A scheme for maintaining phase modulation amplitude at best value of fiber optic sensors using phase generated carrier

Jianhui Zhu; Min Zhang; Yanbiao Liao; Wu Kuang; Liwei Wang

doi:10.1117/12.630228

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5 November 2005 A scheme for maintaining phase modulation amplitude at best value of fiber optic sensors using phase generated carrier

Jianhui Zhu, Min Zhang, Yanbiao Liao, Wu Kuang, Liwei Wang

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Proceedings Volume 5998, Sensors for Harsh Environments II; 59980Q (2005) https://doi.org/10.1117/12.630228
Event: Optics East 2005, 2005, Boston, MA, United States

Abstract

This article firstly gives out when the phase modulation amplitude is at best value of homodyne demodulation using phase generated carrier, and then presents three methods that can be realized to get the best value. Some differences based on practicality are made among them, and a method which is easy to be implemented by digital circuits, is chosen to be carried out by digital circuits. Also this paper gives out simulation analysis and real experiment results. The error range is from -3.80% to 2.11% with real system. The origins of the error limiting the accuracy are discussed.

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Jianhui Zhu, Min Zhang, Yanbiao Liao, Wu Kuang, and Liwei Wang "A scheme for maintaining phase modulation amplitude at best value of fiber optic sensors using phase generated carrier", Proc. SPIE 5998, Sensors for Harsh Environments II, 59980Q (5 November 2005); https://doi.org/10.1117/12.630228

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