Patents by Inventor Brian Mangan
Brian Mangan 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: 20230059478Abstract: An amplified hollow-core fiber (HCF) optical transmission system for low latency communications. The optical transmission system comprises a low-latency amplified HCF cable. The low-latency amplified HCF cable comprises multiple HCF segments (or HCF spans). Between consecutive HCF segments, the system comprises low-latency remote optically pumped amplifiers (ROPAs). Each ROPA comprises a gain fiber, a wavelength division multiplexing (WDM) coupler, and an optical isolator. Preferably, the ROPAs are integrated into the HCF cable. Each ROPA is pumped by a remote optical pump source, which provides pump light to the gain fiber. The gain fiber receives an optical transmission signal from the HCF. The WDM coupler combines the pump light with the optical transmission signal, thereby allowing the gain fiber to amplify the optical transmission signal to an amplified transmission signal. The amplified signal is transmitted to another HCF segment through the optical isolator.Type: ApplicationFiled: December 11, 2020Publication date: February 23, 2023Applicant: OFS Fitel, LLCInventors: David J DiGiovanni, Brian Mangan, Benyuan Zhu
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Publication number: 20230014659Abstract: Described herein are systems, methods, and articles of manufacture for reducing coupling loss between optical fibers, more particularly, to reducing coupling loss between a hollow-core optical fiber (HCF) and another fiber, such as solid core fibers (SCF), through the use of mismatched mode field diameter (MFD) and optical connector assemblies for low latency patchcords. According to one embodiment, an article is configured to reduce a coupling loss between multiple optical fibers, wherein the article includes an HCF supporting the propagation of a first mode and an SCF coupled to the HCF. According to a further embodiment, a method is described for reducing the coupling loss or splicing loss between optical fibers, such as an exemplary HCF and a solid core SMF.Type: ApplicationFiled: December 16, 2020Publication date: January 19, 2023Applicant: OFS Fitel, LLCInventors: Matt Corrado, Tristan Kremp, Brian Mangan, Kelvin B. Bradley, Thomas Stafford, Yue Liang, Brian Savran
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Publication number: 20220342146Abstract: Described herein are systems, methods, and articles of manufacture for reducing coupling loss between optical fibers, more particularly, to reducing coupling loss between a hollow-core optical fiber (HCF) and another fiber, such as solid core fibers (SCF), through the use of mismatched mode field diameter (MFD). According to one embodiment, an article is configured to reduce a coupling loss between multiple optical fibers, wherein the article includes an HCF supporting the propagation of a first mode and an SCF coupled to the HCF. According to a further embodiment, a method is described for reducing the coupling loss or splicing loss between optical fibers, such as an exemplary HCF and a solid core SMF. These exemplary methods may include coupling/splicing an exemplary HCF to an exemplary SMF with significantly smaller MFD.Type: ApplicationFiled: August 21, 2020Publication date: October 27, 2022Applicant: OFS Fitel, LLCInventors: Matt Corrado, Brian Mangan, Tristan Kremp
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Publication number: 20220073407Abstract: An apparatus for fabricating a hollow core optical fiber with a controllable core region (in terms of diameter) is based upon regulating conditions (gas flow, volume, and/or temperature) within the hollow core region during the fiber draw process. The introduction of a gas, or any change in volume or temperature of the hollow core region, allows for the diameter of the hollow core region to self-regulate as a multistructured core rod (MCR) is drawn down into the final hollow core optical fiber structure. This self-regulation provides a core region having a diameter that selected and then stabilized for the duration of the draw process. The inventive apparatus is also useful in controlling the diameter of any selected hollow region of an MCR including, but not limited to, shunts and corner capillaries disposed around the core region.Type: ApplicationFiled: November 15, 2021Publication date: March 10, 2022Applicant: OFS Fitel, LLCInventors: Matt Corrado, David J DiGiovanni, Brian Mangan, Gabriel Puc, Robert S Windeler
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Patent number: 11221444Abstract: The selection of starting materials used in the process of forming an MCR is controlled to specifically define the physical properties of the core tube and/or the capillary tubes in the local vicinity of the core tube. The physical properties are considered to include, but are not limited to, the diameter of a given tube/capillary, its wall thickness, and its geometry (e.g., circular, non-circular). A goal is to select starting materials with physical properties that yield a final hollow core optical fiber with a “uniform” core region (for the purposes of the present invention, a “uniform” core region is one where the struts of cladding periodic array surrounding the central core are uniform in length and thickness (with the nodes between the struts thus being uniformly spaced apart), which yields a core wall of essentially uniform thickness and circularity.Type: GrantFiled: April 3, 2019Date of Patent: January 11, 2022Assignee: OFS FITEL, LLCInventors: Brian Mangan, Gabriel Puc, Matt Corrado, Tristan Kremo
