Research on FP Interferometric Fiber Optic Microphone Based on Symmetrical Three Wavelength Phase Demodulation
Research on Fabry-Pérot(FP)interferometric fiber optic microphone based on symmetrical three wavelength phase demodulation,using real-time normalization algorithm and arctangent algorithm to restore sound signals.In the real-time normalization algorithm,the combination of symmetric three wavelength and parameter real-time normalization estimation methods has achieved normalization of two signals,reducing the impact of laser operating wavelength,output power,and resonant cavity length on the performance of fiber optic microphones.In the arctangent algorithm,the sound signal is accurately reconstructed through arctangent and phase accumulation.
phase demodulationsymmetric three wavelengthfiber optic microphone
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