公开(公告)号：US11874494B2

公开(公告)日：2024-01-16

申请号：US17184909

申请日：2021-02-25

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Sergejs Makovejs ,  Pushkar Tandon ,  Aramais Robert Zakharian

IPC: G02B6/036 ,  G02B6/02

CPC classification number: G02B6/036 ,  G02B6/02009 ,  G02B6/02295

Abstract: An optical fiber is provided that includes a core region and a cladding region. The core region is formed of silica glass doped with chlorine and/or an alkali metal. The cladding region surrounds the core region and includes an inner cladding directly adjacent to the core region, an outer cladding surrounding the inner cladding, and a trench region disposed between the inner cladding and the outer cladding in a radial direction. The trench region has a volume of about 30% Δ-micron2 or greater. Additionally, the optical fiber has an effective area at 1550 nm of about 100 micron2 or less.

公开(公告)号：US11782207B2

公开(公告)日：2023-10-10

申请号：US17381756

申请日：2021-07-21

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Matthew Ryan Drake ,  Shandon Dee Hart ,  Ming-Jun Li ,  Joseph Edward McCarthy ,  Weijun Niu ,  Pushkar Tandon

IPC: G02B6/02

CPC classification number: G02B6/02014 ,  G02B6/02395

Abstract: An optical fiber is provided that includes a core region, a cladding region having a radius less than about 62.5 microns; a polymer coating comprising a high-modulus layer and a low-modulus layer, wherein a thickness of the low-modulus inner coating layer is in a range of 4 microns to 20 microns, the modulus of the low-modulus inner coating layer is less than or equal to about 0.35 MPa, a thickness of the high-modulus coating layer is in a range of 4 microns to 20 microns, the modulus of the high-modulus inner coating layer is greater than or equal to about 1.6 GPa, and wherein a puncture resistance of the optical fiber is greater than 20 g, and wherein a microbend attenuation penalty of the optical fiber is less than 0.03 dB/km, and wherein an outer diameter of the coated optical fiber is less than or equal to 175 microns.

公开(公告)号：US11675122B2

公开(公告)日：2023-06-13

申请号：US17318510

申请日：2021-05-12

Applicant: CORNING INCORPORATED

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

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

CPC classification number: G02B6/02395 ,  G02B6/03627 ,  C03C25/1065 ,  C03C25/50 ,  G02B6/02009 ,  G02B6/0286

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：US11287567B2

公开(公告)日：2022-03-29

申请号：US16419403

申请日：2019-05-22

Applicant: Corning Incorporated

Inventor： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

IPC: G02B6/028 ,  G02B6/02 ,  H01S5/183

Abstract: Optical fibers having a large effective area and a low cutoff wavelength are disclosed. Three main embodiments of the optical fiber allow for single-mode operation at wavelengths greater than 980 nm, and have a large effective area with low bend losses and low dispersion at 1310 nm. The large effective area optical fiber is expected to be particularly useful for data center applications due to its ability to efficiently optically couple with VCSELs and photonic integrated devices. Integrated systems and optical communication systems that employ the optical fibers are also disclosed.

公开(公告)号：US11249249B2

公开(公告)日：2022-02-15

申请号：US16429203

申请日：2019-06-03

Applicant: CORNING INCORPORATED

Inventor： John Steele Abbott, III ,  Scott Robertson Bickham ,  Thomas Arthur Hanson ,  Tiffany Ann Lindstrom

IPC: G02B6/028 ,  G01M11/00 ,  H04L12/873

Abstract: A method is used to select a multimode fiber meeting requirements of a first minimum bandwidth at a first wavelength and a second minimum bandwidth at a second wavelength different from the first wavelength. Differential mode delay (DMD) data is measured for the multimode fiber at the first wavelength. The DMD data comprises output laser pulse data as a function of the radial position of an input laser pulse having the first wavelength. The DMD data is transformed into mode group space, to obtain relative mode group delay data as a function of mode group. The multimode fiber is selected based on meeting requirements of the first minimum bandwidth at the first wavelength based on a first set of criteria, comprising a first criterion using as input the measured differential mode delay (DMD) data for the multimode fiber measured at the first wavelength. The multimode fiber is selected based on meeting requirements of the second minimum bandwidth at the second wavelength based on a second set of criteria, comprising: a second criterion using as input the relative mode group delay data. A related system is also described.

