a harmonic and the second harmonics are achieved by multiplier MLT04. The modulated signals contain phase-shift information of the working point of MZ modulator, providing two road signals containing phase-shift information of the working point of MZ modulator and making the whole control system more accurate. |
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| Keywords: | MZ modulator working point disturbance signal filter multiplier |
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