Corning Incorporated

Corning Research & Development Corporation

Corning Optical Communications LLC

Ruchi Sarda Tandon

Pushkar Tandon

Scott Robertson Bickham

Dana Craig Bookbinder

Kevin Wallace Bennett

Ming-Jun Li

Ching-Kee Chien

John William Botelho

Bin Yang

Yangbin Chen

Darren Andrew Stainer

Bryan William Wakefield

Stephan Lvovich Logunov

Snigdharaj Kumar Mishra

David Alan Seddon

Michael De Jong

Anne Germaine Bringuier

Andy Fenglei Zhou

Robert Clark Moore

Manuela Ocampo

Donald Kennedy Hall

Claudio Mazzali

Inna Igorevna Kouzmina

Ximao Feng

Shudong Xiao

Wen-Lung Kuang

Michael James Todt

Jill Ann Cummings

Konrad Jan Koziel

John W Botelho

Dana Graig Bookbinder

Dana G Bookbinder

A fiber optic connector that includes a connector body comprising a ferrule retaining portion, a pusher engagement portion and a body cable passage extending through the pusher engagement portion and the ferrule retaining portion. The connector includes a ferrule assembly structurally configured to be retained by the ferrule retaining portion with an optical fiber bore of the ferrule assembly in alignment with the body cable passage. The connector includes a pusher structurally configured to axially engage the pusher engagement portion with a pusher cable passage in alignment with the body cable passage, and a seal component with superabsorbent properties.

Fiber optic connectors and connectorized cable assembly with sealing components

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 rbetween 3.0 microns and 10.0 microns. The cladding has an outer radius rnot less than 50.0 microns. A primary coating surrounding the cladding has a thickness (r-r) 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 (r-r) between 8.0 microns and 30.0 microns, a Young's modulus greater than 1500 MPa, and a normalized puncture load greater than 3.6×10g/micron. 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.

Reduced coating diameter chlorine-doped silica optical fibers with low loss and microbend sensitivity

An optical fiber curing component includes a first tube comprising a first body defining a first interior surface and a first exterior surface, the first tube defining a first aperture and a second aperture on opposite ends of a first cavity, wherein the first tube defines a central axis extending through the first cavity; light sources coupled to the first body of the first tube and configured to emit light toward the central axis of the first tube, wherein each of the light sources intersect a common plane defined perpendicular to the central axis of the first tube; a silica glass article, having an anti-reflective coating, disposed between each of the plurality of light sources and the central axis of the first tube; and a reflective coating positioned on the interior surface of the first body and configured to reflect the light toward the central axis of the first tube.

Methods and apparatuses for UV curing of optical fiber coatings

The optical fibers disclosed is a single mode optical fiber comprising a core region and a cladding region surrounding and directly adjacent to the core region. The core region can have a radius rin a range from 3 &#x3bc;m to 7 &#x3bc;m and a relative refractive index profile &#x394;having a maximum relative refractive index &#x394;in the range from 0.25% to 0.50%. The cladding region can include a first outer cladding region and a second outer cladding region surrounding and directly adjacent to the first outer cladding region. The first outer cladding region can have a radius r. The second outer cladding region can have a radius rless than or equal to 45 &#x3bc;m and comprising silica based glass doped with titania.

Reduced diameter single mode optical fibers with high mechanical reliability

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 &#x3bc;m.

Optical fiber cable with high fiber count

Embodiments of an optical fiber cable are provided. The cable includes a cable jacket and at least one buffer tube. Each buffer tube surrounds a plurality of optical fibers. The cable jacket surrounds the at least one buffer tube. Further, a coating of superabsorbent, swellable hot melt is applied to at least one of the following locations: (i) along at least a portion of the length of at least one of the plurality of optical fibers; (ii) along at least a portion of the length of the exterior or interior surface of the at least one buffer tube; or (iii) along at least a portion of the length of the interior surface of the cable jacket. Moreover, the superabsorbent, swellable hot melt is capable of absorbing at least 50 g of water per gram of superabsorbent, swellable hot melt.

Super-absorbent swellable hot melt coated optical fibers, buffer tubes, cable designs thereof and manufacturing processes

A disclosed multimode optical fiber comprises a core and a cladding surrounding the core. The core has an outer radius rin between 20 &#x3bc;m and 30 &#x3bc;m. The cladding includes a first outer cladding region having an outer radius rand a second outer cladding region having an outer radius rless than or equal to 45 &#x3bc;m. The second outer cladding region comprises silica-based glass doped with titania. The optical fiber further includes a primary coating with an outer radius rless than or equal to 80 &#x3bc;m, and a thickness (r&#x2212;r) less than or equal to 30 &#x3bc;m. The optical fiber further includes a secondary coating with an outer radius rless than or equal to 100 &#x3bc;m. The secondary coating has a thickness (r&#x2212;r) less than or equal to 30 &#x3bc;m, and a normalized puncture load greater than 3.6&#xd7;10g/micron.

Reduced diameter multi mode optical fibers with high mechanical reliability

The present disclosure provides coating compositions and cured products formed from the coating compositions. The cured products can be formed at high cure speeds from the coating compositions and feature low Young's modulus, high tear strength, and/or high tensile toughness. The cured products can be used as primary coatings for optical fibers. The primary coatings provide good microbending performance and are resistant to defect formation during fiber coating processing and handling operations. The coating compositions include an oligomer, an alkoxylated monofunctional acrylate monomer, and preferably, an N-vinyl amide compound.

