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：US20210223469A1

公开(公告)日：2021-07-22

申请号：US17146881

申请日：2021-01-12

Applicant: CORNING INCORPORATED

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

IPC: G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  C09D4/00 ,  C09D175/04 ,  C09D133/14

Abstract: The optical fiber disclosed has a glass fiber including a core and a cladding. The core comprises silica glass doped with chlorine and having an outer radius r1 between 3.0 microns and 10.0 microns. The cladding has an outer radius r4 not less than 50.0 microns. A primary coating surrounding the cladding has a thickness (r5−r4) between 5.0 microns and 20.0 microns, and an in situ modulus less than 0.30 MPa. A secondary coating surrounding the primary coating has a thickness (r6−r5) between 8.0 microns and 30.0 microns, a Young's modulus greater than 1500 MPa, and a normalized puncture load greater than 3.6×10−3 g/micron2. The optical fiber has a 22-meter cable cutoff wavelength less than 1530 nm, an attenuation at 1550 nm of less than 0.17 dB/km, and a bending loss at 1550 nm of less than 3.0 dB/turn.

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.

公开(公告)号：US10591668B2

公开(公告)日：2020-03-17

申请号：US16045188

申请日：2018-07-25

Applicant: Corning Incorporated

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

IPC: G02B6/28 ,  G02B6/028 ,  G02B6/036 ,  G02B6/02

Abstract: An optical fiber includes (i) a chlorine doped silica based core having a core alpha (Coreα)≥4, a radius r1, and a maximum refractive index delta Δ1 max% and (ii) a cladding surrounding the core. The cladding surrounding the core includes a) a first inner cladding region adjacent to and in contact with the core and having a refractive index delta Δ2, a radius r2, and a minimum refractive index delta Δ2 min such that Δ2 min

公开(公告)号：US10146008B2

公开(公告)日：2018-12-04

申请号：US15702961

申请日：2017-09-13

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Brian Lee Harper ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC: G02B6/028 ,  G02B6/036 ,  C03B37/014 ,  C03B37/018 ,  G02B6/02 ,  C03B37/025

Abstract: An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

公开(公告)号：US10139561B2

公开(公告)日：2018-11-27

申请号：US15759648

申请日：2016-09-14

Applicant: Corning Incorporated

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

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

Abstract: A single-mode fiber with low loss and low bend loss is disclosed. The fiber is single mode and has a central core (10), an inner cladding (20) and an outer cladding (30). The central core (10) has a radius r1 and relative refractive index with a maximum value of Δ1max and a core alpha greater than 1 and less than 10, and a Ge02 dopant concentration of greater than 1 wt. % and less than or equal to 5 wt. %. The inner cladding (20) has an outer radius r2>9 micrometers and a relative refractive index Δ2 where Δ2 is less then −0.15%. The outer cladding (30) has a refractive index Δ3, wherein Δ1>Δ3>Δ2. The difference Δ3−Δ2>0.005%. The inner cladding includes fluorine having a concentration of greater than or equal to 0.5 wt. % and the outer cladding is updoped with respect to inner cladding.

公开(公告)号：US09851499B2

公开(公告)日：2017-12-26

申请号：US15435679

申请日：2017-02-17

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Hazel Benton Matthews, III ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

IPC: G02B6/036 ,  G02B6/02 ,  C03C13/04 ,  C03C3/06 ,  C03B37/018

CPC classification number: G02B6/02019 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/018 ,  C03B37/01846 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2207/32 ,  C03C3/06 ,  C03C13/045 ,  C03C13/046 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2213/00 ,  G02B6/02009 ,  G02B6/02238 ,  G02B6/02395 ,  G02B6/03627 ,  G02B6/0365

Abstract: An optical fiber with large effective area, low bending loss and low attenuation. The optical fiber includes a core, an inner cladding region, and an outer cladding region. The core region includes a spatially uniform updopant to minimize low Rayleigh scattering and a relative refractive index and radius configured to provide large effective area. The inner cladding region features a large trench volume to minimize bending loss. The core may be doped with Cl and the inner cladding region may be doped with F.

