Patents by Inventor David W. Peckham
David W. Peckham has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240319461Abstract: Embodiments of the invention include an optical fiber ribbon. The optical fiber ribbon includes a plurality of optical fibers arranged adjacent to one another in a linear array. The optical fiber ribbon also includes a bonding matrix material applied to at least a portion of the outer surface of at least two adjacent optical fibers. The optical fiber ribbon also includes at least one marking applied to the outer surface of at least one optical fiber. The at least one marking is applied to the outer surface of at least one optical fiber in a manner that reduces the optical transmission loss of the optical fibers.Type: ApplicationFiled: March 22, 2023Publication date: September 26, 2024Applicant: OFS Fitel, LLCInventors: Eric T Joyce, Kariofilis Konstadinidis, Heng Ly, David W Peckham, Kenji Yokomizo
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Patent number: 12088334Abstract: The systems and methods described herein are directed to techniques for improving battery life performance of end devices in resource monitoring systems which transmit data using low-power, wide area network (LPWAN) technologies. Further, the techniques include providing sensor interfaces in the end devices configured to communicate with multiple types of metrology sensors. Additionally, the systems and methods include techniques for reducing the size of a concentrator of a gateway device which receives resource measurement data from end devices. The reduced size of the concentrator results in smaller, more compact gateway devices that consume less energy and reduce heat dissipation experienced in gateway devices. The concentrator may comply with modular interface standards, and include two radios configured for transmitting 1-watt signals.Type: GrantFiled: February 24, 2023Date of Patent: September 10, 2024Assignee: HydroPoint Data Systems Inc.Inventors: Matthew W. Rose, Frank Burns, Matthew Maher Peterson, Canyon Daniel Peckham, Valentin Siderskiy, David Royce Humphrey, Thomas Remmers
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Publication number: 20230384513Abstract: An optical fiber cable comprises an inner tube with strength members that are located external to, and alongside of, the inner tube. Water-blocking material is also located external to the inner tube. A sheath surrounds the strength members and the water-blocking material. The cable further comprises an optical fiber with a core, a trench surrounding the core, a cladding surrounding the trench, and a coating applied over the cladding. The cable comprises a fiber arrangement with N optical fibers (with N being an integer (e.g., 16, 32, 48, 96, etc.), of which at least one optical fiber has: a maximum effective area (Aeff) of approximately seventy-five square micrometers (˜75 ?m2) at a wavelength (?) of approximately 1550 nanometers (˜1550 nm); a maximum mode field diameter (MFD) of ˜8.8 ?m at ? of ˜1550 nm; a maximum cable cut-off ? of ˜1520 nm; and, a maximum attenuation of ˜0.180 decibels-per-kilometer (dB/km) at ? of ˜1550 nm.Type: ApplicationFiled: October 18, 2021Publication date: November 30, 2023Applicant: OFS Fitel, LLCInventors: David W Peckham, Durgesh Vaidya, Peter A Weimann
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Patent number: 11161767Abstract: An optical preform manufacturing process is disclosed in which an alkali dopant is deposited between an optical fiber core rod and an optical fiber cladding jacket. Depositing the alkali dopant between the core rod and the cladding jacket permits diffusion of the alkali dopants into the core during fiber draw when the core and the cladding are at their respective transition (or vitrification) temperatures. Introduction of the alkali dopants between the core rod and the cladding jacket also permits decoupling of the alkali doping process from one or more of other optical preform manufacturing processes. The optical preform manufacturing process can also include placing alkali dopants between an optical fiber inner cladding jacket and an optical fiber outer cladding jacket to reduce the glass viscosity during fiber draw.Type: GrantFiled: January 7, 2019Date of Patent: November 2, 2021Assignee: OFS FITEL, LLCInventors: David W. Peckham, Patrick W. Wisk, Man F. Yan
