Pulsed-Bremsstrahlung-Radiation Effect on Undoped- and Ge-Doped-Silica-Core Optical Fibers at Wavelength of 1.55 μm
| Autor: | Olga M. Tatsenko, Nikolay V. Zavialov, Marina K. Tsibinogina, Ekaterina T. Batova, A N Gur'yanov, Ekaterina A. Bychkova, Mikhail Yu. Salgansky, Alexander N. Moiseenko, Alexey V. Filippov, P. F. Kashaykin, Alexander L. Tomashuk, Irina S. Azanova, Evgeny M. Dianov, Anatoly V. Grunin, A. E. Levchenko |
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| Rok vydání: | 2017 |
| Předmět: |
Optical fiber
Materials science business.industry Analytical chemistry 02 engineering and technology Graded-index fiber Atomic and Molecular Physics and Optics law.invention 020210 optoelectronics & photonics Zero-dispersion wavelength law 0202 electrical engineering electronic engineering information engineering Optoelectronics Dispersion-shifted fiber Fiber Irradiation business Photonic crystal Photonic-crystal fiber |
| Zdroj: | Journal of Lightwave Technology. 35:2143-2149 |
| ISSN: | 1558-2213 0733-8724 |
| DOI: | 10.1109/jlt.2016.2623359 |
| Popis: | Radiation-induced attenuation (RIA) in fibers is investigated at $\lambda \,= \,{\text{1.55}}\,\mu\text{m}$ due to pulsed bremsstrahlung irradiation from an electron accelerator (mean photon energy of ∼5 MeV, pulse duration of ∼20 ns, doses of ∼3–76 Gy, time scale of ∼10–9 to 5 × 10–2 s). The fibers studied include three Ge-doped-silica-core fibers of different design and an undoped-silica-core fiber. The latter has been fabricated by an optimized technology to virtually fully suppress self-trapped holes and chlorine-associated RIA. RIA in Ge-doped fibers is found to increase with dose sublinearly with the power-law exponent in the range 0.69–0.96, although insufficient statistics (2–3 measurements for a fiber) do not allow us to state this with much confidence. The lowest RIA upon irradiation with high pulse doses (>20 Gy) is demonstrated by the undoped fiber; however, this RIA proved to be greater than that in a hollow-core photonic crystal fibers studied elsewhere. At smaller doses, RIA in the undoped fiber is estimated to amount just to a few dB/km at times $10^{- 3}- 10^{- 2}$ s. Therefore, optimized undoped fibers are argued to be the best-suited all-solid fiber type for practical applications under pulsed irradiation and combined pulsed and steady-state irradiations. |
| Databáze: | OpenAIRE |
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