光学学报, 2019, 39 (1): 0106001, 网络出版: 2019-05-10
基于相位解调的双光束薄膜干涉型光纤传声器 
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Double-Beam Thin-Film Interferometric Fiber Microphone Based on Phase Demodulation
图 & 表
图 1. 基于相位解调的双光束薄膜干涉型光纤传声器的工作原理示意图
Fig. 1. Working principle of double-beam thin-film interferometric fiber microphone based on phase demodulation
图 2. 双光束薄膜干涉型光纤传声器的结构示意图
Fig. 2. Structural diagram of double-beam thin-film interferometric fiber microphone
图 4. 不同声信号频率下,基于相位解调的双光束薄膜干涉型光纤传声器的输出情况。(a) 500 Hz; (b) 1000 Hz; (c) 2000 Hz
Fig. 4. Outputs of double-beam thin-film interferometric fiber microphone based on phase demodulation under different signal frequencies. (a) 500 Hz; (b) 1000 Hz; (c) 2000 Hz
图 5. 不同相位差偏差下,基于相位解调的双光束薄膜干涉型光纤传声器的输出情况。(a) 5°; (b) 10°; (c) 15°
Fig. 5. Outputs of double-beam thin-film interferometric fiber microphone based on phase demodulation under different deviations of phase difference. (a) 5°; (b) 10°; (c) 15°
图 6. 不同DC分项和AC分项的偏差下,基于相位解调的双光束薄膜干涉型光纤传声器的输出情况。(a) 5%; (b) 10%; (c) 15%
Fig. 6. Outputs of double-beam thin-film interferometric fiber microphone based on phase demodulation under different deviations of DC subentry and AC subentry. (a) 5%; (b) 10%; (c) 15%
图 7. 基于相位解调的双光束薄膜干涉型光纤传声器的测试装置图
Fig. 7. Experimental setup of double-beam thin-film interferometric fiber microphone based on phase demodulation
图 8. 双光束薄膜干涉型光纤传声器的传输光谱
Fig. 8. Transmission spectrum of double-beam thin-film interferometric fiber microphone
图 9. 不同声信号频率下,基于相位解调的双光束薄膜干涉型光纤传声器的测试结果。(a) 500 Hz; (b) 1000 Hz; (c) 2000 Hz
Fig. 9. Test results of double-beam thin-film interferometric fiber microphone based on phase demodulation for different signal frequencies. (a) 500 Hz; (b) 1000 Hz; (c) 2000 Hz
周瑜, 刘超, 王坤博, 魏晓村. 基于相位解调的双光束薄膜干涉型光纤传声器[J]. 光学学报, 2019, 39(1): 0106001. Yu Zhou, Chao Liu, Kunbo Wang, Xiaocun Wei. Double-Beam Thin-Film Interferometric Fiber Microphone Based on Phase Demodulation[J]. Acta Optica Sinica, 2019, 39(1): 0106001.
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