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Patent number: 11203547Abstract: A technique for fabricating a hollow core optical fiber with a controllable core region (in terms of diameter) is based upon regulating conditions (gas flow, volume, and/or temperature) within the hollow core region during the fiber draw process. The introduction of a gas, or any change in volume or temperature of the hollow core region, allows for the diameter of the hollow core region to self-regulate as a multistructured core rod (MCR) is drawn down into the final hollow core optical fiber structure. This self-regulation provides a core region having a diameter that selected and then stabilized for the duration of the draw process. The inventive process is also useful in controlling the diameter of any selected hollow region of an MCR including, but not limited to, shunts and corner capillaries disposed around the core region.Type: GrantFiled: July 23, 2018Date of Patent: December 21, 2021Assignee: OFS FITEL, LLCInventors: Matt Corrado, David J DiGiovanni, Brian Mangan, Gabriel Puc, Robert S Windeler
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Patent number: 11156768Abstract: A hollow core optical fiber and cable combination is configured to exhibit minimal SNR and loss degradation. This is achieved by either: (1) reducing the coupling between the fundamental and other (unwanted) modes propagating within the hollow core fiber; or (2) increasing the propagation loss along the alternative. The first approach may be achieved by designing the cable to minimize perturbations and/or designing the hollow core fiber to fully separate the fundamental mode from the unwanted modes so as to reduce coupling into the unwanted modes. Whether through fiber design or cable design, the amount of light coupled into unwanted modes is reduced to acceptable levels. The second approach may be realized through either fiber design and/or cable design to suppress the light in unwanted modes so that an acceptably low level of light is coupled back into the fundamental mode.Type: GrantFiled: May 18, 2020Date of Patent: October 26, 2021Assignee: CFS FITEL, LLCInventors: David J DiGiovanni, Daryl Inniss, Brian Mangan, Vitaly Mikhailov, John E. Pacini, Tristan Kremp
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Patent number: 11079536Abstract: A hollow core fiber (HCF) has a cross section with a substantially-circular hollow core in a cladding lattice, an axial center and a reference direction that extends radially in one direction from the axial center. The HCF comprises modified holes that are located along linear paths that extend radially outward from the axial center. The modified holes, which are located at various radial distances from the axial center and at various azimuthal angles from the reference direction, have non-uniform modified properties. These non-uniform modified properties include radially-varying properties, azimuthally-varying properties, or a combination of radially-varying and azimuthally-varying properties.Type: GrantFiled: April 24, 2020Date of Patent: August 3, 2021Assignee: OFS FITEL, LLCInventors: Tristan Kremp, Brian Mangan, Robert S. Windeler
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Publication number: 20200319399Abstract: The selection of starting materials used in the process of forming an MCR is controlled to specifically define the physical properties of the core tube and/or the capillary tubes in the local vicinity of the core tube. The physical properties are considered to include, but are not limited to, the diameter of a given tube/capillary, its wall thickness, and its geometry (e.g., circular, non-circular). A goal is to select starting materials with physical properties that yield a final hollow core optical fiber with a “uniform” core region (for the purposes of the present invention, a “uniform” core region is one where the struts of cladding periodic array surrounding the central core are uniform in length and thickness (with the nodes between the struts thus being uniformly spaced apart), which yields a core wall of essentially uniform thickness and circularity.Type: ApplicationFiled: April 3, 2019Publication date: October 8, 2020Applicant: OFS Fitel, LLCInventor: Brian Mangan
