Multiple self-mixing interferometry algorithm based on phase modulation for vibration measurement

Jiang, Chunlei; Li, Chengwei; Yin, Shi; Huang, Zhen

doi:10.1007/s11082-017-0951-5

Cited by 14 publications

(7 citation statements)

References 26 publications

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“…Likewise, α parameter was also varied, by using typical values in the range of [3][4][5][6][7] associated with Fabry-Perot based laser diodes typically used for SM sensing. As opposed to impact of C, the impact of variation in α is secondary on TFSP performance.…”

Section: A Tfsp Performance As a Function Of C And αmentioning

confidence: 99%

“…Displacement sensing with a resolution of half-wavelength λ0/2 can be easily achieved with a basic SM sensor under moderate optical feedback (OF) regime [3,4]. The basic resolution can be improved by locking the laser phase to midfringe [5] or by fringe duplication [6,7] or by utilizing phase unwrapping techniques. Different phase unwrapping techniques (based on time-domain SM signal processing) have been proposed in literature [8][9][10][11][12][13][14] providing accuracy from λ0/8 to λ0/60.…”

mentioning

confidence: 99%

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Spectral Processing of Self-Mixing Interferometric Signal Phase for Improved Vibration Sensing Under Weak- and Moderate-Feedback Regime

et al. 2019

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Technology of Pakistan. His current research interests include magnetic field based measurement and monitoring for power systems, magnetic energy harvesters and innovative instrumentation problems. Thierry Bosch (M'93-SM'06) is a Professor with Institut National Polytechnique Toulouse-ENSEEIHT and member of the Optoelectronics for Embedded Systems Research Group, LAAS-CNRS. His research interests include laser industrial instrumentation development, including range finding techniques, vibration and velocity measurements. He is presently Vice President of IEEE IM France.

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Section: A Tfsp Performance As a Function Of C And αmentioning

confidence: 99%

mentioning

confidence: 99%

Spectral Processing of Self-Mixing Interferometric Signal Phase for Improved Vibration Sensing Under Weak- and Moderate-Feedback Regime

et al. 2019

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“…Displacement measurement with a basic resolution of a half-wavelength (

/2) can be easily achieved with an OFI sensor under a optical feedback regime by fringe counting [ 1 ]. The basic resolution can be improved by locking the laser phase to a half-wavelength [ 4 ] or by fringe duplication [ 5 , 6 ] or by utilizing phase unwrapping techniques. Different phase unwrapping techniques (based on time-domain OFI signal processing) have been proposed in the literature [ 7 , 8 , 9 , 10 , 11 , 12 , 13 ], providing accuracy from

/8 to

/60.…”

Section: Introductionmentioning

confidence: 99%

Toward an Estimation of the Optical Feedback Factor C on the Fly for Displacement Sensing

Bernal

Zabit

Jayat

et al. 2021

Sensors

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In this paper, a method based on the inherent event-based sampling capability of laser optical feedback interferometry (OFI) is proposed to assess the optical feedback factor C when the laser operates in the moderate and strong feedback regimes. Most of the phase unwrapping open-loop OFI algorithms rely on the estimation of C to retrieve the displacement with nanometric precision. Here, the proposed method operates in open-loop configuration and relies only on OFI’s fringe detection, thereby improving its robustness and ease of use. The proposed method is able to estimate C with a precision of <5%. The obtained performances are compared to three different approaches previously published and the impacts of phase noise and sampling frequency are reported. We also show that this method can assess C on the fly even when C is varying due to speckle. To the best of the authors’ knowledge, these are the first reported results of time-varying C estimation. In addition, through C estimation over time, it could pave the way not only to higher performance phase unwrapping algorithms but also to a better control of the optical feedback level via the use of an adaptive lens and thus to better displacement retrieval performances.

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“…Displacement measurement with a basic resolution of halfwavelength (λ 0 /2) can be easily achieved with an OFI sensor under moderate optical feedback regime by fringe counting [1]. The basic resolution can be improved by locking the laser phase to half-wavelength [4] or by fringe duplication [5], [6] or by utilizing phase unwrapping techniques. Different phase unwrapping techniques (based on time-domain OFI signal processing) have been proposed in literature [7], [8], [9], [10], [11], [12], [13] providing accuracy from λ 0 /8 to λ 0 /60.…”

Section: Introductionmentioning

confidence: 99%

Sub-λ/2 Displacement Sensor With Nanometric Precision Based on Optical Feedback Interferometry Used as a Non-Uniform Event-Based Sampling System

et al. 2020

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In this paper, a method based on the inherent event-based sampling capability of the laser optical feedback interferometry (OFI) is proposed to recover sub-λ/2 displacement with a nanometric precision. The proposed method operates in open-loop configuration and relies on OFI's fringe detection, thereby improving its robustness and ease of use. The measured white noise power spectral density is less than 100 pm/ √ Hz with a corner noise frequency of approximately 80 Hz for a laser diode emitting wavelength λ0 of 785 nm placed at 30 cm of the target.

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Multiple self-mixing interferometry algorithm based on phase modulation for vibration measurement

Cited by 14 publications

References 26 publications

Spectral Processing of Self-Mixing Interferometric Signal Phase for Improved Vibration Sensing Under Weak- and Moderate-Feedback Regime

Spectral Processing of Self-Mixing Interferometric Signal Phase for Improved Vibration Sensing Under Weak- and Moderate-Feedback Regime

Toward an Estimation of the Optical Feedback Factor C on the Fly for Displacement Sensing

Sub-λ/2 Displacement Sensor With Nanometric Precision Based on Optical Feedback Interferometry Used as a Non-Uniform Event-Based Sampling System

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