Performance Enhancement of Vibration Sensing Employing Multiple Phase-Shifted Fiber Bragg Grating

Azmi, Asrul Izam; Sen, D.; Sheng, Wenjuan; Canning, John; Peng, Gang-Ding

doi:10.1109/jlt.2011.2169940

Cited by 33 publications

(18 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fact that the optical sensor can be mounted on the inside wall, is an inherent advantage allowing for better sensitivity and location processes. Another work on high sensitivity phase-shifted FBGs was developed by Azmi et al where a 20-dB sensitivity enhancement compared with standard FBG acoustic sensors was reported [47]. This would be later applied to failure monitoring of e-glass/vinylester composite structures [48].…”

Section: Fiber Laser Sensor Based On a Phase-shifted Chirped Grating mentioning

confidence: 99%

Advanced fiber-optic acoustic sensors

et al. 2014

View full text Add to dashboard Cite

Acoustic sensing is nowadays a very demanding field which plays an important role in modern society, with applications spanning from structural health monitoring to medical imaging. Fiber-optics can bring many advantages to this field, and fiber-optic acoustic sensors show already performance levels capable of competing with the standard sensors based on piezoelectric transducers. This review presents the recent advances in the field of fiber-optic dynamic strain sensing, particularly for acoustic detection. Three dominant technologies are identified -fiber Bragg gratings, interferometric Mach-Zehnder, and Fabry-Pérot configurations -and their recent developments are summarized.

show abstract

Section: Fiber Laser Sensor Based On a Phase-shifted Chirped Grating mentioning

confidence: 99%

Advanced fiber-optic acoustic sensors

et al. 2014

View full text Add to dashboard Cite

show abstract

“…In terms of optical sensing, phase-shifted FBGs have been used to measure parameters such as vibration [5], strain [6] and pressure [7], [8] with increased sensitivity in relation to conventional FBG systems.…”

Section: Introductionmentioning

confidence: 99%

Optical Inclinometer Based on a Phase-Shifted Bragg Grating in a Taper Configuration

Moura

Silva

Becker

et al. 2014

IEEE Photon. Technol. Lett.

View full text Add to dashboard Cite

A simple optical inclinometer based on a phaseshifted Bragg grating in a taper configuration is proposed. Two phase-shifted fiber Bragg gratings were fabricated using a DUV femtosecond laser technique in the taper region, with taper waist diameters of 30 μm and 50 μm. Both sensing heads were compared based on their response to angle and strain. Whereas the higher diameter sensor yielded a higher sensitivity to curvature (23.8 ± 0.3 pm/degree), the lower diameter one was more sensitive to strain (8.94 ± 0.04 pm/με).

show abstract

“…In recent years, interest in fiber optic acoustic sensors has increased owing to their many important applications, such as the fiber optic hydrophones [1], ultrasonic sensors for structural health monitoring or industrial process monitoring [2,3], and acoustic vibration detection in seismological observation and localization [4]. The fiber optic acoustic pressure sensor is one type of fiber optic acoustic sensor and most of these sensors are of the interferometric type, especially the Fabry-Perot arrangement [5][6][7], which achieves much higher sensitivities than conventional piezoelectric counterparts.…”

Section: Introductionmentioning

confidence: 99%

Passively mode-locked fiber laser sensor for acoustic pressure sensing

Wang

Lü

Liao

et al. 2013

Journal of Modern Optics

View full text Add to dashboard Cite

The development is reported of a multi-longitudinal mode fiber laser sensor based on passive mode locking employing carbon nanotubes in the laser cavity. A polymer membrane is employed beneath the pre-strained erbium-doped fiber (EDF) to convert the sound pressure disturbance into axial strain, alter the cavity length, and induce a shift of the longitudinal modes beat. Hence, acoustic pressure measurement can be carried out by detecting the shift of the beat frequency. Experimental results show comparable strain and sound pressure sensitivity of~0.5 kHz/με and 147.2 Hz/Pa, respectively. The proposed sensor is an alternative for the measurement of acoustic pressure and possesses the advantages of good stability and ease of interrogation.

show abstract

Performance Enhancement of Vibration Sensing Employing Multiple Phase-Shifted Fiber Bragg Grating

Cited by 33 publications

References 22 publications

Advanced fiber-optic acoustic sensors

Advanced fiber-optic acoustic sensors

Optical Inclinometer Based on a Phase-Shifted Bragg Grating in a Taper Configuration

Passively mode-locked fiber laser sensor for acoustic pressure sensing

Contact Info

Product

Resources

About