Optische Faser

EP2618189 Art B1 2. August 2017

Anmelder: Sumitomo Electric Industries, Ltd. 🇯🇵

Details

Veröffentlichungs-Nr.: EP2618189
Aktenzeichen: EP13151828
Anmeldetag: 18. Januar 2013
Veröffentlichung: 2. August 2017
Erteilung: 2. August 2017
Rechtsraum: EP
IPC: G02B6/02G02B6/036

Abstract

An optical fiber containing an alkali metal element and exhibiting low attenuation as well as excellent radiation resistance is provided. The optical fiber of the present invention has a core region and a cladding region enclosing the core region. The core region contains alkali metal elements by an average concentration of 0.2 atomic ppm or more. The attenuation at a wavelength of 1550 nm after irradiating with the radiation of 0.10 Gy or more of cumulative absorbed dose increases by 0.02 dB/km or less as compared with the attenuation exhibited prior to radiation exposure.

Anmelder

Firma: Sumitomo Electric Industries, Ltd.
Land: 🇯🇵 Japan

🇯🇵 Sumitomo Electric Industries

Japanischer Technologiekonzern mit Sitz in Osaka, Teil der Sumitomo-Gruppe. Aktiv in Kabel- und Glasfasertechnologie, Halbleitern, Automobilkomponenten sowie Elektronik- und Werkstofftechnik.

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