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Digital demodulation technique for fiber-optic hydrophones based on 3 × 3 couplers

✍ Scribed by Yu Chen; De-sheng Chen

Book ID
107509754
Publisher
Tianjin University of Technology
Year
2010
Tongue
English
Weight
397 KB
Volume
6
Category
Article
ISSN
1673-1905

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✍ Xiujuan Feng; Chunxi Zhang; Sheng Liang; Chuansheng Li; Chaoyang Zhang 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 473 KB

## Abstract A novel digital active homodyne demodulation scheme to eliminate the signal fading in interferometric fiber‐optic sensors is proposed. The error signal is obtained by the square‐wave phase modulation and then the digital correlation detection technique is applied to demodulate the low‐f