公开(公告)号：US20240248253A1

公开(公告)日：2024-07-25

申请号：US18411143

申请日：2024-01-12

Applicant: CORNING INCORPORATED

Inventor： Peter Gottfried Hebgen ,  Hazel Benton Matthews, III ,  Snigdharaj Kumar Mishra ,  Samantha Allissa Silver

IPC: G02B6/02

CPC classification number: G02B6/02395

Abstract: The present disclosure provides low-diameter optical fibers with intermediate effective area at 1550 nm that exhibit low macrobend loss at 1550 nm at bend diameters of 32 mm and 50 mm, low microbend loss at 1550 nm, and low attenuation at 1550 nm. The optical fibers are coated and have an outer coating diameter less than 210 μm. The optical fibers feature a cladding with a trench cladding region having a trench volume less than 20% μm2.

公开(公告)号：US11506835B2

公开(公告)日：2022-11-22

申请号：US17082688

申请日：2020-10-28

Applicant: CORNING INCORPORATED

Inventor： Peter Gottfried Hebgen ,  Hazel Benton Matthews, III ,  Snigdharaj Kumar Mishra

IPC: G02B6/028 ,  G02B6/02

Abstract: The present disclosure provides optical fibers that exhibit low macrobend loss at 1550 nm at bend diameters greater than 40 mm. The relative refractive index profile of the fibers includes a trench cladding region having a trench volume configured to minimize macrobend loss at large bend diameters. The thickness and/or depth of the trench cladding region are controlled to reduce trench volume to a degree consistent with reducing macrobend loss at bend diameters greater than 40 mm. The optical fiber includes an outer cladding region that surrounds and is directly adjacent to the trench cladding region and an optional offset cladding region between the trench cladding region and the core region. In some embodiments, the core region is a segmented core region that includes inner and outer core regions. The low macrobend loss available from the optical fibers makes them particularly suitable for applications in submarine telecommunications systems.

公开(公告)号：US20220187531A1

公开(公告)日：2022-06-16

申请号：US17547672

申请日：2021-12-10

Applicant: CORNING INCORPORATED

Inventor： Peter Gottfried Hebgen ,  Hazel Benton Matthews, III ,  Snigdharaj Kumar Mishra

IPC: G02B6/028 ,  G02B6/02

Abstract: Embodiments of the current disclosure include low moat volume single mode ultra-low loss optical fibers. In some embodiments, a single mode optical fiber includes a first core region; a second core region surrounding and directly adjacent to the first core region, wherein a volume V of the second core region is less than or equal to 14% Δμm2; a cladding region surrounding the core region; and wherein the optical fiber has a cable cutoff of less than 1260 nm, a mode field diameter at 1310 nm of 8.6 microns to 9.7 microns, a mode field diameter at 1550 nm of 9.9 microns to 11 microns, and an attenuation at 1550 nm of less than or equal to 0.17 dB/km.

公开(公告)号：US20210116634A1

公开(公告)日：2021-04-22

申请号：US17071478

申请日：2020-10-15

Applicant: CORNING INCORPORATED

Inventor： Peter Gottfried Hebgen ,  Stephan Lvovich Logunov ,  Hazel Benton Matthews, III ,  Snigdharaj Kumar Mishra

IPC: G02B6/028 ,  G02B6/036 ,  G02B6/02 ,  C03C13/04

Abstract: An optical fiber includes a core portion having a radius rC and a graded refractive index profile ΔC having an alpha value greater than or equal to 1 and less than or equal to 8. The core portion includes a silica-based glass and a down-dopant, where a concentration of the down-dopant is graded such that the concentration of the down-dopant decreases from the radius rC towards the center of the core portion. The optical fiber comprises a cladding portion surrounding the core portion and having a relative refractive index ΔOC that is less than a maximum refractive index ΔCmax of the core portion.

公开(公告)号：US11681098B2

公开(公告)日：2023-06-20

申请号：US17547672

申请日：2021-12-10

Applicant: CORNING INCORPORATED

Inventor： Peter Gottfried Hebgen ,  Hazel Benton Matthews, III ,  Snigdharaj Kumar Mishra

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

CPC classification number: G02B6/0281 ,  G02B6/02009 ,  G02B6/0286 ,  G02B6/02214 ,  G02B6/03622 ,  G02B6/02028 ,  G02B6/03633

Abstract: Embodiments of the current disclosure include low moat volume single mode ultra-low loss optical fibers. In some embodiments, a single mode optical fiber includes a first core region; a second core region surrounding and directly adjacent to the first core region, wherein a volume V of the second core region is less than or equal to 14% Δμm2; a cladding region surrounding the core region; and wherein the optical fiber has a cable cutoff of less than 1260 nm, a mode field diameter at 1310 nm of 8.6 microns to 9.7 microns, a mode field diameter at 1550 nm of 9.9 microns to 11 microns, and an attenuation at 1550 nm of less than or equal to 0.17 dB/km.

公开(公告)号：US20210157048A1

公开(公告)日：2021-05-27

申请号：US17082688

申请日：2020-10-28

Applicant: CORNING INCORPORATED

Inventor： Peter Gottfried Hebgen ,  Hazel Benton Matthews, III ,  Snigdharaj Kumar Mishra

IPC: G02B6/028 ,  G02B6/02

Abstract: The present disclosure provides optical fibers that exhibit low macrobend loss at 1550 nm at bend diameters greater than 40 mm. The relative refractive index profile of the fibers includes a trench cladding region having a trench volume configured to minimize macrobend loss at large bend diameters. The thickness and/or depth of the trench cladding region are controlled to reduce trench volume to a degree consistent with reducing macrobend loss at bend diameters greater than 40 mm. The optical fiber includes an outer cladding region that surrounds and is directly adjacent to the trench cladding region and an optional offset cladding region between the trench cladding region and the core region. In some embodiments, the core region is a segmented core region that includes inner and outer core regions. The low macrobend loss available from the optical fibers makes them particularly suitable for applications in submarine telecommunications systems.