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Publication number: 20200024176Abstract: An optical preform manufacturing process is disclosed in which an alkali dopant is deposited between an optical fiber core rod and an optical fiber cladding jacket. Depositing the alkali dopant between the core rod and the cladding jacket permits diffusion of the alkali dopants into the core during fiber draw when the core and the cladding are at their respective transition (or vitrification) temperatures. Introduction of the alkali dopants between the core rod and the cladding jacket also permits decoupling of the alkali doping process from one or more of other optical preform manufacturing processes. The optical preform manufacturing process can also include placing alkali dopants between an optical fiber inner cladding jacket and an optical fiber outer cladding jacket to reduce the glass viscosity during fiber draw.Type: ApplicationFiled: January 7, 2019Publication date: January 23, 2020Applicant: OFS Fitel, LLCInventors: David W. Peckham, Patrick W. Wisk, Man F. Yan
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Patent number: 10451795Abstract: A optical fiber having core and cladding regions, a primary coating, and a secondary coating may be defined in part by a curve relating the microbend sensitivity to a ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating (as plotted on respective y and x axes). The curve has a substantially peaked shape defined by a positive-slope region and a negative-slope region. The ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating is within the positive-slope region.Type: GrantFiled: November 7, 2018Date of Patent: October 22, 2019Assignee: OFS FITEL, LLCInventors: Kariofilis Konstadinidis, David W Peckham, Debra A Simoff
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Publication number: 20190146150Abstract: A optical fiber having core and cladding regions, a primary coating, and a secondary coating may be defined in part by a curve relating the microbend sensitivity to a ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating (as plotted on respective y and x axes). The curve has a substantially peaked shape defined by a positive-slope region and a negative-slope region. The ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating is within the positive-slope region.Type: ApplicationFiled: November 7, 2018Publication date: May 16, 2019Applicant: OFS Fitel, LLCInventors: Kariofilis Konstadinidis, David W Peckham, Debra A Simoff
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Patent number: 10259742Abstract: An optical fiber has a core region that is doped with one or more viscosity-reducing dopants in respective amounts that are configured, such that, in a Raman spectrum with a frequency shift of approximately 600 cm?1, the fiber has a nanoscale structure having an integrated D2 line defect intensity of less than 0.025. Alternatively, the core region is doped with one or more viscosity-reducing dopants in respective amounts that are configured such that the fiber has a residual axial compressive stress with a stress magnitude of more than 20 MPa and a stress radial extent between 2 and 7 times the core radius. According to another aspect of the invention a majority of the optical propagation through the fiber is supported by an identified group of fiber regions comprising the core region and one or more adjacent cladding regions.Type: GrantFiled: February 2, 2018Date of Patent: April 16, 2019Assignee: OFS FITEL, LLCInventors: Man F. Yan, Peter I. Borel, Tommy Geisler, Rasmus V. S. Jensen, Ole A. Levring, Jorgen Ostgaard Olsen, David W. Peckham, Dennis J. Trevor, Patrick W. Wisk, Benyuan Zhu
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Patent number: 10197728Abstract: The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. By including this annular stress accommodation region, the cladding layer can be formed to include the relatively high concentration of fluorine required to provide the desired degree of optical signal confinement (i.e., forming a “low loss” optical fiber). The inclusion of the annular stress accommodation region allows for the formation of a large effective area optical fiber that exhibits low loss (i.e., <0.19 dB/km) in both the C-band and L-band transmission ranges.Type: GrantFiled: November 12, 2015Date of Patent: February 5, 2019Assignee: OFS FITEL, LLCInventors: Peter I Borel, Rasmus V. S. Jensen, Ole A Levring, Jorgen Ostgaard Olsen, David W Peckham, Dennis J Trevor, Patrick W Wisk, Man F Yan
