| 法布里-珀罗滤波器的锯齿波驱动技术 |
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| 引用本文： | 吴伟伟,余有龙,李勋涛,吴文斌.法布里-珀罗滤波器的锯齿波驱动技术[J].电子科技,2012,25(8):16-19. |
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| 作者姓名： | 吴伟伟 余有龙 李勋涛 吴文斌 |
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| 作者单位： | (1.合肥工业大学 仪器科学与光电工程学院,安徽 合肥 230009;2.德赛电子科技有限公司 研发中心,广东 惠州 516029;
3.建设综合勘察研究设计院 北京综建科技有限公司,北京 100007) |
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| 摘 要： | 分析了可调法布里-珀罗滤波器的工作原理,设计了扫描滤波的驱动电路。实验中由数字电路产生锯齿波信号,并借助模拟电路进行功率放大,获得上升沿占空比达到99.90%的输出。其频率在0~50 Hz范围内可调,驱动电压的幅值和偏置电压均可在0~30 V范围内调整。为便于后续信号的采集和寻峰,在单个自由光谱程范围内,利用3次曲线拟合方式对驱动电压进行修正,波长调谐的标准差分别降低62.7%、最大误差分别降低80.1%。
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| 关 键 词： | 法布里-珀罗滤波器 锯齿波 嵌入式 非线性 |
The Drive Technology of Sawtooth Wave for Fabry-Perot Filter |
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| WU Weiwei,YU Youlong,LI Xuntao,WU Wenbin.The Drive Technology of Sawtooth Wave for Fabry-Perot Filter[J].Electronic Science and Technology,2012,25(8):16-19. |
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| Authors: | WU Weiwei YU Youlong LI Xuntao WU Wenbin |
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| Affiliation: | 1.School of Instrument Science and Opto-electronics Engineering,Heifei University of Technology,Hefei 230009,China; 2.R&D Center,DESAY Electronics,Huizhou 516029,China;3.Beijing Comprehensive Construction Company Limited,China Institute of Geotechnical Investigation and Surveying,Beijing 100007,China) |
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| Abstract: | The working principle of the tunable Fabry-Perot(F-P) filter is analyzed,and the driving circuit of the filter is designed.In the experiment,a sawtooth wave is obtained by using a digital circuit,which is amplified by an analog circuit.Thus the duty cycle of the rising edge of the sawtooth wave can amount to 99.90%.And its frequency can be adjusted from 0 to 50 Hz.Both the amplitude of the output voltage and offset can be adjusted from 0 V to 30 V.To sample and search the signal and peak more easily,the applied voltage is rectified by using the cubic fitting algorithm in a free spectral range.Experiment results show that the standard error and the maximum error of the tuning wavelength are reduced by 62.7% and 80.1%,respectively. |
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| Keywords: | F-P filter sawtooth wave embedded nonlinear |
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