UV Adhesive Diaphragm-Based FPI Sensor for Very-Low-Frequency Acoustic Sensing

Liu, Li; Lü, Ping; Wang, Shun; Fu, Xin; Sun, Yuan; Liu, Deming; Zhang, Jiangshan; Xu, Huiwen; Yao, Qiuping

doi:10.1109/jphot.2015.2509866

Cited by 41 publications

(27 citation statements)

References 24 publications

(31 reference statements)

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“…Therefore, according to references [ 17 , 18 , 19 , 20 , 21 , 22 , 23 ], the basic sensing principle of this type of sensor can be expressed by the relationship between the final reflection spectrum and the incident light wavelength, namely

…”

Section: Methodsmentioning

confidence: 99%

“…In fact, fiber-optic F-P sensors can be divided into intrinsic and extrinsic sensors [ 11 , 12 , 13 , 14 ], and at present, the latter can be considered as the most extensive and popular fiber-optic F-P sensors owing to their simple structure, easy design and manufacturing process, and so on [ 15 , 16 , 17 , 18 ]. Additionally, extrinsic sensors have been mainly used in any research field needing acoustic sensing technology [ 19 , 20 , 21 , 22 , 23 ]. In fact, PDs can instantly compress surrounding media, thereby making surrounding media vibrate, which can produce acoustic signals [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

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A Large-Area and Nanoscale Graphene Oxide Diaphragm-Based Extrinsic Fiber-Optic Fabry–Perot Acoustic Sensor Applied for Partial Discharge Detection in Air

Wang

Chen

2020

Nanomaterials

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This article presents an extrinsic fiber-optic acoustic sensor applied for partial discharge (PD) detection in air. A Fabry–Perot (F-P) cavity consisting of a single-mode fiber (SMF) and a graphene oxide (GO) film, whose thickness and effective vibration diameter are approximately 500 nm and 4.377 mm, respectively, is used as this sensing core, and the manufacturing process of GO diaphragms and this sensing probe is illustrated to be simple and controllable. Performance tests indicate that this proposed sensor maintains a linear acoustic-pressure response and a flat frequency response in the range of 200 Hz to 20 kHz, while being an omnidirectional sensor and having high working stability during a ten-day test period. Additionally, PD detection results show that the minimum PD size detected by this proposed sensor in air was approximately 100 pC, which demonstrates that this proposed sensor can achieve high-sensitivity PD detection in air.

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…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Large-Area and Nanoscale Graphene Oxide Diaphragm-Based Extrinsic Fiber-Optic Fabry–Perot Acoustic Sensor Applied for Partial Discharge Detection in Air

Wang

Chen

2020

Nanomaterials

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“…Through theoretical simulation and experimental verification, the sensor can effectively detect low-frequency infrasound signals of 1-20 Hz. At the same time, an optical fiber infrasound sensor based on ultraviolet adhesive diaphragm is introduced in Wuhan National Laboratory, which shows good acoustic response between 1 Hz and 20 kHz [17]. Subsequently, an acoustic sensor was proposed [18], in which a tapered optical fiber was attached to a nitrile-butadiene diaphragm.…”

Section: A Optical Fiber Acoustic Sensors Based On Fpimentioning

confidence: 99%

A Comprehensive Study of Optical Fiber Acoustic Sensing

et al. 2019

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The optical fiber acoustic sensing system is suitable for long-distance monitoring of the acoustic signals generated by the external disturbances. According to the continuity of sensing units, quasi-distributed and distributed optical fiber acoustic sensing technologies are differentiated to meet different application requirements. On the one hand, the recent progress of Fabry-Perot interferometer (FPI) focusing on the diaphragm material, and the research hotspots in the field of the continuous Fiber Bragg grating (FBG) array are firstly reviewed. On the other hand, Mach-Zehnder interferometry (MZI), Michelson interferometry (MI), and Sagnac interferometry (SI) have rapidly developed in the aspect of the demodulation algorithm optimization with the purpose of the sensing performance improvement. Moreover, the current primary research works of the phase-sensitive optical time-domain reflectometer (ϕ-OTDR) are the signalto-noise ratio improvement and the mixed optical structure design. Finally, this paper presents an overview of the recent advances of optical fiber acoustic sensing system in the application domains of military defense, structural health monitoring, petroleum exploration, and development. INDEX TERMS Acoustic detection, distributed acoustic sensing, optical fiber sensing, ϕ-OTDR, structural health monitoring.

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“…Frequency of the acoustic waves among them extends from infrasound to ultrasonic and hence there are pressing needs to detect such wide band acoustic signal. Diaphragm-based fiber optic acoustic sensors have attracted much interest because of their high sensitivity [8]- [10], wide frequency band [11]- [13], and high dynamic range [14]. Several diaphragms have been used to detect acoustics waves, such as metal (silver [8], [15], gold [16], [17]), two dimension materials (graphene oxide [11]), graphene [12], [13], silicon nitride [18], [19], and polymer (PPESK [20], PET [21]- [23]).…”

Section: Introductionmentioning

confidence: 99%

High Sensitivity and High Stability Dual Fabry-Perot Interferometric Fiber-Optic Acoustic Sensor Based on Sandwich-Structure Composite Diaphragm

Zhang

Lü

et al. 2021

IEEE Photonics J.

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A dual Fabry-Perot (FP) interferometric fiber-optic acoustic sensor based on sandwich-structure composite diaphragm is proposed, where fixed phase difference is generated by two FP interferometers (FPIs) with different cavity length. An ellipse fitting differential cross multiplication (EF-DCM) interrogation process is applied for phase demodulation to overcome drawbacks of quadrature point based intensity demodulation, such as temperature drifting, optical power jitter and limited dynamic range. Besides, benefiting from the large area sandwich-structure composite diaphragm, high sensitivity and wide flat frequency response are obtained. Experimental results show that phase sensitivity is-121.11 dB re 1 rad/μPa@250 Hz and sensitivity fluctuation is below 0.8 dB between 2-250Hz. To prove the high stability of the demodulation system, acoustic signal test is performed at different wavelength and different optical power and a fluctuation below 3% is observed. Moreover, profiting from the dual FP sensor structure, the acoustic sensor is get rid of influence of temperature drifting which usually leads to variation of cavity length of fiber optic acoustic sensor. The proposed sensor structure also overcomes drawbacks of traditional dual wavelength demodulation such as extra noise introduced by erbium doped fiber amplifier (EDFA) and high cost.

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UV Adhesive Diaphragm-Based FPI Sensor for Very-Low-Frequency Acoustic Sensing

Cited by 41 publications

References 24 publications

A Large-Area and Nanoscale Graphene Oxide Diaphragm-Based Extrinsic Fiber-Optic Fabry–Perot Acoustic Sensor Applied for Partial Discharge Detection in Air

A Large-Area and Nanoscale Graphene Oxide Diaphragm-Based Extrinsic Fiber-Optic Fabry–Perot Acoustic Sensor Applied for Partial Discharge Detection in Air

A Comprehensive Study of Optical Fiber Acoustic Sensing

High Sensitivity and High Stability Dual Fabry-Perot Interferometric Fiber-Optic Acoustic Sensor Based on Sandwich-Structure Composite Diaphragm

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