Patents by Inventor Raman K. Selli
Raman K. Selli 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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Patent number: 10436984Abstract: An optical network comprises a fiber distribution cable and a terminal assembly. The terminal assembly receives a plurality of optical fibers from the fiber distribution cable and distributes one or more individual fibers to one or more single fiber bare-fiber holders that hold and protect each single fiber prepared and configured for splicing via an individual splicing element. The splicing element includes an alignment mechanism having a base plate and a clamp plate. At least one of the base plate and clamp plate is formed from a silica material and at least one of the base plate and clamp plate includes an alignment groove or channel configured to receive the first and second optical fibers in an end-to-end manner. The splice element also comprises an optical adhesive disposed in at least a portion of the alignment groove, wherein the optical adhesive is curable via actinic radiation.Type: GrantFiled: September 5, 2017Date of Patent: October 8, 2019Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: William J. Clatanoff, Donald K. Larson, Daniel J. Treadwell, William G. Allen, Raman K. Selli, Victor J. Borer, Kathleen M. Humpal, Melissa A. Lackey, Brant U. Kolb, Paul D. Pennington, Mark J. Hendrickson, Wendy L. Thompson, Wayne S. Mahoney
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Publication number: 20180196191Abstract: An article comprises an optical fiber having a first end with a first end surface having a multilayer thin film filter coating deposited thereon, a second end with a second end surface, and a fiber Bragg grating formed within the optical fiber between the first and second ends.Type: ApplicationFiled: July 7, 2016Publication date: July 12, 2018Inventors: Ding Wang, Raman K. Selli
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Publication number: 20180067261Abstract: An optical network comprises a fiber distribution cable and a terminal assembly. The terminal assembly receives a plurality of optical fibers from the fiber distribution cable and distributes one or more individual fibers to one or more single fiber bare-fiber holders that hold and protect each single fiber prepared and configured for splicing via an individual splicing element. The splicing element includes an alignment mechanism having a base plate and a clamp plate. At least one of the base plate and clamp plate is formed from a silica material and at least one of the base plate and clamp plate includes an alignment groove or channel configured to receive the first and second optical fibers in an end-to-end manner. The splice element also comprises an optical adhesive disposed in at least a portion of the alignment groove, wherein the optical adhesive is curable via actinic radiation.Type: ApplicationFiled: September 5, 2017Publication date: March 8, 2018Inventors: William J. Clatanoff, Donald K. Larson, Daniel J. Treadwell, William G. Allen, Raman K. Selli, Victor J. Borer, Kathleen M. Humpal, Melissa A. Lackey, Brant U. Kolb, Paul D. Pennington, Mark J. Hendrickson, Wendy L. Thompson, Wayne S. Mahoney
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Publication number: 20180067262Abstract: A splice element for splicing a first and a second optical fiber comprises an alignment mechanism having a base plate and a clamp plate. At least one of the base plate and clamp plate is formed from a silica material and at least one of the base plate and clamp plate includes an alignment groove configured to receive the first and second optical fibers in an end-to-end manner. The splice element also comprises an optical adhesive disposed in at least a portion of the alignment groove, wherein the optical adhesive is curable via actinic radiation.Type: ApplicationFiled: September 5, 2017Publication date: March 8, 2018Inventors: Donald K. Larson, William J. Clatanoff, Daniel J. Treadwell, William G. Allen, Raman K. Selli, Kathleen M. Humpal, Melissa A. Lackey, Brant U. Kolb, Paul D. Pennington, Mark J. Hendrickson, Wendy L. Thompson, Wayne S. Mahoney
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Patent number: 9846288Abstract: A fiber optic device includes a support having one or more optical fibers coupled to the support and a base that includes one or more optoelectronic devices. The support is coupled to the base such that one or more of the optoelectronic devices are optically coupled to one or more of the optical fibers. A portion of the one or more optical fibers that is in contact with the support may be bent and one or more of the optoelectronic devices may be optically coupled to the bent portion of one or more of the optical fibers.Type: GrantFiled: September 1, 2015Date of Patent: December 19, 2017Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Raman K. Selli, Brian M. Cole, Donald G. Doss
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Publication number: 20150370022Abstract: A fiber optic device includes a support having one or more optical fibers coupled to the support and a base that includes one or more optoelectronic devices. The support is coupled to the base such that one or more of the optoelectronic devices are optically coupled to one or more of the optical fibers. A portion of the one or more optical fibers that is in contact with the support may be bent and one or more of the optoelectronic devices may be optically coupled to the bent portion of one or more of the optical fibers.Type: ApplicationFiled: September 1, 2015Publication date: December 24, 2015Inventors: Raman K. Selli, Brian M. Cole, Donald G. Doss
