Fiber-optic seismometer on the basis of Mach-Zehnder interferometer

Kamenev, Oleg T.; Kulchin, Yuri N.; Petrov, Yuri S.; Khiznyak, Ruslan V.; Romashko, Roman V.

doi:10.1016/j.sna.2016.04.006

Cited by 36 publications

(8 citation statements)

References 6 publications

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“…Basically, all things are inseparable from vibration, so vibration monitoring is of great significance. Pre-warning and forecast can be realized by judging the activity regularity of potential geological hazards in the fields of geological prospecting, oil reservoirs and coal mines through micro-vibration monitoring (Gautam et al , 2019; Kamenev et al , 2016; Wang et al , 2016). The loss caused by equipment failure can be reduced by means of automatic online monitoring (Chen et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

Fiber Bragg grating based acceleration sensors: a review

Guo

Chen

et al. 2021

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Purpose The purpose of this study is to present the state of the art for fiber Bragg grating (FBG) acceleration sensing technologies from two aspects: the principle of the measurement dimension and the principle of the sensing configuration. Some commercial sensors have also been introduced and future work in this field has also been discussed. This paper could provide an important reference for the research community. Design/methodology/approach This review is to present the state of the art for FBG acceleration sensing technologies from two aspects: the principle of the measurement dimension (one-dimension and multi-dimension) and the principle of the sensing configuration (beam type, radial vibration type, axial vibration type and other composite structures). Findings The current research on developing FBG acceleration sensors is mainly focused on the sensing method, the construction and design of the elastic structure and the design of a new information detection method. This paper hypothesizes that in the future, the following research trends will be strengthened: common single-mode fiber grating of the low cost and high utilization rate; high sensitivity and strength special fiber grating; multi-core fiber grating for measuring single-parameter multi-dimensional information or multi-parameter information; demodulating equipment of low cost, small volume and high sampling frequency. Originality/value The principle of the measurement dimension and principle of the sensing configuration for FBG acceleration sensors have been introduced, which could provide an important reference for the research community.

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Section: Introductionmentioning

confidence: 99%

Fiber Bragg grating based acceleration sensors: a review

Guo

Chen

et al. 2021

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“…Many implemented interferometers are based on Bragg gratings, optic fiber, mirrors, crystals, and their combinations [1][2][3][4][5]. Interferometers find practical applications for physical parameter measurements, such as temperature, strain, humidity, pressure, level, current, voltage, and vibration [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Low-Finesse Fabry–Pérot Interferometers Applied in the Study of the Relation between the Optical Path Difference and Poles Location

Bonilla

Guillén-Bonilla

Betancourtt

et al. 2020

Sensors

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Interferometry sensors are frequently analyzed by applying the Fourier transform because the transformation separates all frequency components of its signal, making its study on a complex plane feasible. In this work, we study the relation between the optical path difference (OPD) and poles location theoretically and experimentally, using the Laplace transform and a pole-zero map. Theory and experiments are in concordance. For our study, only the cosine function was considered, which is filtered from the interference pattern. In experimental work, two unperturbed low-finesse Fabry–Pérot interferometers were used. First, a Fabry–Pérot interferometer that has a cavity length of ~ 1.6 mm was used. Its optical path difference was 2.33 mm and the poles were localized at points ± i 12 . rad/nm. Secondly, a Fabry–Pérot interferometer with a cavity length of ~ 5.2 mm was used, and its optical path difference was 7.59 mm and the poles were localized at points ± i 40.4 rad/nm. Experimental results confirmed the theoretical analysis. Our proposal finds practical application for interferometer analysis, signal processing of optical fiber sensors, communication system analysis, and multiplexing systems based on interferometers.

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“…The fiber optic seismometer has attracted the attention of many researchers since it was first proposed in the 1990s [13], and has rapidly expanded its designs and applicability in the past decades. Kamenev et al reported a fiber-optic seismometer on the basis of Mach-Zehnder interferometer, where the sensing element of the seismometer was implemented as a multiturn optical coil [14]. Zeng et al reported a mass-loaded mandrel fiber optic accelerometer designed for well-logging seismic observation, and the accelerometer can accomplish the 3-component measurement by multiplexing the three unidirectional sensing elements [15].…”

Section: Introductionmentioning

confidence: 99%

Seismic Observation and Analysis Based on Three-Component Fiber Optic Seismometer

et al. 2020

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We demonstrate a three-component fiber optic seismometer for seismic observation, with no electronics in the sensor probe, but relying exclusively on optical fiber in the form of an unbalanced Michelson interferometer, with state-of-the-art performance characteristics. The fiber optic seismometer system is installed in the seismic observation cave at the Earthquake Administration Bureau of Jilin Province, in Changchun, Jilin, China, and has been operating without interruption for more than a year. Two minor earthquakes of different magnitudes recorded by the three-component fiber optic seismometer are analyzed and discussed in detail from the perspectives of time domain and frequency domain signal quality and fidelity. In addition, the recording results of the fiber optic seismometer are compared with those of the traditional electrical-mechanical seismometer co-located at the observation site. Actual observational results of the seismic events show that the three-component fiber optic seismometer can record the seismic waves clearly, with comparable performance as the conventional seismometer. INDEX TERMS Optical fiber applications, optical interferometry, seismic measurements, vibration measurement. YUE YANG received the B.S. degree from the College of Instrumentation and Electrical Engineering, Jilin University, in 2017, where she is currently pursuing the Ph.D. degree. Her research interests are fiber optical communications and sensing.

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Fiber-optic seismometer on the basis of Mach-Zehnder interferometer

Cited by 36 publications

References 6 publications

Fiber Bragg grating based acceleration sensors: a review

Fiber Bragg grating based acceleration sensors: a review

Low-Finesse Fabry–Pérot Interferometers Applied in the Study of the Relation between the Optical Path Difference and Poles Location

Seismic Observation and Analysis Based on Three-Component Fiber Optic Seismometer

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