Nonlinear error compensation of PGC demodulation with the calculation of carrier phase delay and phase modulation depth

L Yan, Y Zhang, J **e, Y Lou, B Chen… - Journal of Lightwave …, 2021 - opg.optica.org
We propose a novel phase generated carrier (PGC) demodulation method by
simultaneously calculating the carrier phase delay (θ) and the phase modulation depth (m) …

Low-frequency optical fiber Fabry-Perot acoustic sensor based on all-phase cross-correlation demodulation

G Zhang, Z **ong, M Guo, K Chen, X Zhao… - Journal of Lightwave …, 2022 - opg.optica.org
A high-sensitivity low-frequency fiber-optic Fabry-Perot (FP) acoustic sensing scheme was
proposed based on optical cross-correlation (OCC). The finite element method (FEM) is …

A PGC-DCDM demodulation scheme insensitive to phase modulation depth and carrier phase delay in an EOM-based SPM interferometer

S Zhang, Y Chen, B Chen, L Yan, J **e, Y Lou - Optics Communications, 2020 - Elsevier
Phase modulation depth (C) and carrier phase delay (θ) are two critical factors for the phase
generated carrier (PGC) demodulation scheme. Traditional PGC demodulation schemes …

A high-stable self-referenced PGC demodulation algorithm for fiber-optic interferometric sensor

Y Yuan, J Li, Y Zhu, S Tian, Y Zhu, Z Zhu, X Zhang… - Optical Fiber …, 2023 - Elsevier
A self-referenced phase generation carrier (SR-PGC) algorithm is proposed in this paper.
The influence related to modulation depth, light intensity and carrier phase delay can be …

High stability PGC-EFA-DCM demodulation algorithm integrated with a PID module

Q Ge, J Zhu, G Zhang, Y Cui, J **ao… - Journal of Lightwave …, 2022 - ieeexplore.ieee.org
Phase generated carrier (PGC) demodulation technology has been widely used in fiber-
optic interferometric sensors while nonlinearity is always accompanying with the scheme …

Reliability demodulation algorithm design for phase generated carrier signal

C Hou, J Zhang, Y Yuan, J Yang… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Phase-generated carrier (PGC) demodulation technology has been widely used in fiber-
optic interferometric sensors system in recent years. Nonlinear errors caused by interference …

[HTML][HTML] Focus on sub-nanometer measurement accuracy: distortion and reconstruction of dynamic displacement in a fiber-optic microprobe sensor

Y Dong, W Luo, W Li, C Zhang, P Hu, H Fu… - Light: Advanced …, 2025 - light-am.com
We established a complete model and relationship between laser source characteristics and
measurement accuracy of high precision fiber microprobe sensor (FMS) based on phase …

Long range dynamic displacement: precision PGC with sub-nanometer resolution in an LWSM interferometer

Y Dong, PC Hu, H Fu, H Yang, R Yang, J Tan - Photonics Research, 2021 - opg.optica.org
We propose a precision phase-generated-carrier (PGC) demodulation method with sub-
nanometer resolution that avoids nonlinear errors in a laser wavelength sinusoidal …

Self-calibration phase demodulation scheme for stabilization based on an auxiliary reference fiber-optic interferometer and ellipse fitting algorithm

Y Wu, C Li, C Wang, B Jia - Optics Express, 2023 - opg.optica.org
To solve the problem of light source jitter and asymmetric 3?×? 3 coupler, a phase
demodulation method with the combination of an auxiliary reference interferometer and …

Ameliorated PGC demodulation technique based on the ODR algorithm with insensitivity to phase modulation depth

W Zhou, B Yu, J Zhang, J Shi, D Guang, C Zuo, S Mu… - Optics …, 2023 - opg.optica.org
For the optical fiber sensing system using phase generated carrier (PGC) technology, it is
very important to eliminate the nonlinear effect of phase modulation depth (C) fluctuation on …