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Radiation-Resistant Er3+-Doped Superfluorescent Fiber Sources

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      Abstract

      The radiation effects of three Er3+-doped superfluorescent fiber sources (SFSs), which are based on three segments of Er-doped fibers with different lengths, are studied experimentally. We observed that the radiation-induced attenuation of the signal light of the 1530 nm band for an SFS is less than that of the 1560 nm band. Thus, the trimming technique of the Gauss-like spectra is investigated to reduce the mean wavelength drift. A filter was customized and used in superfluorescent fiber sources. To further reduce output power loss, the method with feedback control of pump power was adopted in the SFS. Then, the trimming spectral SFS with pump feedback control was tested under irradiation environment at the dose rate of 2.988 Gy/h. The experimental results demonstrate that the mean wavelength drift is <40 ppm and the loss of output power is <0.2 dB under a total dose higher than 1000 Gy. These findings confirm the significance of the method in improving radiation-resistant capabilities of fiber sources under irradiation environments.

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      Characteristics of erbium-doped superfluorescent fiber sources for interferometric sensor applications

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        Radiation-resistant erbium-doped-nanoparticles optical fiber for space applications.

        We demonstrate for the first time a radiation-resistant Erbium-Doped Fiber exhibiting performances that can fill the requirements of Erbium-Doped Fiber Amplifiers for space applications. This is based on an Aluminum co-doping atom reduction enabled by Nanoparticules Doping-Process. For this purpose, we developed several fibers containing very different erbium and aluminum concentrations, and tested them in the same optical amplifier configuration. This work allows to bring to the fore a highly radiation resistant Erbium-doped pure silica optical fiber exhibiting a low quenching level. This result is an important step as the EDFA is increasingly recognized as an enabling technology for the extensive use of photonic sub-systems in future satellites.
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          Radiation assessment of hydrogen-loaded aluminium-coated pure silica core fibres for ITER plasma diagnostic applications

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            Author and article information

            Affiliations
            [1 ]Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China; chxliu@ 123456szu.edu.cn
            [2 ]College of Sino-German Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, China; wuxu@ 123456sztu.edu.cn (X.W.); 2160190401@ 123456email.szu.edu.cn (N.H.); 2160190403@ 123456email.szu.edu.cn (Z.L.); scruan@ 123456szu.edu.cn (S.R.);
            [3 ]Shenzhen Key Laboratory of Laser Engineering, Guangdong Provincial Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; zhujianhui1@ 123456email.szu.edu.cn (J.Z.); 2161190230@ 123456email.szu.edu.cn (G.Z.)
            [4 ]College of Information Engineering, Shenzhen University, Shenzhen 518060, China; zhang_li@ 123456szu.edu.cn
            Author notes
            [* ]Correspondence: wuxu@ 123456sztu.edu.cn
            Journal
            Sensors (Basel)
            Sensors (Basel)
            sensors
            Sensors (Basel, Switzerland)
            MDPI
            1424-8220
            11 July 2018
            July 2018
            : 18
            : 7
            29997366
            6069274
            10.3390/s18072236
            sensors-18-02236
            © 2018 by the authors.

            Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

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