Behavior of strain-assisted self-trapped holes in pure-silica optical fibers upon pulsed-X-ray irradiation

Томашук, А.Л.; Filippov, A. V.; Kashaykin, P. F.; Salgansky, M. Yu.; Vasiliev, S.A.; Zverev, O. V.; Guryanov, A. N.; Semjonov, Sergey L.

doi:10.1016/j.jnoncrysol.2021.120880

Cited by 12 publications

(4 citation statements)

References 26 publications

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“…3). Разложение спектров РНП на гауссовы компоненты, для которого использовались известные из литературы полосы поглощения АДС [4,18], указывает на полосу АДС с центром на 1.2 eV (∼ 1 µm) [18] как на источник больших РНП на длине волны λ = 1310 nm в Super RadHard, чем в GIMMSC(50/125) (рис. 3).…”

Section: отметим что рнп Rrf фирмы "unclassified

“…В МВС из фторсиликатного стекла РНП в ближнем ИК-диапазоне, на длине волны λ вблизи 850, 1300 и 1550 nm, определяются поглощением радиационно-индуцированными автолокализованными дырочными состояниями (АДС) в сетке кварцевого стекла [17]. Отличительная особенность АДС в том, что их концентрация экстремально сильно возрастает с увеличением мощности дозы [18] и интенсивности зондирующего света [17].…”

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Радиационно-Стойкие Градиентные Многомодовые Волоконные Световоды На Основе Фторсиликатного Стекла

Поспелова¹,

Кашайкин²,

Мальцев³

et al. 2023

Письма В Журнал Технической Физики

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Using MCVD-technology, radiation-resistant multimode optical fibers based on fluorosilicate glass with a gradient refractive index profile were developed. Radiation-induced attenuation of light (RIA) in the fibers was compared with the literature data on analoguous fibers manufactured by the PCVD-technoogy. It was found out that RIA in the MCVD-fibers at the wavelength λ=1310 nm under γ-irradiation at doses of up to 10 kGy is 1-2 dB/km (19%-29%) lower than RIA in Super RadHard fiber produced by the PCVD-technology and previously supposed to have record-high radiation resistance.

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Section: отметим что рнп Rrf фирмы "unclassified

unclassified

Радиационно-Стойкие Градиентные Многомодовые Волоконные Световоды На Основе Фторсиликатного Стекла

Поспелова¹,

Кашайкин²,

Мальцев³

et al. 2023

Письма В Журнал Технической Физики

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“…In the fluorosilicate-glass MOFs, RIAs in the near-IR range at wavelengths λ close to 850, 1300 and 1550 nm are defined by absorption in radiation-induced self-trapped hole states (STH) in the quartz glass network [17]. The STH distinguishing feature is that their concentration increases extremely strongly with increasing dose rate [18] and probing light intensity [17].…”

Section: Also Shows Rias In Mofs Produced By "mentioning

confidence: 99%

“…3). The RIA spectra decomposition into Gaussian components, for which STH absorption bands known from literature were used [4,18], points to the STH band with the center at 1.2 eV (∼ 1 µm) [18] as to the source of exceedance of RIAs at wavelength λ = 1310 nm in Super RadHard over those in GIMMSC(50/125) (Fig. 3).…”

Section: Dose Gymentioning

confidence: 99%

Radiation-resistant graded-index multimode optical fibers based on fluorosilicate glass

Pospelova E. A.,

Kashaykin P. F.,

Maltsev I. A.

et al. 2023

Technical Physics Letters

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Using the MCVD-technology, radiation-resistant multimode optical fibers based on fluorosilicate glass with a gradient refractive index profile were developed. Radiation-induced attenuation (RIA) of light in the fibers was compared with the literature data on analogous fibers manufactured by the PCVD-technology. It was found out that RIA in the MCVD-fibers at the wavelength λ=1310 nm under γ-irradiation at the doses of up to 10 kGy is 1-2 dB/km (19-29%) lower than RIA in the Super RadHard fiber produced by the PCVD-technology and previously supposed to have a record-high radiation resistance. Keywords: radiation-induced attenuation of light, RIA, graded-index multimode optical fiber, radiation resistance.

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Photobleaching Effect on the Radiation‐Induced Attenuation of an Ultralow Loss Optical Fiber at Telecommunication Wavelengths

Campanella

Morana

Michele

et al. 2021

Physica Status Solidi (a)

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Among the various advantages of optical fibers (OFs), low attenuation remains one of the most significant features, especially in the second and third telecom windows (around 0.5 and 0.2 dB km À1 ) at 1.31 and 1.55 μm wavelengths. [1] Ongoing studies are underway to limit as much as possible optical losses to overcome the limitations encountered in the design of telecommunication systems, to transfer information over longer distances (trans-oceanic transmission) without repeaters and/or signal regeneration. To date, the aforementioned attenuation limit, typically referring to commercial germanosilicate OFs (as the Corning SMF-28 and its latest enhanced versions) has been passed by a new generation of ultralow loss (ULL) OFs, whose core is composed essentially of pure silica (PSC-pure-silica core) with a low fluorine codoping. [2] With an appropriate and optimized manufacturing process, this new class of waveguides allows reducing the disorder in the microscopic glass structure and, as a result, the Rayleigh scattering losses that mostly explained the attenuation at Telecom windows. Losses as low as 0.14 dB km À1 at 1550 nm are today achieved. [2] When OFs are integrated in harsh environments associated with radiation constraints (e.g., space applications, fusiondevoted facilities, nuclear waste repositories), new sources of optical losses are added to the fiber intrinsic attenuation. In fact, radiations degrade the signal propagation inside the OF by generating radiation-induced point defects in the silica glass matrix. [3] These defects are associated with different absorption bands peaking in the ultraviolet, visible and infrared domains, reducing the silica transparency. This phenomenon, called radiation-induced attenuation (RIA), then logically depends on the OF intrinsic characteristics (chemical composition, geometry, and manufacturing process), on the environmental constraints (nature of particles, dose, dose rate, and temperature) as well as on the fiber profile of use (probing wavelength, signal power, and temperature). Indeed, all these parameters influence the defect generation efficiency or recovery processes through thermal or photo-assisted processes.From literature, it is known that PSC and F-doped OFs are, in terms of RIA, among the most radiation-resistant waveguides. [3,4] However, a new commercial ULL-PSC OF, the Corning Vascade EX1000, was recently found to be characterized by very high radiation-induced losses (up to a few dB m À1 after kGy dose levels) located in the infrared range of the spectrum. These losses were attributed to the presence of two overlapping absorption bands peaked around 1030 nm (%1.2 eV) and 1330 nm (%0.9 eV),

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Behavior of strain-assisted self-trapped holes in pure-silica optical fibers upon pulsed-X-ray irradiation

Cited by 12 publications

References 26 publications

Радиационно-Стойкие Градиентные Многомодовые Волоконные Световоды На Основе Фторсиликатного Стекла

Радиационно-Стойкие Градиентные Многомодовые Волоконные Световоды На Основе Фторсиликатного Стекла

Radiation-resistant graded-index multimode optical fibers based on fluorosilicate glass

Photobleaching Effect on the Radiation‐Induced Attenuation of an Ultralow Loss Optical Fiber at Telecommunication Wavelengths

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