公开(公告)号：US20220291445A1

公开(公告)日：2022-09-15

申请号：US17682379

申请日：2022-02-28

Applicant: CORNING INCORPORATED

Inventor： Ming-Jun Li ,  Pushkar Tandon

IPC: G02B6/036 ,  G02B6/44

Abstract: The disclosure provides optical fibers that exhibit low macrobend loss at 1550 nm at bend diameters between 10 mm and 40 mm. The relative refractive index profile of the fibers includes a trench cladding region with small depth, large width and a trench volume configured to minimize macrobend loss at large and small bend diameters. 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 trench cladding region has a relative refractive index that decreases monotonically from the inner radius to the outer radius. The monotonic decrease in relative refractive index may have a constant slope. The low macrobend loss at large and small diameters makes the optical fibers well suited for space-constrained deployment environments, such as data centers.

公开(公告)号：US20220282853A1

公开(公告)日：2022-09-08

申请号：US17688142

申请日：2022-03-07

Applicant: CORNING INCORPORATED ,  UV PARTNERS, INC.

Inventor： David W. Baarman ,  Boyd Vern Hunter ,  Ming-Jun Li ,  Xiao Li ,  Stephan Lvovich Logunov

IPC: F21V13/02 ,  G02B5/02 ,  A61L2/00

Abstract: Disclosed herein are embodiments of an illuminator for disinfecting a surface. The surface defines a first plane. The illuminator includes a line emitter configured to emit light in a continuous line along at least a portion of at least one edge of the surface. The light has a peak wavelength in a range of 100 nm to 400 nm. The illuminator also includes a curved reflector surface and an exit aperture defining a second plane transverse to the first plane. The line emitter is positioned between the curved reflector surface and the exit aperture, and the curved reflector surface is configured to redirect the light from the line emitter through the exit aperture across the surface.

公开(公告)号：US11431419B2

公开(公告)日：2022-08-30

申请号：US17297029

申请日：2019-11-12

Applicant: CORNING INCORPORATED

Inventor： Ming-Jun Li ,  Daniel Aloysius Nolan

IPC: H04B10/70 ,  G02B6/02 ,  H04B10/2513 ,  H04L9/08

Abstract: A quantum communications system includes a quantum key generation system having a photonic quantum bit generator, a low loss dispersion limiting fiber having a length L, for example greater than 200 km, and a photon detector unit and a communications network having a signal generator, a signal channel, and a signal receiver. The low loss dispersion limiting fiber extends between and optically couples the photonic quantum bit generator and the photon detector unit. Further, the low loss dispersion limiting fiber is structurally configured to limit dispersion at an absolute dispersion rate of about 9 ps/(nm)km or less, and preferably 0.5 ps/(nm)km or less, and induce attenuation at an attenuation rate of about 0.175 dB/km or less such that the quantum key bit information of a plurality of photons output by the one or more photonic quantum bit generators is receivable at the photon detector unit at a bit rate of at least 10 Gbit/sec.

公开(公告)号：US11342649B2

公开(公告)日：2022-05-24

申请号：US17001909

申请日：2020-08-25

Applicant: CORNING INCORPORATED

Inventor： Michael Edward Badding ,  Ming-Jun Li ,  Karan Mehrotra ,  Cheng-Gang Zhuang

IPC: H01P3/16 ,  G02B6/10 ,  H01P11/00

Abstract: The THz waveguides disclosed herein are used to transmit signals having a THz frequency in the range from 0.1 THz to 10 THz and include an alumina core surrounded by an optional cladding. The core may have a diameter (D1) in the range from 10 μm to 500 μm and may be comprised of a ceramic ribbon having a dielectric constant (Dk). The optional cladding may have a dielectric constant (Dk) less than the core. The THz waveguides can be formed using a continuous firing process and nano-perforation technology that enables access to a wide form factor range. In one example, rectangular waveguides, or ribbons, may be fabricated in the 10 μm to 200 μm thick range at widths in the range from sub-millimeters to several meters and lengths in the range from millimeters to several hundred meters.

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：US11261121B2

公开(公告)日：2022-03-01

申请号：US16165633

申请日：2018-10-19

Applicant: Corning Incorporated

Inventor： Dana Craig Bookbinder ,  Steven Bruce Dawes ,  Richard Michael Fiacco ,  Ming-Jun Li ,  Pushkar Tandon

IPC: C03B37/014 ,  C03B37/012 ,  C03B37/018 ,  C03B37/027 ,  G02B6/02

Abstract: Preparation of halogen-doped silica is described. The preparation includes doping silica with high halogen concentration, sintering halogen-doped silica to a closed-pore state, and subjecting the closed-pore silica body to a thermal treatment process and/or a pressure treatment process. The temperature of thermal treatment is sufficiently high to facilitate reaction of unreacted doping precursor trapped in voids or interstices of the glass structure, but is below temperatures conducive to foaming. Core canes or fibers drawn from halogen-doped silica subjected to the thermal treatment and/or pressure treatment show improved optical quality and possess fewer defects. The thermal treatment and/or pressure treatment is particularly advantageous when used for silica doped with high concentrations of halogen.

公开(公告)号：US20210347690A1

公开(公告)日：2021-11-11

申请号：US17238618

申请日：2021-04-23

Applicant: CORNING INCORPORATED

Inventor： Kenneth Edward Hrdina ,  Ming-Jun Li ,  Haitao Zhang

IPC: C03C25/607

Abstract: A system and method for nitridizing a glass article includes supplying a source of a nitridizing gas including gaseous NH3 to a glass article supported within a furnace assembly and heating the glass article. In some embodiments, the system includes a handle assembly configured to support the glass article within the furnace assembly and a gas supply conduit carried by the handle and configured to supply the nitridizing gas to the glass article. In some embodiments, a method of nitridizing a glass article includes supplying the nitridizing gas such that a residence time of the nitridizing gas at temperatures greater than 500° C. corresponds to a predetermined time period. In some embodiments, a method of nitridizing a glass article includes supplying the nitridizing gas such that the glass articles is exposed to the nitridizing gas within a contact time tc.

公开(公告)号：US11125938B2

公开(公告)日：2021-09-21

申请号：US16741993

申请日：2020-01-14

Applicant: Corning Incorporated

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

IPC: G02B6/36 ,  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 Δ1max % 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 Δ2min such that Δ2min

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：US20210214267A1

公开(公告)日：2021-07-15

申请号：US15734078

申请日：2019-05-31

Applicant: Corning Incorporated

Inventor： Yunfeng Gu ,  Nicolas LeBlond ,  Ming-Jun Li ,  Jeffery Scott Stone ,  Haitao Zhang

IPC: C03C3/06 ,  C03C23/00

Abstract: A silica-based substrate includes a glass phase and a dispersed phase having carbon, such that the silica-based substrate has a thickness of at least 10 gm. Also disclosed is a method of forming a silica-based substrate, the method including contacting a porous silica soot preform with an organic solution having at least one hydrocarbon precursor to form a doped silica soot preform and heating the doped silica soot preform in an inert atmosphere to form the silica-based substrate.