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Publication number: 20180251397Abstract: An optical fiber has a core region that is doped with one or more viscosity-reducing dopants in respective amounts that are configured, such that, in a Raman spectrum with a frequency shift of approximately 600 cm?1, the fiber has a nanoscale structure having an integrated D2 line defect intensity of less than 0.025. Alternatively, the core region is doped with one or more viscosity-reducing dopants in respective amounts that are configured such that the fiber has a residual axial compressive stress with a stress magnitude of more than 20 MPa and a stress radial extent between 2 and 7 times the core radius. According to another aspect of the invention a majority of the optical propagation through the fiber is supported by an identified group of fiber regions comprising the core region and one or more adjacent cladding regions.Type: ApplicationFiled: February 2, 2018Publication date: September 6, 2018Applicant: OFS Fitel, LLCInventors: Man F. Yan, Peter I. Borel, Tommy Geisler, Rasmus V.S Jensen, Ole A. Levring, Jorgen Ostgaard Olsen, David W. Peckham, Dennis J. Trevor, Patrick W. Wisk, Benyuan Zhu
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Patent number: 9919955Abstract: An optical fiber has a core region that is doped with one or more viscosity-reducing dopants in respective amounts that are configured, such that, in a Raman spectrum with a frequency shift of approximately 600 cm?1, the fiber has a nanoscale structure having an integrated D2 line defect intensity of less than 0.025. Alternatively, the core region is doped with one or more viscosity-reducing dopants in respective amounts that are configured such that the fiber has a residual axial compressive stress with a stress magnitude of more than 20 MPa and a stress radial extent between 2 and 7 times the core radius. According to another aspect of the invention a majority of the optical propagation through the fiber is supported by an identified group of fiber regions comprising the core region and one or more adjacent cladding regions.Type: GrantFiled: March 31, 2016Date of Patent: March 20, 2018Assignee: OFS FITEL, LLCInventors: Man F Yan, Peter I Borel, Tommy Geisler, Rasmus V Jensen, Ole A Levring, Jorgen Ostgaard Olsen, David W Peckham, Dennis J Trevor, Patrick W Wisk, Benyuan Zhu
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Patent number: 9709731Abstract: A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 or more LP modes for transmission of a spatially-multiplexed optical signal. Undesired modes have respective effective indices that are close to, or less than, the cladding index so as to result in leakage of the undesired modes into the outer cladding. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.Type: GrantFiled: December 18, 2014Date of Patent: July 18, 2017Assignee: OFS FITEL, LLCInventors: Lars Gruner-Nielsen, Robert L. Lingle, David W. Peckham, Yi Sun
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Patent number: 9658395Abstract: The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. By including this annular stress accommodation region, the cladding layer can be formed to include the relatively high concentration of fluorine required to provide the desired degree of optical signal confinement (i.e., forming a “low loss” optical fiber).Type: GrantFiled: August 13, 2015Date of Patent: May 23, 2017Assignee: OFS FITEL, LLCInventors: Peter I Borel, Rasmus V. S. Jensen, Ole A Levring, Jorgen Ostgaard Olsen, David W Peckham, Dennis J Trevor, Patrick W Wisk, Man F Yan
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Publication number: 20170022094Abstract: An optical fiber has a core region that is doped with one or more viscosity-reducing dopants in respective amounts that are configured, such that, in a Raman spectrum with a frequency shift of approximately 600 cm?, the fiber has a nanoscale structure having an integrated D2 line defect intensity of less than 0.025. Alternatively, the core region is doped with one or more viscosity-reducing dopants in respective amounts that are configured such that the fiber has a residual axial compressive stress with a stress magnitude of more than 20 MPa and a stress radial extent between 2 and 7 times the core radius. According to another aspect of the invention a majority of the optical propagation through the fiber is supported by an identified group of fiber regions comprising the core region and one or more adjacent cladding regions.Type: ApplicationFiled: March 31, 2016Publication date: January 26, 2017Applicant: OFS Fitel, LLCInventors: Man F. Yan, Peter I. Borel, Tommy Geisler, Rasmus V. Jensen, Ole A. Levring, Jorgen Ostgaard Olsen, David W. Peckham, Dennis J. Trevor, Patrick W. Wisk, Benyuan Zhu
