Corning Incorporated

Corning Optical Communications LLC

Northern Telecom Limited

Corning Research & Development Corporation

Avanex Corporation

Kevin Wallace Bennett

Pushkar Tandon

Scott Robertson Bickham

Ming-Jun Li

Ruchi Sarda Tandon

Stephan Lvovich Logunov

Douglas Llewellyn Butler

Seldon David Benjamin

Anthony Sebastian Bauco

Dana Craig Bookbinder

William Carl Hurley

Dmitri Vladislavovich Kuksenkov

Bin Yang

Peter Gerard Wigley

Jeffery Alan DeMeritt

Aramais Robert Zakharian

Joohyun Koh

Horst Schreiber

Paul Anthony Jakobson

William Spencer Klubben, Iii

Jason S Watts

Kenneth R Lane

Andrey Evgenievich Korolev

Bryan William Wakefield

Vladimir Nikolaevich Nazarov

Richard G Smart

Snigdharaj Kumar Mishra

Xin Chen

Anping Liu

Alan Frank Evans

Edward John Fewkes

Robert Adam Modavis

Michael John Yadlowsky

Andrey V Filippov

Kim Byron Roberts

Eric John Mozdy

Shenping Li

Andy Fenglei Zhou

Mark A Newhouse

Eric Raymond Logan

Manuela Ocampo

Robert William Keys

Todd Marshall Wetherill

Richard A Habel

Samuel Don Navé

Joseph Edward McCarthy

Jason Edward Hurley

Nigel Edward Jolley

Valery A Kozlov

Gregory Blake Bohler

Ximao Feng

Paul Oakley Johnson

Shudong Xiao

Peter Joseph Ronco

Roger A Rose

Robert Arnold Knowlton

Wen-Lung Kuang

Vineet Tyagi

Ming Jun Li

Jeffrey Coon

Fiona Davis

Jody Paul Markley

Konstantin Sergeevich Koreshkov

Percil Watkins

James A Derick

Paul C Trifoso

Trista Nicole Hesch

William Spencer Iii Klubben

The present disclosure relates to an optical fiber having a core and a cladding, where the cladding is doped with a dopant. The cladding has a dopant concentration gradient in the radial direction such that a concentration of the dopant changes with respect to radial distance from a core-cladding interface. Doping the cladding of the optical fiber enables ablation of the fiber surface with a line source to provide an ablated wedge or crack such that cleaving can be achieved by applying a stress force to the fiber after ablation or by applying a pull force during ablation.

Laser cleaving and polishing of doped optical fibers

Embodiments of the disclosure relates to a light-diffusing element. The light diffusing element includes a glass core having a first refractive index. The light diffusing element also includes a cladding surrounding the glass core. The cladding includes an inner cladding surface and an outer cladding surface. The inner cladding surface and the outer cladding surface define a cladding thickness of from 5 μm to 30 μm. The cladding has a second refractive index that is less than the first refractive index of the glass core. The light diffusing element also includes a coating surrounding the cladding. The coating has an inner coating surface and an outer coating surface. The inner coating surface contacts the outer cladding surface. The outer coating surface defines an outermost surface of the light-diffusing element, and the coating includes first scattering centers.

Long length uniform illumination light diffusing fiber

A multicore optical fiber is provided that includes a first core with silica glass doped with chlorine and/or an alkali metal, a first inner cladding surrounding the first core, and a first outer cladding surrounding the first inner cladding and having a first trench region having a volume of about 30%&#x394;-micronor greater. The multicore optical fiber also includes a second core with silica glass doped with chlorine and/or an alkali metal, a second inner cladding surrounding the second core, and a second outer cladding surrounding the second inner cladding and having a second trench region having a volume of about 30%&#x394;-micronor greater. Additionally, a common cladding surrounds the first core and the second core, and the first core and the second core each have an effective area at 1550 nm of about 100 micronor less.

Reduced diameter optical fiber with improved microbending

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

A multicore optical fiber includes an inner glass region having a plurality of core regions surrounded by a common outer cladding, the inner glass region further having at least one marker and an outer diameter in the range of 120 microns and 130 microns, wherein each core region is comprised of a germania-doped silica core and a fluorine-doped silica trench, wherein the trench volume of the fluorine-doped silica trench is greater than 50% &#x394; microns. The fiber has an outer coating layer surrounding the inner glass region, the outer coating layer having a primary coating layer and a secondary coating layer with a diameter of the secondary coating layer equal to or less than 200 microns, wherein each core region has a mode field diameter greater than 8.2 microns at 1310 nm, a cable cutoff wavelength of less than 1260 nm, and zero dispersion wavelength of less than 1335 nm.

Multicore optical fiber

The optical fibers disclosed is a single mode optical fiber having 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 3.0 microns to 6.0 microns and a core volume Vless than 6.0%-micron. 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 65 microns and comprising silica based glass doped with titania. The disclosed single mode optical fiber can have a fiber cutoff wavelength &#x3bb;less than 1530 nm.

Single mode optical fibers with low cutoff wavelength high mechanical reliability

Multicore optical fibers with low bend loss, low cross-talk, and large mode field diameters In some embodiments a circular multicore optical fiber includes a glass matrix; at least 3 cores arranged within the glass matrix, wherein any two cores have a core center to core center spacing of less than 29 microns; and a plurality of trench layers positioned between a corresponding core and the glass matrix, each trench layer having an outer radius of less than or equal to 14 microns and a trench volume of greater than 50% &#x394; micron; wherein the optical fiber has a mode field diameter of greater than about 8.2 microns at 1310 nm, and wherein the optical fiber has an outer diameter of less than about 130 microns.

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 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.

A system for disinfecting a medical device is provided. The system includes a light source that generates light having at least one wavelength between about 100 nm and about 500 nm. The system further includes at least one cylindrical optical diffuser disposed in optical communication with at least one interior channel of a medical device, the at least one cylindrical optical diffuser having an outer surface and an end optically coupled to the light source. The at least one cylindrical optical diffuser is configured to scatter guided light through the outer surface to form a light diffuser portion having a length that emits substantially uniform radiation over its length.

Medical device disinfecting system and method

A light-diffusing optical fiber that provides a symmetric intensity distribution of forward and backward scattered light is described. The fiber includes a secondary coating that contains scattering centers. Control of the thickness of the secondary coating and concentration of scattering centers provides control over the distribution of scattered intensity. More symmetric distributions of scattered light intensity are realized by increasing the thickness of the secondary coating and/or the concentration of scattering centers in the secondary coating. Representative scattering centers include oxide nanoparticles.

Coating for light-diffusing optical fibers

Growing community of inventors

Hammondsport, NY, United States of America

Kevin Wallace Bennett