Unusual Attenuation Recovery Process After Fiber Optic Cable Irradiation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F17%3A00315733" target="_blank" >RIV/68407700:21230/17:00315733 - isvavai.cz</a>

Výsledek na webu

<a href="http://iopscience.iop.org/article/10.1088/1757-899X/266/1/012005" target="_blank" >http://iopscience.iop.org/article/10.1088/1757-899X/266/1/012005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/266/1/012005" target="_blank" >10.1088/1757-899X/266/1/012005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unusual Attenuation Recovery Process After Fiber Optic Cable Irradiation

Popis výsledku v původním jazyce

At present, the number of optical cables in nuclear power plants has been increasing. Fiber optic cables are commonly used at nuclear power plants in instrumentation and control systems but they are usually used in environments without radiation. Nevertheless, currently, the number of applications in NPP containment with radiation is increasing. One of the most prevalent effects of radiation exposure is an increase of signal attenuation (signal loss). This is the result of fiber darkening due to radiation exposure and it is the main limitation factor in application of fiber optics in radiation environment. However, after the irradiation, the fiber optics go through a "recovery process" during which the optical properties improve again; i.e. attenuation decreases. However, we have found cable, where the expected healing process after few days changed its trend and the attenuation increased again to a value well above the attenuation just after the irradiation. This paper describes experiments that were carried out to explain this unusual recovery behaviour.

Název v anglickém jazyce

Unusual Attenuation Recovery Process After Fiber Optic Cable Irradiation

Popis výsledku anglicky

At present, the number of optical cables in nuclear power plants has been increasing. Fiber optic cables are commonly used at nuclear power plants in instrumentation and control systems but they are usually used in environments without radiation. Nevertheless, currently, the number of applications in NPP containment with radiation is increasing. One of the most prevalent effects of radiation exposure is an increase of signal attenuation (signal loss). This is the result of fiber darkening due to radiation exposure and it is the main limitation factor in application of fiber optics in radiation environment. However, after the irradiation, the fiber optics go through a "recovery process" during which the optical properties improve again; i.e. attenuation decreases. However, we have found cable, where the expected healing process after few days changed its trend and the attenuation increased again to a value well above the attenuation just after the irradiation. This paper describes experiments that were carried out to explain this unusual recovery behaviour.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

IOP Conference Series-Materials Science and Engineering

ISBN

—

ISSN

1757-8981

e-ISSN

1757-8981

Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

IOP Publishing Ltd

Místo vydání

Bristol

Místo konání akce

Kežmarské Žľaby

Datum konání akce

4. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000419228900005