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：US20180224607A1

公开(公告)日：2018-08-09

申请号：US15888666

申请日：2018-02-05

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Dale Robert Powers ,  Pushkar Tandon

IPC: G02B6/30 ,  G02B6/028 ,  G02B6/38 ,  G02B6/42 ,  G02B6/02 ,  C03B37/16 ,  C03B37/01 ,  C03B32/00 ,  C03C13/04

Abstract: An optical fiber for efficient coupling of optical signals to photonic devices. The optical fiber includes a Cl doped tapered core region with a changing outer diameter and changing maximum core refractive index to provide improved coupling at wavelength of interest to photonic devices. The photonic devices may be, for example, silicon photonic devices with an operating wavelength at or near 1310 nm, or at or near 1550 nm.

公开(公告)号：US09995873B2

公开(公告)日：2018-06-12

申请号：US15658813

申请日：2017-07-25

Applicant: Corning Incorporated

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

IPC: G02B6/036 ,  G02B6/02

CPC classification number: G02B6/02009 ,  G02B6/0365

Abstract: Optical fibers having a large effective area are disclosed. Three main embodiments of the optical fiber allow for single-mode operation at wavelengths of 850 nm, 980 nm and 1060 nm, respectively and have a large effective area with low bend losses. 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 photonic integrated devices. Integrated systems and optical communication systems that employ the optical fibers are also disclosed.

公开(公告)号：US09989699B2

公开(公告)日：2018-06-05

申请号：US15790726

申请日：2017-10-23

Applicant: Corning Incorporated

Inventor： Kevin Wallace Bennett ,  Dana Craig Bookbinder ,  Douglas Llewellyn Butler ,  Ming-Jun Li ,  Pushkar Tandon

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

CPC classification number: G02B6/03661 ,  G02B6/02014 ,  G02B6/02242 ,  G02B6/02266 ,  G02B6/02333 ,  G02B6/0281 ,  G02B6/0286 ,  G02B6/03655 ,  G02B6/03683 ,  G02B6/2835

Abstract: An optical fiber comprising: (i) a core region comprising an outer radius r1, and 3.0≤r1≤7.0 microns and a relative refractive index Δ1max and 0.32%≤Δ1max≤0.5%; (b) a depressed index cladding region surrounding the core region comprising an outer radius r3 and a relative refractive index Δ3 less than −0.2%, and trench volume V3 wherein 45% Δ-micron2≤|V3|≤200% Δ-micron2; (c) a first outer cladding region surrounding the depressed index cladding region and comprising a relative refractive index Δ4 and an outer radius r4; and (d) a second outer cladding layer comprising 5 wt %-20 wt % titania, a relative refractive index Δ5, and a thickness TM, wherein 3 micron≤TM≤30 microns, and outer radius r5≤65 microns; the optical fiber has a mode field diameter MFD1550 and 8 microns≤MFD1550≤10.5 microns, a cutoff wavelength ≤1550 nm when bent 1 turn around a 2.5 mm radius mandrel, and a bending loss at 1550 nm when using a mandrel comprising a radius of 2.5 mm of ≤1.0 dB/turn.

公开(公告)号：US20180120503A1

公开(公告)日：2018-05-03

申请号：US15790726

申请日：2017-10-23

Applicant: Corning Incorporated

Inventor： Kevin Wallace Bennett ,  Dana Craig Bookbinder ,  Douglas Llewellyn Butler ,  Ming-Jun Li ,  Pushkar Tandon

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

CPC classification number: G02B6/03661 ,  G02B6/02014 ,  G02B6/02242 ,  G02B6/02266 ,  G02B6/02333 ,  G02B6/0281 ,  G02B6/0286 ,  G02B6/03655 ,  G02B6/03683 ,  G02B6/2835

Abstract: An optical fiber comprising: (i) a core region comprising an outer radius r1, and 3.0≤r1≤7.0 microns and a relative refractive index Δ1max and 0.32%≤Δ1max≤0.5%; (b) a depressed index cladding region surrounding the core region comprising an outer radius r3 and a relative refractive index Δ3 less than −0.2%, and trench volume V3 wherein 45% Δ-micron2≤|V3|≤200% Δ-micron2; (c) a first outer cladding region surrounding the depressed index cladding region and comprising a relative refractive index Δ4 and an outer radius r4; and (d) a second outer cladding layer comprising 5 wt %-20 wt % titania, a relative refractive index Δ5, and a thickness TM, wherein 3 micron≤TM≤30 microns, and outer radius r5≤65 microns; the optical fiber has a mode field diameter MFD1550 and 8 microns≤MFD1550≤10.5 microns, a cutoff wavelength

