Noise analysis and optimization for PGC method

Zhiguang Dai; Changdong Tian; Kai Wang; Liwei Wang; Min Zhang; Yanbiao Liao

doi:10.1117/12.966819

7 November 2012 Noise analysis and optimization for PGC method

Zhiguang Dai, Changdong Tian, Kai Wang, Liwei Wang, Min Zhang, Yanbiao Liao

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84218A (2012) https://doi.org/10.1117/12.966819
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We analyze the transfer factor for phase noise (NTF_φ) of PGC system. According to NTF_φ , we optimize the system phase noise performance by setting proper working point. Since we use hydrophones with the same Distributed Feedback (DFB) laser, the noise from laser resource takes the leading post. We build up the theory model of correlation coefficients, and demonstrated a new system using a reference interferometer with 32 coupler. The homologous noise is eliminated. We get output noise with the PSD (Power Spectral Density) 8.5dB higher than that of circuit noise and 14dB higher than that of DC intensity noise.

Citation Download Citation

Zhiguang Dai, Changdong Tian, Kai Wang, Liwei Wang, Min Zhang, and Yanbiao Liao "Noise analysis and optimization for PGC method", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84218A (7 November 2012); https://doi.org/10.1117/12.966819

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