US 11,796,749 B2
Rollable optical fiber ribbon with low attenuation, large mode field diameter optical fiber and cable
Dana Craig Bookbinder, Corning, NY (US); Ming-Jun Li, Horseheads, NY (US); and Pushkar Tandon, Painted Post, NY (US)
Assigned to CORNING RESEARCH & DEVELOPMENT CORPORATION, Corning, NY (US)
Filed by CORNING RESEARCH & DEVELOPMENT CORPORATION, Corning, NY (US)
Filed on Oct. 21, 2022, as Appl. No. 17/970,747.
Application 17/970,747 is a continuation of application No. 17/742,682, filed on May 12, 2022, granted, now 11,493,715.
Application 17/742,682 is a continuation of application No. 17/172,579, filed on Feb. 10, 2021, granted, now 11,360,280, issued on Jun. 14, 2022.
Application 17/172,579 is a continuation of application No. 16/853,892, filed on Apr. 21, 2020, granted, now 10,948,674, issued on Mar. 16, 2021.
Application 16/853,892 is a continuation of application No. 16/055,773, filed on Aug. 6, 2018, granted, now 10,649,163, issued on May 12, 2020.
Claims priority of provisional application 62/542,480, filed on Aug. 8, 2017.
Prior Publication US 2023/0049693 A1, Feb. 16, 2023
Int. Cl. G02B 6/44 (2006.01)
CPC G02B 6/4404 (2013.01) [G02B 6/448 (2013.01); G02B 6/4432 (2013.01); G02B 6/4478 (2013.01); G02B 6/4434 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical fiber cable comprising:
a plurality of rollable optical fiber ribbons, each optical fiber ribbon comprising:
a plurality of optical fibers, wherein each optical fiber comprises:
a core;
a cladding surrounding the core;
at least one coating surrounding the cladding such that the cladding is disposed between the core and the at least one coating;
an outer diameter ≤210 microns as measured at an outer surface of the at least one coating;
a mode field diameter of ≥9 microns at 1310 nm; and
a macrobend loss of ≤0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm; and
a cable jacket surrounding the plurality of optical fiber ribbons defining an exterior surface of the cable and a cable core,
wherein a core fiber density is greater than 7.12 fibers per square millimeter as calculated by the total number of optical fibers divided by an area of the cable core as determined from a minimum cable core diameter.