公开(公告)号：US09919946B2

公开(公告)日：2018-03-20

申请号：US15412283

申请日：2017-01-23

Applicant: Corning Incorporated

Inventor： Amanda Lee Billings ,  Dana Craig Bookbinder ,  Robert Brett Desorcie ,  Liam Ruan de Paor ,  Pushkar Tandon ,  Li Yang

IPC: G02B6/02 ,  C03B37/014 ,  C03B37/012 ,  C03B37/027 ,  G02B6/036

CPC classification number: C03B37/01446 ,  C03B37/01211 ,  C03B37/01248 ,  C03B37/027 ,  C03B2201/075 ,  C03B2201/20 ,  C03B2203/23 ,  G02B6/02 ,  G02B6/021 ,  G02B6/03627 ,  G02B6/0365 ,  Y02P40/57

Abstract: A method for forming an optical fiber preform and fibers drawn from the preform. The method includes forming a soot cladding monolith, inserting a consolidated core cane into the internal cavity, and processing the resulting core-cladding assembly to form a preform. Processing may include exposing the core-cladding assembly to a drying agent and/or dopant precursor, and sintering the core-cladding assembly in the presence of a reducing agent to densify the soot cladding monolith onto the core cane to form a preform. The preform features low hydroxyl content and low sensitivity to hydrogen. Fibers drawn from the preform exhibit low attenuation losses from absorption by the broad band centered near 1380 nm.

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：US20170363806A1

公开(公告)日：2017-12-21

申请号：US15601527

申请日：2017-05-22

Applicant: Corning Incorporated

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

IPC: G02B6/028 ,  C03B37/15 ,  C03B37/012 ,  G02B6/02 ,  G02B6/28 ,  G02B6/036

CPC classification number: G02B6/0288 ,  C03B37/012 ,  C03B37/01453 ,  C03B37/15 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/23 ,  C03B2203/26 ,  G02B6/02047 ,  G02B6/02395 ,  G02B6/036 ,  G02B6/28

Abstract: A method of making a multi-mode optical fiber that includes: depositing a porous germania-doped silica soot to form a germania-doped porous soot preform; depositing a porous silica layer over the porous soot preform; doping the porous soot preform and the porous silica layer with a fluorine dopant to form a co-doped soot preform having a core region and a fluorine-doped trench region; consolidating the co-doped soot preform to form a sintered glass, co-doped core preform having a refractive index alpha profile between 1.9 and 2.2 measured at 850 nm; depositing a cladding comprising silica over the sintered glass, co-doped preform to form a multi-mode optical fiber preform; drawing the optical fiber preform into a multi-mode optical fiber. Further, the step of doping the germania-doped soot preform and the porous silica layer is conducted according to a doping parameter (Φ) that is set between 20 and 300, and given by: Φ = 1 × 10 14  R prc 2  exp  ( - E / RT dop )  T dop 1 / 2 x 3 / 4 .

公开(公告)号：US20170362115A1

公开(公告)日：2017-12-21

申请号：US15529583

申请日：2015-11-24

Applicant: Corning Incorporated

Inventor： Steven Bruce Dawes ,  Douglas Hull Jennings ,  Pushkar Tandon

IPC: C03C3/06 ,  C03B37/014 ,  C03B25/02 ,  C03B19/14 ,  C03B37/012 ,  G02B6/036 ,  C03B37/018

CPC classification number: C03C3/06 ,  C03B19/066 ,  C03B19/1453 ,  C03B19/1461 ,  C03B25/02 ,  C03B37/01282 ,  C03B37/014 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01853 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/42 ,  G02B6/036

Abstract: A method of forming an optical element is provided. The method includes producing silica-based soot particles using chemical vapor deposition, the silica-based soot particles having an average particle size of between about 0.05 μm and about 0.25 μm. The method also includes forming a soot compact from the silica-based soot particles and doping the soot compact with a halogen in a closed system by contacting the silica-based soot compact with a halogencontaining gas in the closed system at a temperature of less than about 1200° C.