公开(公告)号：US20210356661A1

公开(公告)日：2021-11-18

申请号：US17316292

申请日：2021-05-10

Applicant: CORNING INCORPORATED

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

IPC: G02B6/12 ,  G02B6/02 ,  C03C13/04 ,  C03C25/105 ,  C08G18/32 ,  C08F22/14 ,  C08F22/10

Abstract: A disclosed multimode optical fiber comprises a core and a cladding surrounding the core. The core has an outer radius r1 in between 20 μm and 30 μm. The cladding includes a first outer cladding region having an outer radius r4a and a second outer cladding region having an outer radius r4b less than or equal to 45 μm. The second outer cladding region comprises silica-based glass doped with titania. The optical fiber further includes a primary coating with an outer radius r5 less than or equal to 80 μm, and a thickness (r5−r4) less than or equal to 30 μm. The optical fiber further includes a secondary coating with an outer radius r6 less than or equal to 100 μm. The secondary coating has a thickness (r6−r5) less than or equal to 30 μm, and a normalized puncture load greater than 3.6×10−3 g/micron2.

公开(公告)号：US20210294029A1

公开(公告)日：2021-09-23

申请号：US17184909

申请日：2021-02-25

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Sergejs Makovejs ,  Pushkar Tandon ,  Aramais Robert Zakharian

IPC: G02B6/036 ,  G02B6/02

Abstract: An optical fiber is provided that includes a core region and a cladding region. The core region is formed of silica glass doped with chlorine and/or an alkali metal. The cladding region surrounds the core region and includes an inner cladding directly adjacent to the core region, an outer cladding surrounding the inner cladding, and a trench region disposed between the inner cladding and the outer cladding in a radial direction. The trench region has a volume of about 30% Δ-micron2 or greater. Additionally, the optical fiber has an effective area at 1550 nm of about 100 micron2 or less.

公开(公告)号：US11067744B2

公开(公告)日：2021-07-20

申请号：US16193919

申请日：2018-11-16

Applicant: Corning Incorporated

Inventor： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

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

Abstract: A single mode optical fiber, comprising: (i) a silica based core having a step refractive index profile with an alpha of greater than 10, a relative refractive index Δ1MAX, and an outer radius r1, wherein 6.25 microns>r1≥4.75 microns, the core further comprising Cl, Ge, or a combination thereof; (ii) a first cladding region in contact with and surrounding the core, the first cladding region having a relative refractive index Δ2MIN, an inner radius r1, and an outer radius r2, wherein r2

公开(公告)号：US20210181408A1

公开(公告)日：2021-06-17

申请号：US17112084

申请日：2020-12-04

Applicant: CORNING INCORPORATED

Inventor： Scott Robertson Bickham ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

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

Abstract: A multicore optical fiber includes a first core, a second core, and a common cladding. The first core includes silica and greater than 3 wt % chlorine, a first core centerline, a relative refractive index Δ1MAX, and an outer radius r1. The second core includes silica and greater than 3 wt % chlorine, a second core centerline, a relative refractive index Δ2MAX, and an outer radius r2. A spacing between the first core centerline and the second core centerline is at least 28 micrometers and a crosstalk between the first core and the second core is ≤−30 dB, as measured for a 100 km length of the multicore optical fiber operating at a wavelength of 1550 nm.

公开(公告)号：US20210033461A1

公开(公告)日：2021-02-04

申请号：US16966086

申请日：2019-02-08

Applicant: Corning Incorporated

Inventor： Scott Robertson Bickham ,  Andrew Jay Effenberger, Jr. ,  Mark Christian Sanson

IPC: G01J3/44 ,  G01J3/02 ,  G01J3/12

Abstract: A Raman spectroscopy system is provided. The spectroscopy system includes an optical switch including a first side having a pump inlet and a return outlet, and a second side having a plurality of pump outlets and a plurality of return inlets. The spectroscopy system includes at least one radiation source optically coupled to the pump inlet and a detector optically coupled to the return outlet. The spectroscopy system further includes a pump filter module optically coupled between the at least one radiation source and the pump outlets and a return filter module optically coupled between the detector and the return inlets. The spectroscopy system further includes a plurality of probes, each probe optically connected to at least one of the plurality of pump outlets by at least one excitation fiber and optically coupled to one of the return inlets by at least one emission fiber.