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Publication number: 20200292751Abstract: A hollow core optical fiber and cable combination is configured to exhibit minimal SNR and loss degradation. This is achieved by either: (1) reducing the coupling between the fundamental and other (unwanted) modes propagating within the hollow core fiber; or (2) increasing the propagation loss along the alternative. The first approach may be achieved by designing the cable to minimize perturbations and/or designing the hollow core fiber to fully separate the fundamental mode from the unwanted modes so as to reduce coupling into the unwanted modes. Whether through fiber design or cable design, the amount of light coupled into unwanted modes is reduced to acceptable levels. The second approach may be realized through either fiber design and/or cable design to suppress the light in unwanted modes so that an acceptably low level of light is coupled back into the fundamental mode.Type: ApplicationFiled: May 18, 2020Publication date: September 17, 2020Applicant: OFS FITEL, LLCInventors: David J. DiGiovanni, Daryl Inniss, Brian Mangan, Vitaly Mikhailov, John E. Pacini, Tristan Kremp
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Publication number: 20200257042Abstract: A hollow core fiber (HCF) has a cross section with a substantially-circular hollow core in a cladding lattice, an axial center and a reference direction that extends radially in one direction from the axial center. The HCF comprises modified holes that are located along linear paths that extend radially outward from the axial center. The modified holes, which are located at various radial distances from the axial center and at various azimuthal angles from the reference direction, have non-uniform modified properties. These non-uniform modified properties include radially-varying properties, azimuthally-varying properties, or a combination of radially-varying and azimuthally-varying properties.Type: ApplicationFiled: April 24, 2020Publication date: August 13, 2020Applicant: OFS FITEL, LLCInventors: Tristan Kremp, Brian Mangan, Robert S. Windeler
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Patent number: 10698154Abstract: A hollow core fiber (HCF) has a cross section with a substantially-circular hollow core in a cladding lattice, an axial center and a reference direction that extends radially in one direction from the axial center. The HCF comprises modified holes that are located along linear paths that extend radially outward from the axial center. The modified holes, which are located at various radial distances from the axial center and at various azimuthal angles from the reference direction, have non-uniform modified properties. These non-uniform modified properties include radially-varying properties, azimuthally-varying properties, or a combination of radially-varying and azimuthally-varying properties.Type: GrantFiled: October 9, 2018Date of Patent: June 30, 2020Assignee: OFS FITEL, LLCInventors: Tristan Kremp, Brian Mangan, Robert S Windeler
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Patent number: 10684411Abstract: A hollow core optical fiber and cable combination is configured to exhibit minimal SNR and loss degradation. This is achieved by either: (1) reducing the coupling between the fundamental and other (unwanted) modes propagating within the hollow core fiber, or (2) increasing the propagation loss along the alternative. The first approach may be achieved by designing the cable to minimize perturbations and/or designing the hollow core fiber to fully separate the fundamental mode from the unwanted modes so as to reduce coupling into the unwanted modes. Whether through fiber design or cable design, the amount of light coupled into unwanted modes is reduced to acceptable levels. The second approach may be realized through either fiber design and/or cable design to suppress the light in unwanted modes so that an acceptably low level of light is coupled back into the fundamental mode.Type: GrantFiled: April 5, 2018Date of Patent: June 16, 2020Assignee: OFS FITEL, LLCInventors: David J DiGiovanni, Daryl Inniss, Brian Mangan, Vitaly Mikhailov, John E Pacini, Tristan Kremp
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Publication number: 20200079680Abstract: A process of fabricating the microstructure core rod preform used in the fabrication of a hollow core optical fiber includes the step of applying external pressure to selected hollow regions during the drawing of the preform from the initial assembly of capillary tubes. The application of pressure assists the selected hollow regions in maintaining their shape as much as possible during draw, and reduces distortions in the microstructure cells in close proximity to the core by controlling glass distribution during MCR draw.Type: ApplicationFiled: September 12, 2018Publication date: March 12, 2020Applicant: OFS Fitel, LLCInventors: Matt Corrado, David J DiGiovanni, Brian Mangan, Gabriel Puc, Robert S Windeler, Tristan Kremp
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Publication number: 20200024178Abstract: A technique for fabricating a hollow core optical fiber with a controllable core region (in terms of diameter) is based upon regulating conditions (gas flow, volume, and/or temperature) within the hollow core region during the fiber draw process. The introduction of a gas, or any change in volume or temperature of the hollow core region, allows for the diameter of the hollow core region to self-regulate as a multistructured core rod (MCR) is drawn down into the final hollow core optical fiber structure. This self-regulation provides a core region having a diameter that selected and then stabilized for the duration of the draw process. The inventive process is also useful in controlling the diameter of any selected hollow region of an MCR including, but not limited to, shunts and corner capillaries disposed around the core region.Type: ApplicationFiled: July 23, 2018Publication date: January 23, 2020Applicant: OFS Fitel, LLCInventors: Matt Corrado, David J. DiGiovanni, Brian Mangan, Gabriel Puc, Robert S Windeler
