In-Fiber Auxiliary Interferometer to Compensate Laser Nonlinear Tuning in Simplified OFDR

Yin, Guolu; Jiang, Rui; Zhu, Tao

doi:10.1109/jlt.2021.3123725

Cited by 12 publications

(2 citation statements)

References 27 publications

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“…Due to the existence of the nonlinear sweep effect of the laser, a non-uniform beat signal is generated. If the Fourier transform is directly performed on the original signal, it is expected to be able to observe the diffusion of the bandwidth and the energy in the distance domain, and hence the spatial resolution of the OFDR system is eventually degraded [25]. In order to address this problem, an auxiliary interferometer is constructed in the OFDR system, and the instantaneous laser frequency can be obtained by the Hilbert transform.…”

Section: Principlesmentioning

confidence: 99%

High-Resolution and Large-Sensing-Range Liquid-Level Sensor Based on Optical Frequency Domain Reflectometry and No-Core Fiber

Yin

Yang

et al. 2022

Sensors

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Liquid-level sensors are required in modern industrial and medical fields. Optical liquid-level sensors can solve the safety problems of traditional electrical sensors, which have attracted extensive attention in both academia and industry. We propose a distributed liquid-level sensor based on optical frequency domain reflectometry and with no-core fiber. The sensing mechanism uses optical frequency domain reflectometry to capture the strong reflection of the evanescent field of the no-core fiber at the liquid–air interface. The experimental results show that the proposed method can achieve a high resolution of 0.1 mm, stability of ±15 μm, a relatively large measurement range of 175 mm, and a high signal-to-noise ratio of 30 dB. The sensing length can be extended to 1.25 m with a weakened signal-to-noise ratio of 10 dB. The proposed method has broad development prospects in the field of intelligent industry and extreme environments.

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Section: Principlesmentioning

confidence: 99%

High-Resolution and Large-Sensing-Range Liquid-Level Sensor Based on Optical Frequency Domain Reflectometry and No-Core Fiber

Yin

Yang

et al. 2022

Sensors

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“…Laser coherence plays an important role in laser precision measurement technology, such as coherent optical communication [1] [2], light detection and ranging (LiDAR) [3] [4], fiber sensing [5] [6] [7], and so on. In the LiDAR system and optical fiber communication system, the laser coherence affects its detection range [8] [9] [10].…”

Section: Introductionmentioning

confidence: 99%

Coherent Parameter Measurement Based on Partial Coherent Envelope Demodulation

Zhang¹,

Dang²,

Guan³

et al. 2023

OPJ

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Results of publication (only one response allowed):  are still valid. Xwere found to be overall invalid. Author's conduct (only one response allowed):  honest error  academic misconduct Xnone (not applicable in this casee.g. in case of editorial reasons) * Also called duplicate or repetitive publication. Definition: "Publishing or attempting to publish substantially the same work more than once." History Expression of Concern:  yes, date: yyyy-mm-dd Xno Correction:  yes, date: yyyy-mm-dd Xno Comment:This article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. Aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused.

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High-spatial-resolution OFDR with single interferometer using self-compensation method

Zhong

Fu²,

Wang³

et al. 2023

Optics and Lasers in Engineering

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In-Fiber Auxiliary Interferometer to Compensate Laser Nonlinear Tuning in Simplified OFDR

Cited by 12 publications

References 27 publications

High-Resolution and Large-Sensing-Range Liquid-Level Sensor Based on Optical Frequency Domain Reflectometry and No-Core Fiber

High-Resolution and Large-Sensing-Range Liquid-Level Sensor Based on Optical Frequency Domain Reflectometry and No-Core Fiber

Coherent Parameter Measurement Based on Partial Coherent Envelope Demodulation

High-spatial-resolution OFDR with single interferometer using self-compensation method

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