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Proceedings Paper

Noise floor analysis of the phase demodulation scheme using a 3×3 coupler
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Paper Abstract

The noise floor of the phase demodulation scheme using a 3×3 coupler was analyzed, where the signal was demodulated by linear combination of the three outputs and digital inverse arctangent approach. According to our study, the noise floor has connection with the noise intensity, noise correlation and initial phase. The approximate expressions to calculate the noise floor were deduced and validated by simulations with input Gaussian white noise. Experiment results show that the predicted noise floor distribution as a function of initial phase agreed well with the experiment results. The noise floor of the experiment system was below 0.70 μrad/√Hz@1kHz.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842195 (7 November 2012); doi: 10.1117/12.973676
Show Author Affiliations
Huayong Zhang, Tsinghua Univ. (China)
National Ocean Technology Ctr. (China)
Min Zhang, Tsinghua Univ. (China)
Yanbiao Liao, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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