| 单模光纤声光频率偏移装置 |
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| 引用本文： | 向永江.单模光纤声光频率偏移装置[J].南京航空航天大学学报,1989(3). |
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| 作者姓名： | 向永江 |
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| 作者单位： | 南京航空学院自动控制系 |
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| 摘 要： | 本文介绍了一种光导纤维声光频率偏移器,单模光纤由于弯曲将引起双折射,由压电晶体产生的声波通过该弯曲的单模光纤,则由一种偏振模的光耦合到另一种偏振模时,其频率将产生偏移,其偏移量为压电晶体产生的声波频率。单边带抑制可达30dB以上。
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| 关 键 词： | 单模光导纤维 双折射 压电晶体 偏振模 外差系统 |
An Acoustic-Optic Frequency Shifter Using Ordinary single-Mode Fibre |
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| Xiang Yongjiang.An Acoustic-Optic Frequency Shifter Using Ordinary single-Mode Fibre[J].Journal of Nanjing University of Aeronautics & Astronautics,1989(3). |
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| Authors: | Xiang Yongjiang |
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| Institution: | Department of Automatic Control |
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| Abstract: | An all-fibre acoustic-optic frequency shifter is reported. Bend-induced birc fringcncc is introduced in ordinary single-mode fibre. The light coupled from one polarization to the other is frequency-shifted by the frequency of travelling acoustic wave. 30dB suppression of the unwanted sideband has been achieved. |
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| Keywords: | single mode optical fibre birefringence piezoelectric crystals polarized mode heterodyne system |
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