Publications by authors named "Zunqi Qin"
Article Synopsis
- A new high-precision, fast-speed demodulation method is introduced for polarized low-coherence interferometry, effectively addressing location-dependent birefringence dispersion.
- It utilizes five-step phase-shifting technology to accurately identify the zero-fringe peak, eliminating ambiguity and simplifying data processing to the spatial domain.
- The method was validated in a barometric pressure sensing experiment, achieving a measurement precision of 0.091 kPa and a tenfold reduction in computation time compared to traditional Fourier transform methods.
Article Synopsis
- A new demodulation algorithm has been developed for pressure sensing in optical fiber Fabry-Perot systems, focusing on recovering the absolute phase from a chosen monochromatic frequency.
- The algorithm utilizes Fourier transform techniques to determine the relative phase and interference order, allowing for accurate phase recovery through a linear fit of unwrapped phase-frequency data.
- Experimental results demonstrate that this method achieves a pressure measurement precision of 0.15 kPa, significantly outperforming existing phase slope-based algorithms by a factor of 13.
