Development of an erbium-doped fibre laser as a deep-sea hydrophone

Bagnoli, Paolo; Beverini, N.; Falciai, R.; Maccioni, Enrico; Morganti, M.; Sorrentino, F.; Stefani, Fabio; Trono, C.

doi:10.1088/1464-4258/8/7/s36

Cited by 27 publications

(16 citation statements)

References 9 publications

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“…Various fiber optic hydrophones based on intensity modulation were also demonstrated, including those utilize the principle of microbending [4], the lateral misalignment between two fiber ends [5], the frustrated total internal reflection [6], and the change of coupling ratio of fiber coupler in response to acoustic signals [7]. Recently, fiber optic hydrophones based on fiber Bragg grating [8][9][10] or fiber grating laser [11][12][13] have attracted attention. Their working principle is based on the change of operation wavelength of fiber Bragg gratings or fiber grating lasers in response to acoustic pressure.…”

Section: Introductionmentioning

confidence: 99%

Dual polarization fiber grating laser hydrophone

Guan¹,

Tan²,

Tam³

2009

Opt. Express

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A novel fiber optic hydrophone based on the integration of a dual polarization fiber grating laser and an elastic diaphragm is proposed and experimentally demonstrated. The diaphragm transforms the acoustic pressure into transversal force acting on the laser cavity which changes the fiber birefringence and therefore the beat frequency between the two polarization lines. The proposed hydrophone has advantages of ease of interrogation, absolute frequency encoding, and capability to multiplex a number of sensors on a single fiber by use of frequency division multiplexing technique. 113-117 (1980). 7. R. Chen, G. F. Fernando, T. Butler, and R. A. Badcock, "A novel ultrasound fiber optic sensor based on a fusedtapered optical fiber coupler," Meas. Sci. Technol. 15(8), 1490-1495). 8. N. Takahashi, S., Takahashi, and K. Tetsumura, "Fiber-Bragg-grating underwater acoustic sensor," in Proc. 13th Int. Conf. Optical Fiber Sensors, Kyongju, Korea, 565-568 (1999. 9. N. Takahashi, K. Yoshimura, S. Takahashi, and K. Imamura, ""Characteristics of fiber Bragg grating hydrophone," IEICE Trans. Electron," E 83-C, 275-281 (2000). 10. J. H. Cole, C. Sunderman, A. B. Tveten, C. Kirkendall, and A. Dandridge, "Preliminary investigation of airincluded polymer coatings for enhanced sensitivity of fiber-optic acoustic sensors," In Proc. 15th Int. Conf. ©2009 Optical Society of America

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Section: Introductionmentioning

confidence: 99%

Dual polarization fiber grating laser hydrophone

Guan¹,

Tan²,

Tam³

2009

Opt. Express

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“…Subsequently, there was a number of reports about fiber laser hydrophones, with configurations mostly based on polymer coating on bare fiber laser [4,[35][36], or shielded polymer coating on fiber laser [37].…”

Section: Fl Hydrophone and Towed Arraymentioning

confidence: 99%

Fiber laser sensing system and its applications

Liu

Zhang

et al. 2010

Photonic Sens

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An overview of fiber laser sensing is presented. The design and the characteristics of distributed feedback (DFB) fiber lasers for high performance sensing applications are described. Demodulation techniques based on unbalanced fiber interferometer are discussed, especially for the noise level, the dynamic range, and the crosstalk in dense-wavelength-division multiplexing. Finally, the fiber laser sensing system configurations and field demonstrations for different applications are illustrated.

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“…Any variation of the FBG pitch, of the cavity length, or of the fiber effective refractive index, induced by strain, temperature or pressure, produces a variation of the FL emission wavelength. An interferometric detection technique can improve the sensitivity well below the line width of a singlemode FL (E4 Â 10 À8 nm) [12]. According to Ref.…”

Section: Fiber Laser (Fl) Acoustic Sensorsmentioning

confidence: 99%