论文信息 - Simultaneous measurement of radiation dose and strain based on an erbium-doped fiber ring laser incorporating a fiber Bragg grating

Simultaneous measurement of radiation dose and strain based on an erbium-doped fiber ring laser incorporating a fiber Bragg grating

We propose a sensing scheme of an erbium-doped fiber (EDF) ring laser for multi-monitoring of radiation dose and strain simultaneously. The EDF and fiber Bragg grating (FBG) are exploited as sensing probes for simultaneous measurement of radiation dose and strain. The output power and the lasing wavelength of the proposed EDF laser are changed by increasing the radiation dose and strain, respectively. The radiation and strain sensitivities were measured to be 8.4 dB/km∙Gy and 0.81 pm/με, respectively.

[1] Michael J. Hayduk,et al. Gamma-ray induced pulsewidth broadening and power loss in modelocked Er-doped fibre laser , 2001 .

[2] G. C. Valley,et al. Gamma and proton radiation effects in erbium-doped fiber amplifiers: active and passive measurements , 2001 .

[3] Elfed Lewis,et al. Real-time gamma dosimetry using PMMA optical fibres for applications in the sterilization industry , 2007 .

[4] Alan L. Huston,et al. Remote optical fiber dosimetry , 2001 .

[5] Min Zhang,et al. Sensitivity enhancement in erbium-doped fiber laser intra-cavity absorption sensor , 2003 .

[6] A.Ben Dhia,et al. 3D finite element analyses of a new fracture toughness testing method for tubular structures , 1997 .

[7] J.-G. Liu,et al. Dynamic strain measurement with a fibre Bragg grating sensor system , 2002 .

[8] Elfed Lewis,et al. A review of optical fibre radiation dosimeters , 2008 .

[9] Kelly Simmons-Potter,et al. Gamma-Radiation-Induced Photodarkening in Unpumped Optical Fibers Doped With Rare-Earth Constituents , 2010, IEEE Transactions on Nuclear Science.

[10] Paul Borgermans,et al. True dose rate enhancement effect in phosphorous-doped fibre optic radiation sensors , 2004, European Workshop on Optical Fibre Sensors.

[11] Alain Delchambre,et al. Temperature monitoring of nuclear reactor cores with multiplexed fiber Bragg grating sensors , 2002 .