US 12,353,002 B2
Optical fiber with improved microbending performance
Apeksha Malviya, Gurugram (IN); Ranjith Balakrishnan, Gurugram (IN); Srinivas Reddy Munige, Gurugram (IN); and Anand Pandey, Gurugram (IN)
Filed by Sterlite Technologies Limited, Gurugram (IN)
Filed on Jun. 24, 2023, as Appl. No. 18/340,848.
Claims priority of application No. 202211074534 (IN), filed on Dec. 22, 2022.
Prior Publication US 2024/0210616 A1, Jun. 27, 2024
Int. Cl. G02B 6/02 (2006.01); C03C 25/1065 (2018.01)
CPC G02B 6/02395 (2013.01) [G02B 6/02009 (2013.01); C03C 25/1065 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical fiber (100, 120, 142) comprising:
a silica region (102, 122, 144), wherein the silica region comprising a core (108, 128, 150) defined by a core radius in a range of 3.5 μm to 4.8 μm, wherein the silica region (102, 122, 144) has a diameter in a range of 65 μm to 100 μm;
a first coating (104, 124, 146) adapted to cover an outer circumference of the silica region (102, 122, 144), wherein the first coating (104, 124, 146) has (i) a thickness of the first coating is in a range of 25 μm to 45 μm and (ii) a first Young's modulus; and
a second coating (106, 126, 148) adapted to cover an outer surface of the first coating (104, 124, 146), wherein the second coating (106, 126, 148) has (i) a second diameter is less than or equal to 180 μm and (ii) a second Young's modulus;
wherein the first coating (104, 124, 146) and the second coating (106, 126, 148) are adapted to cause a coating induced micro bend loss that is less than 2.2×103 N−1 mm−8.5, wherein the optical fiber (100, 120, 142) has leakage losses of less than 0.001 Decibels/Kilometers (dB/km) at a wavelength of 1550 nm.