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Patent number: 9151913Abstract: A method of forming a fiber optic device includes securing one or more optical fibers to a support. The support is coupled to a base that includes one or more optoelectronic devices. After one or more of the fibers are secured to the support, and the support is secured to the base, one or more of the fibers are cleaved. A portion of the one or more optical fibers that is in contact with the support may be bent. This method, and fiber optic devices made using this method are more easily aligned and may be produced at lower costs than existing manufacturing processes.Type: GrantFiled: January 23, 2015Date of Patent: October 6, 2015Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Raman K. Selli, Brian M. Cole, Donald G. Doss
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Publication number: 20150131948Abstract: A method of forming a fiber optic device includes securing one or more optical fibers to a support. The support is coupled to a base that includes one or more optoelectronic devices. After one or more of the fibers are secured to the support, and the support is secured to the base, one or more of the fibers are cleaved. A portion of the one or more optical fibers that is in contact with the support may be bent. This method, and fiber optic devices made using this method are more easily aligned and may be produced at lower costs than existing manufacturing processes.Type: ApplicationFiled: January 23, 2015Publication date: May 14, 2015Inventors: Raman K. Selli, Brian M. Cole, Donald G. Doss
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Patent number: 8989539Abstract: A method of forming a fiber optic device includes securing one or more optical fibers to a support. The support is coupled to a base that includes one or more optoelectronic devices. After one or more of the fibers are secured to the support, and the support is secured to the base, one or more of the fibers are cleaved. This method, and fiber optic devices made using this method are more easily aligned and may be produced at lower costs than existing manufacturing processes.Type: GrantFiled: October 29, 2010Date of Patent: March 24, 2015Assignee: 3M Innovative Properties CompanyInventors: Raman K. Selli, Brian M. Cole, Donald G. Doss
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Publication number: 20120213475Abstract: A method of forming a fiber optic device includes securing one or more optical fibers to a support. The support is coupled to a base that includes one or more optoelectronic devices. After one or more of the fibers are secured to the support, and the support is secured to the base, one or more of the fibers are cleaved. This method, and fiber optic devices made using this method are more easily aligned and may be produced at lower costs than existing manufacturing processes.Type: ApplicationFiled: October 29, 2010Publication date: August 23, 2012Inventors: Raman K. Selli, Brian M. Cole, Donald G. Doss
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Patent number: 6086263Abstract: A receptacle for terminating an optical fiber at an active device such as a photodetector or solid-state light source. The receptacle includes a housing, a termination fixture and an active device. The housing has an opening for receiving the terminal portion of an optical fiber, a door located at the opening, biased to a closed position and having a latch for releasably receiving an optical fiber plug, and a removable plate allowing access to an interior of the housing. The termination fixture and the active device may be mounted to a common substrate attached to an interior portion of the housing. The termination fixture includes a base and a projection attached to the base proximate a light-transmitting portion thereof, the projection having a fiber-receiving groove directed toward a fiber stop surface located on the light-transmitting portion of the base. The base can have a lens integrally molded with the light-transmitting portion.Type: GrantFiled: June 13, 1996Date of Patent: July 11, 2000Assignee: 3M Innovative Properties CompanyInventors: Raman K. Selli, Donald G. Doss, George W. Parrett, James K. Guenter, Phillip W. Waltrip
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Patent number: 5458528Abstract: A method of polishing ferrules used in optical fiber connectors centers the apex of the spherical end face of the ferrule on the fiber axis. The invention is directed to ferrules whose ends are angled and generally spherical, providing angled physical contact (APC) between a pair of interconnected fibers. These ferrules commonly have a chamfer from the outermost diameter leading to the spherical, angled end face. In such prior art ferrules, the apex of the spherical end face does not coincide with the fiber axis, leading to a potential gap between the fiber ends, which affects several performance factors, including insertion loss, stability and repeatability. The present invention provides several practical methods for imparting an APC finish to a chamfered ferrule while maintaining the apex of the spherical end face on the fiber axis.Type: GrantFiled: June 28, 1994Date of Patent: October 17, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Edward B. Lurie, Raman K. Selli
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Patent number: 5351327Abstract: A method of polishing ferrules used in optical fiber connectors centers the apex of the spherical end face of the ferrule on the fiber axis. The invention is directed to ferrules whose ends are angled and generally spherical, providing angled physical contact (APC) between a pair of interconnected fibers. These ferrules commonly have a chamfer from the outermost diameter leading to the spherical, angled end face. In such prior art ferrules, the apex of the spherical end face does not coincide with the fiber axis, leading to a potential gap between the fiber ends, which affects several performance factors, including insertion loss, stability and repeatability. The present invention provides several practical methods for imparting an APC finish to a chamfered ferrule while maintaining the apex of the spherical end face on the fiber axis.Type: GrantFiled: June 25, 1993Date of Patent: September 27, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Edward B. Lurie, Raman K. Selli