Impact of Relative Intensity Noise on Fiber Optic Hydrophone’s Phase Generated Carrier Scheme

Xun, 梁迅 Liang; Shuidong, 熊水东 Xiong; Yongming, 胡永明 Hu; Qiong, 姚琼 Yao; Lina, 马丽娜 Ma

doi:10.3788/cjl20083505.0716

中国激光

2008

DOI: 10.3788/cjl20083505.0716

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Impact of Relative Intensity Noise on Fiber Optic Hydrophone’s Phase Generated Carrier Scheme

梁迅 Liang Xun¹,

熊水东 Xiong Shuidong²,

胡永明 Hu Yongming³

et al.

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“…Distributed fiber interferometers of Sagnac and Mach-Zehnder configurations have been researched deeply because they are sensitive to tiny vibrations caused by any action of trespassing or breakage [4−7] . Many methods have been adopted to improve its performance, but complex signal processing is needed [8,9] . Omori et al proposed a simple distributed vibration sensing system based on fiber Sagnac interferometer [10] .…”

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confidence: 99%

Localization theory of distributed fiber vibration sensor

2009

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Based on Sagnac interferometer, a simple distributed optical fiber sensing system with sub-loop is presented to monitor the vibration applied on the sensing fiber. By introducing a sub-loop, three output beams of interference with different delay time are gotten. Location of the vibration is analyzed through mathematical-physical equations. The vibration frequency, amplitude, and location are theoretically simulated. The results agree well with the previous experiments.

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Localization theory of distributed fiber vibration sensor

2009

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Relaxation oscillation in Er^3+-doped and Yb^3+/Er^3+co-doped fiber grating lasers

Liang

et al. 2010

Appl. Opt.

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Relaxation oscillations in Er(3+)-doped and Yb(3+)/Er(3+) co-doped fiber grating lasers were investigated. Intensity noise models were established for both cases in which the fluctuations of pump power and cavity loss were analyzed. Simulation indicates that the relaxation oscillation is induced by the pump power fluctuation, and fluctuation of the cavity loss can broaden the relaxation oscillation peak and enhance the amplitude. The relaxation oscillation of a laser with Er(3+)-doped fiber exhibits a lower frequency and larger amplitude than that of an Yb(3+)/Er(3+) co-doped fiber grating laser. Distributed Bragg reflector fiber grating lasers with Er(3+)-doped fiber and Yb(3+)/Er(3+) co-doped fiber were fabricated, and the relaxation oscillations were measured. For the former, the relaxation oscillation frequency is at the magnitude of several hundreds of kilohertz and linearly shifts toward the higher frequency with the pump power. For the latter, no obvious relaxation oscillation was measured.

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Impact of Relative Intensity Noise on Fiber Optic Hydrophone’s Phase Generated Carrier Scheme

Cited by 2 publications

References 0 publications

Localization theory of distributed fiber vibration sensor

Localization theory of distributed fiber vibration sensor

Relaxation oscillation in Er^3+-doped and Yb^3+/Er^3+co-doped fiber grating lasers

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