公开(公告)号：US20170242186A1

公开(公告)日：2017-08-24

申请号：US15429421

申请日：2017-02-10

Applicant: Corning Incorporated

Inventor： Snigdharaj Kumar Mishra ,  Oleksandr Kogan ,  Simit Mayank Patel ,  Elios Klemo ,  Daniel J. Halvorson

IPC: G02B6/028 ,  G02B6/036

CPC classification number: G02B6/0288 ,  G02B6/03638

Abstract: An optical fiber including a multimode core having a radius, R1, and a maximum relative refractive index, Δ1MAX, at a wavelength λ0, an inner clad layer surrounding the core and having a radial thickness, T2, and a minimum relative refractive index, Δ2MIN, of about 0.0% at a wavelength of λ0, an intermediate clad layer surrounding the inner clad layer and having a radial thickness, T3, and a maximum relative refractive index Δ3MAX and an outer clad layer surrounding the inner clad layer and having a radial thickness, T4, and a maximum relative refractive index, Δ4MIN, at a wavelength of λ0. The optical fiber satisfies the following relationship: Δ1MAX>Δ3MAX>Δ2MIN, and the optical fiber exhibits an overfilled bandwidth of greater than or equal to about 1.5 GHz-km at λ0.

公开(公告)号：US20170017032A1

公开(公告)日：2017-01-19

申请号：US15166772

申请日：2016-05-27

Applicant: Corning Incorporated

Inventor： Snigdharaj Kumar Mishra ,  Michal Mlejnek ,  James Andrew West ,  William Allen Wood ,  Aramais Robert Zakharian

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

CPC classification number: G02B6/03655 ,  G02B6/02019 ,  G02B6/02395 ,  G02B6/0281 ,  G02B6/03683

Abstract: An optical fiber comprising: (i) a core comprising silica and having a maximum relative refractive index delta Δ1MAX; and LP01 effective area>100 μm2 at 1550 nm;(ii) an inner cladding surrounding the core and having a minimum relative refractive index delta Δ2MIN and ΔcoreMAX>Δ2MIN; (iii) an outer cladding surrounding the inner cladding and comprising a first outer cladding portion with a maximum refractive index Δ3A such that Δ3A>Δ2MIN; and another outer cladding portion surrounding the first outer cladding portion with a maximum refractive index delta Δ3B wherein with a maximum refractive index delta Δ3B wherein Δ3B>Δ3A, said another portion being the outermost portion of the outer cladding; and (iv) a coating layer surrounding the outer cladding, and in contact with said another outer cladding portion, the coating layer having a relative refractive index delta ΔC wherein ΔC>Δ3B.

Abstract translation: （ii）围绕芯的内包层，具有最小相对折射率ΔΔ2MIN和ΔcoreMAX>Δ2MIN; （iii）围绕所述内包层的外包层，并且包括具有最大折射率Δ3A的第一外包层部分，使得Δ3A>Δ2MIN; 以及另一个外包层部分，其围绕所述第一外包层部分具有最大折射率ΔΔ3B，其中最大折射率ΔΔ3B其中Δ3B>Δ3A，所述另一部分是所述外包层的最外部分; 以及（iv）围绕所述外包层的涂层，并且与所述另一外包层部分接触，所述涂层具有相对折射率ΔΔC，其中ΔC>Δ3B。

公开(公告)号：US09383511B2

公开(公告)日：2016-07-05

申请号：US14224155

申请日：2014-03-25

Applicant: Corning Incorporated

Inventor： Scott Robertson Bickham ,  Kevin Alton Lewis ,  Snigdharaj Kumar Mishra ,  Manuela Ocampo ,  Joan Diana Patterson

IPC: G02B6/028 ,  G02B6/036 ,  G02B6/02 ,  C03C25/10 ,  C03C25/28 ,  C03C25/32

CPC classification number: G02B6/02009 ,  C03C25/1065 ,  C03C25/285 ,  C03C25/326 ,  G02B6/02395 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/0365

Abstract: Optical fibers having a mode field diameter at 1310 nm of at least 8.8 μm, wire mesh covered drum microbending losses at 1550 nm less than 0.03 dB/km, and a 2 m cutoff wavelength less than 1320 nm. The fibers may include a central core region, an inner cladding region, an outer cladding region, a primary coating with an in situ modulus less than 0.20 MPa and glass transition temperature less than −35° C., and a secondary coating with an in situ modulus greater than 1500 MPa. The fibers may further include a depressed index cladding region. The relative refractive index of the central core region may be greater than the relative refractive index of the outer cladding region may be greater than the relative refractive index of the inner cladding region. The fibers may be produced at draw speeds of 30 m/s or greater.

Abstract translation: 具有至少8.8μm的1310nm的模场直径的光纤，在1550nm处的丝网覆盖滚筒微弯损耗小于0.03dB / km，以及小于1320nm的2μm截止波长。 纤维可以包括中心芯区域，内包层区域，外包层区域，原位模量小于0.20MPa的初级涂层和玻璃化转变温度低于-35℃，以及具有 原位模数大于1500MPa。 纤维还可以包括凹陷的折射率包层区域。 中心纤芯区域的相对折射率可以大于外包层区域的相对折射率可能大于内包层区域的相对折射率。 纤维可以以30m / s或更大的拉伸速度生产。