Fiber coating compositions with high cure speed

An optical fiber coating die assembly is provided. The optical fiber coating die assembly includes a housing defining a guide chamber having an inlet for receiving optical fiber and an outlet, a guide die located at the outlet of the guide chamber, and a sizing die. The optical fiber coating die assembly also includes a coating applicator disposed between the guide die and the sizing die, and a tube operatively coupled to the inlet of the guide chamber and axially aligned with the chamber to receive the optical fiber fed into the guide chamber and provide a barrier to air flow.

Optical fiber coating die assembly having inlet tube

An optical fiber draw system and method of coating an optical fiber. The system includes a furnace for heating an optical fiber preform, a draw assembly for drawing the optical fiber at a draw speed greater than 50 meters per second, a first coating applicator for applying a first coating onto the fiber, and a first curing assembly comprising a first plurality of light sources comprising light-emitting diodes for partially curing the first coating. The optical fiber draw system also includes a second coating applicator for applying a second coating onto the fiber on top of the first coating, and a second curing system comprising a second plurality of light sources for curing the second coating, wherein the first coating is further cured in the range of 15-50 percent after leaving the first curing assembly.

High speed draw optical fiber coating system and method

The high-density FAU comprises a support substrate having a grooved front-end section that supports glass end sections of the small diameter low-attenuation optical fibers. A cover is disposed on the front-end section and secured thereto to hold the glass end sections in place. The substrate and the cover can be made of the same glass or glasses having about the same CTE. The glass end sections have a diameter d4 so that the pitch P2 of the fibers at the front end of the FAU can be equal to or greater than d4, wherein d4=2r, with rbeing the radius of the glass end section as defined by the optical fiber cladding. The glass end section has a radius rless than 45 microns, allowing for a high-density FAU and a high-density optical interconnection device.

High-density FAUs and optical interconnection devices employing small diameter low attenuation optical fiber

An optical fiber comprising: (a) a core having an outer radius r; (b) a cladding having an outer radius r&#x3c;32.5 microns; (c) a primary coating surrounding the cladding having an outer radius r, a thickness t&#x3e;8 microns, in situ modulus E&#x2264;0.35 MPa and a spring constant &#x3c7;&#x3c;2.0 MPa, where &#x3c7;=2Er/t; and (d) a secondary coating surrounding said primary coating, the secondary coating having an outer radius rand a thickness t=r&#x2212;r, and in situ modulus Eof 1200 MPa or greater; t&#x3e;8 microns, r&#x2264;56 microns. The fiber has a mode field diameter MFD greater than 8.2 microns at 1310 nm; a fiber cutoff wavelength of less than 1310 nm; and a bend loss at a wavelength of 1550 nm, when wrapped around a mandrel having a diameter of 10 mm, of less than 1.0 dB/turn.

Small outer diameter low attenuation optical fiber

An optical fiber comprising: a core having an outer radius r; a cladding having an outer radius r&#x2264;31 microns; a primary coating surrounding the cladding having an outer radius r, a thickness t&#x3e;10 microns, in situ modulus Eof 0.5 MPa or less, and a spring constant &#x3c7;&#x3c;1 MPa, where &#x3c7;=2Er/t; and a secondary coating surrounding said primary coating, the secondary coating having an outer radius r, a thickness t=r-r, in situ modulus Eof 1200 MPa or greater; tgreater than 9.5 microns, wherein ris 50 to 67.5 microns. The fiber has a mode field diameter MFD greater than 8.2 microns at 1310 nm; a fiber cutoff wavelength of less than 1310 nm; and a bend loss at a wavelength of 1550 nm, when wrapped around a mandrel having a diameter of 10 mm, of less than 1.0 dB/turn.

Small diameter low attenuation optical fiber

An optical fiber comprising: a core having an outer radius r; a cladding having an outer radius r&#x3c;45 microns; a primary coating surrounding the cladding and having an outer radius rand a thickness t&#x3e;8 microns, the primary coating having in situ modulus Eof 0.35 MPa or less and a spring constant &#x3c7;&#x3c;1.6 MPa, where &#x3c7;=2Er/t; and a secondary coating surrounding said primary coating, the secondary coating having an outer radius r, a thickness t=r&#x2212;r, in situ modulus Eof 1200 MPa or greater, wherein &#x3e;10 microns and r&#x2264;85 microns. The fiber has a mode field diameter MFD greater than 8.2 microns at 1310 nm; a cutoff wavelength of less than 1310 nm; and a bend loss at a wavelength of 1550 nm, when wrapped around a mandrel having a diameter of 10 mm, of less than 1.0 dB/turn.

The present description provides reduced-diameter multimode optical fibers. The optical fibers include a reduced-diameter glass fiber and/or reduced-thickness coatings. The overall diameter of the optical fibers is less than 210 &#x3bc;m and examples with diameters less than 160 &#x3bc;m are presented. Puncture resistant secondary coatings enable thinning of the secondary coating without compromising protection of the glass fiber. The optical fibers are suitable for data center applications and features high modal bandwidth, low attenuation, low microbending sensitivity, and puncture resistance in a compact form factor.

Growing community of inventors

Painted Post, NY, United States of America

Ruchi Sarda Tandon