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Publication number: 20200025999Abstract: A hollow core optical fiber and cable combination is configured to exhibit minimal SNR and loss degradation. This is achieved by either: (1) reducing the coupling between the fundamental and other (unwanted) modes propagating within the hollow core fiber, or (2) increasing the propagation loss along the alternative. The first approach may be achieved by designing the cable to minimize perturbations and/or designing the hollow core fiber to fully separate the fundamental mode from the unwanted modes so as to reduce coupling into the unwanted modes. Whether through fiber design or cable design, the amount of light coupled into unwanted modes is reduced to acceptable levels. The second approach may be realized through either fiber design and/or cable design to suppress the light in unwanted modes so that an acceptably low level of light is coupled back into the fundamental mode.Type: ApplicationFiled: April 9, 2018Publication date: January 23, 2020Applicant: OFS Fitel, LLCInventors: David J DiGiovanni, Daryl Inniss, Brian Mangan, Vitaly Mikhailov
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Publication number: 20190107670Abstract: A hollow core fiber (HCF) has a cross section with a substantially-circular hollow core in a cladding lattice, an axial center and a reference direction that extends radially in one direction from the axial center. The HCF comprises modified holes that are located along linear paths that extend radially outward from the axial center. The modified holes, which are located at various radial distances from the axial center and at various azimuthal angles from the reference direction, have non-uniform modified properties. These non-uniform modified properties include radially-varying properties, azimuthally-varying properties, or a combination of radially-varying and azimuthally-varying properties.Type: ApplicationFiled: October 9, 2018Publication date: April 11, 2019Applicant: OFS Fitel, LLCInventors: Tristan Kremp, Brian Mangan, Robert S. Windeler
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Publication number: 20060088260Abstract: Novel preforms and methods of making novel preforms are described. The preforms are suitable for being drawn into photonic bandgap optical fibres. In one form, the preform comprises a stack of elongate members having, in transverse cross section, a triangular close-packed arrangement of circular cross section capillaries, which define interstitial regions containing solid rods. The stack is supported around a relatively large capillary, which defines an inner region of the stack. The stack may be adapted by varying the number of rods in any given interstitial region, in order to generate various different configurations of cladding structure, which can be made into optical fibres having surprising operational characteristics, such as a split gap.Type: ApplicationFiled: December 22, 2003Publication date: April 27, 2006Inventors: David Williams, Brian Mangan, Philip Russell
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Publication number: 20050238301Abstract: A method of manufacturing a microstructured fibre, comprises: providing a preform comprising a plurality of elongate holes; mating at least one, but not all, of the holes with a connector to connect the hole(s) to an external pressure-controller; drawing the preform into the fibre whilst controlling gas pressure in the hole(s) connected to the pressure-controller. The connector is also claimed.Type: ApplicationFiled: March 20, 2003Publication date: October 27, 2005Inventors: Philip Russell, Brian Mangan, Jonathan Knight, Ian Kilbride, Timothy Birks
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Publication number: 20050232560Abstract: An optical fibre comprises: (i) a plurality of elongate, tubular, higher-refractive-index regions (20,50) of dielectric material, the regions being concentric about a longitudinal axis; (ii) a plurality of elongate, tubular lower-refractive-index regions, arranged between the higher-index regions (20,50), and comprising bridging regions (30), of a solid dielectric material, and a plurality of elongate holes (40); and (iii) a core region (10). The higher-index regions (20,50) and the lower-index regions (40) together define a cladding structure arranged to guide light in the core region (10). The elongate holes (40) are arcuate in cross-section.Type: ApplicationFiled: December 5, 2002Publication date: October 20, 2005Applicant: BLAZEPHOTONICS LIMITEDInventors: Jonathan Cave Knight, Philip Russell, Timothy Birks, Brian Mangan