Extraction of Carrier Phase Delay for Nonlinear Errors Compensation of PGC Demodulation in an SPM Interferometer

Xie, Jiandong; Yan, Liping; Chen, Benyong; Lou, Yingtian

doi:10.1109/jlt.2019.2917041

Cited by 48 publications

(9 citation statements)

References 26 publications

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“…In ideal conditions, the real-time angle variation can be derived accurately by using the PGC-Arctan demodulation algorithm introduced above. However, there exist several factors influencing the measurement accuracy in the PGC-Arctan demodulation algorithm, such as the modulation depth deviation [ 16 ] and carrier phase delay [ 17 ], as well as the carrier frequency and sampling rate.…”

Section: Theoretical Analysis and Simulationsmentioning

confidence: 99%

Sinusoidal Phase-Modulated Angle Interferometer for Angular Vibration Measurement

Wang

Yang

Chen

et al. 2021

Sensors

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Primary angular vibration calibration devices based on laser interferometers play a crucial role in evaluating the dynamic performance of inertial sensing devices. Here, we propose a sinusoidal phase-modulated angle interferometer (SPMAI) to realize angular vibration measurements over a frequency range of 1–1000 Hz, in which the sinusoidal measurement retro-reflector (SMR) and the phase generation carrier (PGC) demodulation algorithm are adopted to track the dynamic angle variation. A comprehensive theoretical analysis is presented to reveal the relationship between demodulation performance of the SPMAI and several factors, such as phase modulation depth, carrier phase delay and sampling frequency. Both the simulated and experimental results demonstrate that the proposed SPMAI can achieve an angular vibration measurement with amplitude of sub-arcsecond under given parameters. Using the proposed SPMAI, the frequency bandwidth of an interferometric fiber-optic gyroscope (IFOG) is successfully determined to be 848 Hz.

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Section: Theoretical Analysis and Simulationsmentioning

confidence: 99%

Sinusoidal Phase-Modulated Angle Interferometer for Angular Vibration Measurement

Wang

Yang

Chen

et al. 2021

Sensors

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“…DWDM systems for long‐haul transmission of 110 km with 32 number of channels has been reported in Reference to mitigate nonlinear effects. Reference explains the influence of phase delay and modulation depth using direct extraction method. In Reference , the authors propose soliton transmission by solving nonlinear Schrodinger equations with reciprocal of group velocity dispersion.…”

Section: Introductionmentioning

confidence: 99%

Extenuation of phase shift influenced nonlinear impairments in fiber optics network

Ali

Khan

Muhammad

et al. 2020

Trans Emerging Tel Tech

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Transmission of ultrahigh data rates through fiber optics networks (FONs) over long transmission distances in an intensity-dependent refractive index medium suffers from nonlinear self-steepening (NSS) and stimulated Raman scattering (SRS). In this paper, a FON model is proposed to compensate NSS and SRS impairments, using a theoretical model and its verification through simulation for different set of parameters. The proposed FON is designed to support 8, 16, and 32 channels with dual polarization quadrature phase shift keying modulation format. The analysis is performed for a range of values for the transmission medium including nonlinear effective area, nonlinear refractive index, and nonlinear dispersion. Moreover, the performance of the proposed model is evaluated in terms of launch power, polarization variations, received power, and length of transmission fiber. The overall work is analyzed for transmission distances up to 1200 km for performance metric of bit error rate, eye diagram, and received symbols constellations diagram. Trans Emerging Tel Tech. 2020;31:e3930. wileyonlinelibrary.com/journal/ett

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“…J. D. Xie et al proposed a method to obtain carrier phase delay by robust extraction. The method uses the first, second, and fourth order orthogonal harmonic components to eliminate nonlinear error of PGC demodulation algorithm [24].…”

Section: Introductionmentioning

confidence: 99%

Automatic carrier phase delay synchronization of PGC demodulation algorithm in fiber-optic interferometric sensors

Hou¹,

Guo²

2020

KSII TIIS

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Phase-generated carrier (PGC) demodulation algorithm is the main demodulation methods in Fiber-optic interferometric sensors (FOISs). The conventional PGC demodulation algorithms are influenced by the carrier phase delay between the interference signal and the carrier signal. In this paper, an automatic carrier phase delay synchronization (CPDS) algorithm based on orthogonal phase-locked technique is proposed. The proposed algorithm can calculate the carrier phase delay value. Then the carrier phase delay can be compensated by adjusting the initial phase of the fundamental carrier and the second-harmonic carrier. The simulation results demonstrate the influence of the carrier phase delay on the demodulation performance. PGC-Arctan demodulation system based on CPDS algorithm is implemented on SoC. The experimental results show that the proposed algorithm is able to obtain and eliminate the carrier phase delay. In comparison to the conventional demodulation algorithm, the signal-to-noise and distortion ratio (SINAD) of the proposed algorithm increases 55.99dB.

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Extraction of Carrier Phase Delay for Nonlinear Errors Compensation of PGC Demodulation in an SPM Interferometer

Cited by 48 publications

References 26 publications

Sinusoidal Phase-Modulated Angle Interferometer for Angular Vibration Measurement

Sinusoidal Phase-Modulated Angle Interferometer for Angular Vibration Measurement

Extenuation of phase shift influenced nonlinear impairments in fiber optics network

Automatic carrier phase delay synchronization of PGC demodulation algorithm in fiber-optic interferometric sensors

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