Digital phase demodulation for low-coherence interferometry-based fiber-optic sensors
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2017.11.002
Abstract: Abstract We describe a digital phase demodulation scheme for low-coherence interferometry-based fiber-optic sensors by employing a simple generation of phase-shifted signals at the interrogation interferometer. The scheme allows a real-time calibration process and offers capability… read more here.
Keywords: phase; digital phase; coherence; phase demodulation ... See more keywords
A Novel Spectral-Efficient Coherent Radio-Over-Fiber Link With Linear Digital-Phase Demodulation
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2019.2946385
Abstract: In this paper, a novel spectral-efficient coherent radio-over-fiber (RoF) link with linear digital phase demodulation is proposed and experimentally demonstrated. At the transmitter, to make an efficient use of the optical power and spectra, an… read more here.
Keywords: digital phase; linear digital; phase demodulation; phase ... See more keywords
Phase Demodulation Strategy Based on Kalman Filter for Sinusoidal Encoders
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2023.3264846
Abstract: A phase demodulation strategy based on the Kalman filter for sinusoidal encoders is proposed in this article. For the state equation and observation equation in the constructed phase demodulation model, phase angle, phase angular speed,… read more here.
Keywords: phase demodulation; demodulation strategy; kalman filter; phase ... See more keywords
2-D Phase Demodulation for Deformable Fingerprint Registration
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Information Forensics and Security"
DOI: 10.1109/tifs.2018.2841849
Abstract: Fingerprint matching with elastic distortion is very challenging to deal with, and severe fingerprint distortion usually leads to false non-matches. This paper proposes a phase-based registration algorithm which can effectively eliminate the distortion between fingerprints… read more here.
Keywords: fingerprint registration; fingerprint; phase demodulation; distortion ... See more keywords
Phase demodulation method in phase-sensitive OTDR without coherent detection.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.004831
Abstract: A phase demodulation method specially developed for direct detection φ-OTDR is proposed and demonstrated. It is the only method to date that can be used for phase demodulation based on pure direct detection system. As… read more here.
Keywords: demodulation method; phase demodulation; phase; detection ... See more keywords
An approach for linear optical phase demodulation using a single photodetector.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.485403
Abstract: In this paper, we propose and experimentally verify a phase-modulated radio-over-fiber (RoF) link capable of transmitting the radio frequency (RF) signal linearly. By executing the Kramers-Kronig (KK) algorithm at the receiver, the proposed link can… read more here.
Keywords: phase demodulation; phase; optical phase; single photodetector ... See more keywords