公开(公告)号：US20170371122A1

公开(公告)日：2017-12-28

申请号：US15630099

申请日：2017-06-22

Applicant: Corning Incorporated

Inventor： Inna Igorevna Kouzmina ,  Clifton Carl Roberts ,  Ruchi Tandon

IPC: G02B6/44

CPC classification number: G02B6/4482 ,  C09D11/037 ,  C09D11/101 ,  G02B6/4403 ,  G02B6/441 ,  G02B6/4411 ,  G02B6/447

Abstract: An optical fiber having an ink layer that includes an optical brightener is described. The optical brightener is a marker that permits identification of the fiber. The ink layer may also include a pigment, where either or both of the pigment and optical brightener may function as a marker for identifying the fiber. Bundles of two or more optical fibers, each of which includes an ink layer containing an optical brightener, are also described.

公开(公告)号：US11187853B2

公开(公告)日：2021-11-30

申请号：US16391824

申请日：2019-04-23

Applicant: Corning Incorporated

Inventor： Kevin Wallace Bennett ,  Scott Robertson Bickham ,  Pushkar Tandon ,  Ruchi Tandon

IPC: G02B6/036 ,  G02B6/02 ,  G02B6/028

Abstract: An optical fiber comprising: (a) a core having an outer radius r1; (b) a cladding having an outer radius r4 8 microns, in situ modulus EP≤0.35 MPa and a spring constant χP 8 microns, r6≤56 microns. The fiber has a mode field diameter MFD greater than 8.2 microns at 1310 nm; a fiber cutoff wavelength of less than 1310 nm; and a bend loss at a wavelength of 1550 nm, when wrapped around a mandrel having a diameter of 10 mm, of less than 1.0 dB/turn.

公开(公告)号：US11119270B2

公开(公告)日：2021-09-14

申请号：US16793063

申请日：2020-02-18

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Yangbin Chen ,  Ching-Kee Chien ,  Ming-Jun Li ,  Pushkar Tandon ,  Ruchi Tandon

IPC: G02B6/028 ,  G02B6/02

Abstract: The present description provides reduced-diameter multimode optical fibers. The optical fibers include a reduced-diameter glass fiber and/or reduced-thickness coatings. The overall diameter of the optical fibers is less than 210 μm and examples with diameters less than 160 μm are presented. Puncture resistant secondary coatings enable thinning of the secondary coating without compromising protection of the glass fiber. The optical fibers are suitable for data center applications and features high modal bandwidth, low attenuation, low microbending sensitivity, and puncture resistance in a compact form factor.

公开(公告)号：US11036000B2

公开(公告)日：2021-06-15

申请号：US16716912

申请日：2019-12-17

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Ming-Jun Li ,  Pushkar Tandon ,  Ruchi Tandon

IPC: G02B6/02 ,  G02B6/036 ,  C03C25/1065 ,  C03C25/50 ,  G02B6/028

Abstract: The present disclosure provides optical fibers with an impact-resistant coating system. The fibers feature low attenuation. The coating system includes a primary coating and a secondary coating. The primary coating and secondary coating have reduced thickness to provide low-diameter fibers without sacrificing protection. The primary coating has high tear strength and is resistant to damage caused by mechanical force. The secondary coating has high puncture resistance. The outer diameter of the optical fiber is less than or equal to 190 μm.

公开(公告)号：US20210032160A1

公开(公告)日：2021-02-04

申请号：US16930723

申请日：2020-07-16

Applicant: CORNING INCORPORATED

Inventor： Dana Craig Bookbinder ,  Pushkar Tandon ,  Ruchi Tandon

IPC: C03C25/20 ,  C03C13/04 ,  C03B37/027 ,  C03B37/03 ,  C03C25/1065 ,  C03C25/285

Abstract: An optical fiber draw system and method of coating an optical fiber. The system includes a furnace for heating an optical fiber preform, a draw assembly for drawing the optical fiber at a draw speed greater than 50 meters per second, a first coating applicator for applying a first coating onto the fiber, and a first curing assembly comprising a first plurality of light sources comprising light-emitting diodes for partially curing the first coating. The optical fiber draw system also includes a second coating applicator for applying a second coating onto the fiber on top of the first coating, and a second curing system comprising a second plurality of light sources for curing the second coating, wherein the first coating is further cured in the range of 15-50 percent after leaving the first curing assembly.

公开(公告)号：US20200064546A1

公开(公告)日：2020-02-27

申请号：US16673370

申请日：2019-11-04

Applicant: CORNING INCORPORATED

Inventor： Ching-Kee Chien ,  Pushkar Tandon ,  Ruchi Tandon

IPC: G02B6/02 ,  C03C13/04 ,  C09D175/08 ,  C09D4/06 ,  C03B37/027 ,  C03C25/1065 ,  C03C25/326

Abstract: An optical fiber includes an outer diameter less than 220 μm, a glass fiber that includes a glass core and a glass cladding, a primary coating, and a secondary coating. The glass cladding surrounds and is in direct contact with the glass core. The primary coating surrounds and is in direct contact with the glass fiber. The primary coating can have a Young's modulus less than 0.5 MPa and a thickness less than 30.0 μm. The secondary coating surrounds and is in direct contact with the primary coating. The secondary coating can have a thickness less than 27.5 m. A pullout force of the optical fiber can be less than a predetermined threshold when in an as-drawn state. The pullout force may increase by less than a factor of 2.0 upon aging the primary and secondary coatings on the glass fiber for at least 60 days.

