Simplified phase-stable dual-comb interferometer for short dynamic range distance measurement

Zhou, Siyu; Xiong, Shoumei; Zhu, Zebin; Wu, Guanhao

doi:10.1364/oe.27.022868

Cited by 26 publications

(3 citation statements)

References 32 publications

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“…In our previous studies, using an optical frequency comb as the light source combined with a GCC sensor, precise and rapid measurements of the absolute distances, yaw, and pitch angles could be achieved by resolving the interferometric phase spectra of the corresponding diffraction beams [ 23 , 24 , 25 ]. Combined with the method proposed in this paper, the proposed technique could be used to simultaneously measure six degrees of freedom.…”

Section: Discussionmentioning

confidence: 99%

Grating-Corner-Cube-Based Roll Angle Sensor

Zhou

et al. 2020

Sensors

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This paper presents a specifically designed grating-corner-cube sensor for precise roll angle measurements. Owing to the diffraction characteristics of the transmission grating and reflection characteristics of the corner cube, two spatially separated parallel beams are naturally constructed. Through differential detection of the positions of two parallel beams, we experimentally demonstrate the possibility of a precise roll angle measurement at a high refresh rate. A performance evaluation of the proposed technique indicates a stability of 0.46 arcsec over 5 min. Compared with a commercial autocollimator over a range of 500 arcsec, the residuals are maintained within ±2 arcsec with a standard deviation of 1.37 arcsec. Furthermore, a resolution of 0.8 arcsec can be achieved using the proposed method. The developed compact roll angle sensor has potential applications in academic and industrial fields.

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Section: Discussionmentioning

confidence: 99%

Grating-Corner-Cube-Based Roll Angle Sensor

Zhou

et al. 2020

Sensors

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“…In contrast to incremental relative displacement measurement (RDM), ADM using FSI has an unlimited unambiguity range in principle without working with extra mechanical guidance (which is impractical in large volume metrology like aerospace manufacturing and assembly). Compared to other ADM techniques, including time of flight, multi-wavelength interferometry [9][10][11], and interferometry based on optical frequency comb [12][13][14][15], FSI is a truly absolute, single-stage distance measurement technique with sufficient accuracy, and it is more suitable for practical applications owing to its compactness, excellent flexibility and cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Absolute distance measurement using frequency sweeping interferometry with large swept range and target drift compensation

Zhang

Hao

Zhang

et al. 2023

Meas. Sci. Technol.

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Frequency sweeping interferometry (FSI) is an attractive absolute distance measurement (ADM) method because of the advantages of large unambiguity range, simple structure and excellent flexibility. By using reference interferometer, the calibration of the frequency sweeping range in FSI can be avoided, and the complexity and cost of the system can be further reduced. Then, the measurement accuracy is associated with the accuracy of phase demodulation, the width of frequency sweeping range and the compensation of target drift. In this paper, ADM using FSI with large swept range and target drift compensation is presented. An incremental interferometer which has a complete common path with the swept source laser was employed to monitor the target drifts of the measurement and reference interferometer. Interference phases of the corresponding interferometers were extracted simultaneously using phase generated carrier (PGC) demodulation technique, and an accuracy better than 1° was verified by nanometer displacement measurement. Comparative experiments of ADM at a distance of ~ 4.5 m with different swept ranges and before and after target drift compensation were carried out, and the results demonstrated that larger swept range and target drift compensation could greatly improve the stability and accuracy of measurement.

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“…Here, frep,2 is the repetition rate of the comb used for the remote sensing and ∆frep is the difference to the repetition rate frep,1 of the local reference comb. As these systems depend on a complex light source (two phase-stable frequency combs), different methods have been presented to simplify them while further improving their accuracy and precision [23,25,12]. Via additional evaluation of the interferogram carrier phases, for example, it is possible to achieve wavelength resolution.…”

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confidence: 99%

Simple approach for extending the ambiguity-free-range of dual-comb ranging

Fellinger,

Winkler,

Aldia

et al. 2021

Preprint

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Dual-comb (DC) ranging is an established method for high-precision and high-accuracy distance measurements. It is, however, restricted by an inherent length ambiguity and the requirement for complex control loops for comb stabilization. Here, we present a simple approach for expanding the ambiguity-free measurement length of dual-comb ranging by exploiting the intrinsic intensity modulation of a single-cavity dual-color DC for simultaneous time-of-flight and DC distance measurements. This measurement approach enables the measurement of distances up to several hundred km with the precision and accuracy of a dual-comb interferometric setup while providing a high data acquisition rate (≈ 2 kHz) and requiring only the repetition rate of one of the combs to be stabilized.Recent progress in automation and metrology in various fields of application such as industrial robotics or autonomous transportation has led to an increasing demand for

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Simplified phase-stable dual-comb interferometer for short dynamic range distance measurement

Cited by 26 publications

References 32 publications

Grating-Corner-Cube-Based Roll Angle Sensor

Grating-Corner-Cube-Based Roll Angle Sensor

Absolute distance measurement using frequency sweeping interferometry with large swept range and target drift compensation

Simple approach for extending the ambiguity-free-range of dual-comb ranging

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