Improved phase-generated carrier demodulation technique based on LM algorithm with low harmonic distortion and high stability

被引：0

作者：

Zhou, Mingyuan ^{[1
,2
]}

Yu, Benli ^{[1
,2
]}

Shi, Jinhui ^{[1
,2
]}

Zhou, Wen ^{[1
,2
]}

Fang, Chongxu ^{[1
,2
]}

Gong, Yuanfei ^{[1
,2
]}

Zuo, Cheng ^{[1
,2
]}

Zhang, Jihao ^{[1
,2
]}

机构：

[1] Anhui Univ, Key Lab Optoelect Informat Acquisit & Manipulat, Minist Educ, Jiulong Rd 111, Hefei 230601, Peoples R China

[2] Anhui Univ, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China

来源：

OPTICAL FIBER TECHNOLOGY | 2024年 / 87卷

基金：

中国国家自然科学基金;

关键词：

Fiber-optic interferometric sensor; Phase generated carrier (PGC) demodulation; Phase modulation depth; Arctangent technology; LM algorithm; PGC-ARCTAN DEMODULATION; MODULATION DEPTH; PRESSURE SENSOR; INTERFEROMETER; INTERROGATION; COMPENSATION; NONLINEARITY; NOISE; DELAY; AOIM;

D O I：

10.1016/j.yofte.2024.103735

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a multi-harmonic mixing demodulation scheme based on Levenberg-Marquardt (LM) algorithm, called PGC-LM-Arctan, is proposed to eliminate the influence of phase modulation depth on demodulation results. The relation between the C value and ratio of Bessel function is fitted by LM algorithm, and then the ratio of fourth harmonic and second harmonic is substituted into the above relation. The C value is calculated to eliminate the influence of coefficients on the demodulation results in Arctan algorithm. The experimental results show that when the modulation depth is from 1.5 rad to 4.8 rad, the harmonic distortion of the improved algorithm is lower than 0.7 %, which keeps the best level of the traditional PGC algorithm. The signal-to-noise-anddistortion-ratio is 41.69 dB, which is 17.58 dB higher than the traditional PGC-Arctan algorithm.

引用

页数：8

共 36 条

[31] All polarization-maintaining fiber optic hydrophone based on phase generated carrier modulation/demodulation technique
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Bandaoti Guangdian, 2006, 1 (12-15):
[32] An improved sensitivity normalization technique of PGC demodulation with low minimum phase detection sensitivity using laser modulation to generate carrier signal
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[33] High-Stability PGC Demodulation Algorithm Based On a Reference Fiber-Optic Interferometer With Insensitivity to Phase Modulation Depth
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[34] Optical fiber distributed vibration sensor based on dual Mach-Zehnder interferometer using an improved phase generated carrier algorithm
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[35] High-performance programmable AC power source with low harmonic distortion using DSP-based repetitive control technique
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Ou, RS
Jung, SL
Chang, MY
IEEE TRANSACTIONS ON POWER ELECTRONICS, 1997, 12 (04) : 715 - 725
[36] A high-speed and high-precision phase-shift demodulation algorithm for optical fiber sensing system based on low-coherence interference
Wang, Shaohua
Jiang, Junfeng
Liu, Tiegen
Liu, Kun
Yin, Jinde
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Wang, Shuang
Qin, Zunqi
Zhang, Yimo
22ND INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, PTS 1-3, 2012, 8421

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