Journal
OPTICS EXPRESS
Volume 27, Issue 3, Pages 2327-2334Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.27.002327
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Funding
- National Natural Science Foundation of China (NSFC) [91636106, 11874213, 11621091, 61605072]
- National Key R&D Program of China [2017YFA0303703, 2016YFA0302500]
- Fundamental Research Funds for the Central Universities [021314380105]
- Australian Research Council (ARC) Centre of Excellence for Quantum Computation and Communication Technology [CE170100012]
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We experimentally demonstrate a fiber-based phase tracking system through an adaptive homodyne detection technique. In the experiment, we use a random phase signal as an example. The system works well when the random phase varies between -2.4 and + 2.4 radians. Such tracking range is much larger than previous work due to the improved performance of phase-locked loop. The minimum mean square error reaches theoretical value at a photon flux of similar to 10(6), which proves a quantum-limited fiber phase tracking. Such system has potential applications in high-precision real-time fiber sensing of temperature, strain, and so on. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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