Optische Faser mit Stark Daunendotiertem Bereich

Details

Veröffentlichungs-Nr.

EP4814549

Anmeldetag

18. Dezember 2025

Veröffentlichung

30. September 2026

Rechtsraum

EP

IPC

G02B6/02, G02B6/028

Abstract

The present disclosure relates to an optical fiber (100) for reduced loss, achieved through a deep trench structure formed and is bend-insensitive consists of a core region (102) with a relative refractive index (RI) ranging from 0.15% to 0.45%, surrounded by a cladding region (108) containing at least one low RI region (104) defined by a trench RI profile having a gradual decrease in RI. In particular, the minimum trench relative RI (Δt_min) ranges from -0.36% to -0.7%, and the thickness (T) of the low RI region (104)is between10 µm to 16 µm. Further, the low RI region (104) is formed by doping fluorine into the porous core soot preform in the presence of fluorine-containing gases and carrier gases, ensuring efficient fabrication of optical fibers (100) with enhanced bend performance, low attenuation, and minimal micro bend losses, suitable for highperformance telecommunications.

Anmelder

Firma

Sterlite Technologies Limited

Land

🇮🇳 Indien

Fachgebiete