Search International and National Patent Collections

1. (WO2018204248) LOW BEND LOSS OPTICAL FIBER WITH A GERMANIA DOPED CORE

Pub. No.:    WO/2018/204248    International Application No.:    PCT/US2018/030170
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Tue May 01 01:59:59 CEST 2018
IPC: G02B 6/036
G02B 6/028
Applicants: CORNING INCORPORATED
Inventors: BOOKBINDER, Dana Craig
LI, Ming-Jun
MISHRA, Snigdharaj Kumar
TANDON, Pushkar
Title: LOW BEND LOSS OPTICAL FIBER WITH A GERMANIA DOPED CORE
Abstract:
A single mode optical fiber including a germania doped silica central core region having outer radius r1 and refractive index Δ1, a maximum refractive index Δ1, and 0.32 % ≤ Δ1max ≤ 0.45 %, and a core alpha profile (Coreα). In various embodiments, the optical fiber also contains a cladding region including: (i) a second inner cladding region or ring region surrounding the first inner cladding region; or (ii) an inner cladding region or pedestal region surrounding the germania doped silica central core region. The corresponding resultant optical fibers exhibit a 22 m cable cutoff less than or equal to 1260 nm, a macrobending loss at 1550 nm of ≤ 0.75 dB/turn on a 20 mm diameter mandrel, a zero dispersion wavelength, λ0, of 1300 nm ≤ λ0 ≤ 1324 nm, and a mode field diameter at 1310 nm of 8.2 microns ≤ MDF1310 ≤ 9.6 microns.