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Publication number: 20160170137Abstract: The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. By including this annular stress accommodation region, the cladding layer can be formed to include the relatively high concentration of fluorine required to provide the desired degree of optical signal confinement (i.e., forming a “low loss” optical fiber). The inclusion of the annular stress accommodation region allows for the formation of a large effective area optical fiber that exhibits low loss (i.e., <0.19 dB/km) in both the C-band and L-band transmission ranges.Type: ApplicationFiled: November 12, 2015Publication date: June 16, 2016Inventors: Peter I. Borel, Rasmus V.S. Jensen, Ole A. Levring, Jorgen Ostgaard Olsen, David W. Peckham, Dennis J. Trevor, Patrick W. Wisk, Man F. Yan
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Publication number: 20160109651Abstract: The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. By including this annular stress accommodation region, the cladding layer can be formed to include the relatively high concentration of fluorine required to provide the desired degree of optical signal confinement (Le., forming a “low loss” optical fiber).Type: ApplicationFiled: August 13, 2015Publication date: April 21, 2016Inventors: Peter I. Borel, Rasmus V.S. Jensen, Ole A. Levring, Jorgen Ostgaard Olsen, David W. Peckham, Dennis J. Trevor, Patrick W. Wisk, Man F. Yan
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Patent number: 9250383Abstract: A few-mode optical fiber comprises a core surrounded by a cladding, having a step index profile that is structured to support propagation of a plurality of desired signal-carrying modes, while suppressing undesired modes. The core and cladding are configured such that the undesired modes have respective effective indices that are close to, or less than, the cladding index such that the undesired modes are leaky modes. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.Type: GrantFiled: February 24, 2012Date of Patent: February 2, 2016Assignee: OFS FITEL, LLCInventors: Lars Gruner-Nielsen, Robert L. Lingle, Alan McCurdy, David W. Peckham, Torger Tokle
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Patent number: 9116279Abstract: Certain embodiments of the invention may include optimized trench-assisted ultra large area (ULA) optical fibers. According to an example embodiment of the invention, a trench-assisted optical fiber, optimized for microbend frontier (MBF) performance is provided. The optical fiber includes a core region having a longitudinal axis, a shelf region surrounding said core region, a cladding region surrounding said shelf region, said core and shelf and cladding regions configured to support and guide the propagation of signal light in a fundamental transverse mode in said core and shelf regions in the direction of said axis. The optical fiber further includes a core effective area (Aeff) of between 135 ?m2 and about 170 ?m2; a relative effective index difference (Neff) of greater than about 0.08%; a loss at 1550 nm of less than 0.180 dB/km; and a microbend frontier (MBF) distance of less than about 90%.Type: GrantFiled: February 24, 2014Date of Patent: August 25, 2015Inventors: Robert L Lingle, Jr., David W Peckham
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Publication number: 20150168643Abstract: A few-mode fiber is described, having a graded-index core and a surrounding cladding comprising a ledge between the core and the trench, a down-doped trench abutting the ledge, and an undoped cladding region abutting the trench. The fiber's refractive index profile is configured to support 9 or more LP modes for transmission of a spatially-multiplexed optical signal. Undesired modes have respective effective indices that are close to, or less than, the cladding index so as to result in leakage of the undesired modes into the outer cladding. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.Type: ApplicationFiled: December 18, 2014Publication date: June 18, 2015Inventors: Lars Gruner-Nielsen, Robert L. Lingle, David W. Peckham, Yi Sun
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Patent number: 8948559Abstract: The specification describes modified step index and GRaded INdex (GRIN) fibers with low core relative delta (near 0.8%) which have desirable properties for transmission. These lower delta fibers have lower attenuation losses due to reduced Rayleigh scattering, which is desirable to improve performance in multiple mode multiplexing. The fiber designs include optimized raised triangle profiles, and depressed cladding profiles, to support two and four LP modes.Type: GrantFiled: March 15, 2013Date of Patent: February 3, 2015Assignee: OFS Fitel, LLCInventors: Lars Gruner-Nielsen, Robert L. Lingle, David W Peckham, Yi Sun