公开(公告)号：US20190338161A1

公开(公告)日：2019-11-07

申请号：US16400641

申请日：2019-05-01

Applicant: Corning Incorporated

Inventor： John William Botelho ,  Ching-Kee Chien ,  Jill Ann Cummings ,  Pushkar Tandon ,  Ruchi Tandon

IPC: C09D175/14 ,  C08G18/12 ,  C08G18/75 ,  C08G18/48 ,  C08G18/67 ,  C03C13/04 ,  C03C25/106 ,  C03C25/326 ,  C03C25/40 ,  C03C25/25 ,  G02B6/02

Abstract: Fiber coatings with low Young's modulus, low fiber pullout force for fibers in the as-drawn state, and small time-dependent increases in pullout force as the fiber ages. The fiber coatings are cured products of coating compositions that include an oligomer formed from an isocyanate, a hydroxy acrylate compound and a polyol. The oligomer includes a polyether urethane acrylate and a di-adduct compound. The reaction mixture used to form the oligomer includes a molar ratio of isocyanate:hydroxy acrylate:polyol of n:m:p, where when p is 2, n is in the range from 3.0 to 5.0 and m is in the range from 1.50n-3 to 2.50n-5. Control of the n:m:p ratio leads to compositions that, when cured, provide coatings and cured products having low Young's modulus, low pullout force on glass, and weak variations with time as the fiber ages.

公开(公告)号：US10377915B2

公开(公告)日：2019-08-13

申请号：US16042051

申请日：2018-07-23

Applicant: CORNING INCORPORATED

Inventor： John William Botelho ,  Ruchi Tandon

IPC: C08F2/08 ,  C08F2/46 ,  C08G61/04 ,  C09D133/14 ,  C09D4/00 ,  C09D133/10 ,  C09D133/12 ,  C08F220/28

Abstract: A treated monomer for optical fiber coatings, a coating composition containing the treated monomer, a coating formed from a coating composition containing a treated monomer, and a fiber coated with the coating formed from a coating composition containing a treated monomer. The monomer is an alkoxylated alkyl acrylate and is formed by acrylating a polyol precursor. The monomer may include residual unreacted polyol precursor. The monomer is treated with a derivatizing agent to convert residual unreacted polyol to a derivative form. The derivative form is less susceptible to degradation to the corresponding non-alkoxylated alcohol or other lower alkoxylated alcohol. The treated monomer includes the alkoxylated alkyl acrylate and the derivative form of the polyol.

公开(公告)号：US20190177216A1

公开(公告)日：2019-06-13

申请号：US16184069

申请日：2018-11-08

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Robert Clark Moore ,  Darren Andrew Stainer ,  Pushkar Tandon ,  Ruchi Tandon ,  Michael James Todt

IPC: C03C25/1065 ,  G02B6/02 ,  C03B37/025 ,  C03C25/285

Abstract: An optical fiber and its manufacture are provided. The optical fiber includes an optical waveguide and a cured primary coating layer surrounding the optical waveguide. The optical fiber further includes a cured secondary coating layer surrounding the cured primary coating layer. The optical fiber further includes a cured tertiary ink coating layer surrounding the cured secondary coating layer. The cured tertiary ink coating layer has a glass transition temperature (Tg-ink) of greater than or equal to 75° C.

公开(公告)号：US20180327625A1

公开(公告)日：2018-11-15

申请号：US16042051

申请日：2018-07-23

Applicant: CORNING INCORPORATED

Inventor： John William Botelho ,  Ruchi Tandon

IPC: C09D133/14 ,  C09D133/12 ,  C09D133/10 ,  C09D4/00 ,  C08F220/28

CPC classification number: C09D133/14 ,  C08F2220/286 ,  C09D4/00 ,  C09D133/10 ,  C09D133/12

Abstract: A treated monomer for optical fiber coatings, a coating composition containing the treated monomer, a coating formed from a coating composition containing a treated monomer, and a fiber coated with the coating formed from a coating composition containing a treated monomer. The monomer is an alkoxylated alkyl acrylate and is formed by acrylating a polyol precursor. The monomer may include residual unreacted polyol precursor. The monomer is treated with a derivatizing agent to convert residual unreacted polyol to a derivative form. The derivative form is less susceptible to degradation to the corresponding non-alkoxylated alcohol or other lower alkoxylated alcohol. The treated monomer includes the alkoxylated alkyl acrylate and the derivative form of the polyol.