OPTICAL FIBER, AND PREPARATION METHOD FOR OPTICAL FIBER

An optical fiber with reduced signal losses when flexed includes a core layer, a cladding layer wrapping the core layer, and a coating layer. The cladding layer includes an inner cladding layer, a first depressed layer, a second depressed layer, and an outer cladding layer that are sequentially wrap...

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Bibliographic Details
Main Authors YOU, Guanglei, XUE, Chi, ZHU, Qiansheng, CAO, Shanshan, LIU, Zhizhong, SU, Haiyan, XUE, Jiping, XU, Haitao
Format Patent
LanguageEnglish
French
German
Published 06.04.2022
Subjects
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS
CHEMISTRY
GLASS
JOINING GLASS TO GLASS OR OTHER MATERIALS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS
SURFACE TREATMENT OF GLASS
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Summary:An optical fiber with reduced signal losses when flexed includes a core layer, a cladding layer wrapping the core layer, and a coating layer. The cladding layer includes an inner cladding layer, a first depressed layer, a second depressed layer, and an outer cladding layer that are sequentially wrapped inside to outside. A single side width of the first depressed layer is greater than a single side width of the second depressed layer, a relative refractive index of the first depressed layer is from -0.03% to -0.06%, and a relative refractive index of the second depressed layer is from -0.08% to -0.15%. First and second coating layers are applied on the outer cladding layer, a diameter of the second coating layer is 175µm~195µm. A method for preparing such optical fiber is also disclosed.
Bibliography:Application Number: EP20200923680