Patents by Inventor Aseema Mohanty
Aseema Mohanty 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: 20230288774Abstract: Methods, systems, and devices for light emission are disclosed. An example device may comprise an optical source configured to output light, a waveguide optically coupled to the optical source and configured to carry the light, and a feedback portion configured to reflect the light back to the optical source via the waveguide. The feedback portion may comprise a microresonator optically coupled to the waveguide. The device may comprise one or more tuning elements configured to tune one or more of the microresonator or the waveguide to cause constructive interference between the reflected light and light of the optical source, resulting in optical emission of both the reflected light and the light of the optical source from an end of the waveguide.Type: ApplicationFiled: November 3, 2022Publication date: September 14, 2023Inventors: Mateus Corato Zanarella, Andres Gil Molina, Xingchen Ji, Min Chul Shin, Aseema Mohanty, Michal Lipson
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Patent number: 11662643Abstract: Methods and systems are described for adjusting an optical signal. An example device can comprise a plurality of waveguides. The device can comprise an interference structure optically coupled to the plurality of waveguides and configured to receive an optical signal and distribute the optical signal to the plurality of waveguides as a plurality of optical signals. The device can comprise a plurality of phase shifters coupled to corresponding waveguides of the plurality of waveguides and configured to adjust the phase of one or more of the plurality of optical signals. The device can comprise a plurality of emitters optically coupled to corresponding outputs of the plurality of phase shifters and configured to output the adjusted plurality of optical signals. The adjusted plurality of optical signals can be output as light patterns reconfigurable in at least one dimension.Type: GrantFiled: May 11, 2020Date of Patent: May 30, 2023Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Min Chul Shin, Aseema Mohanty, Kyle Watson
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Patent number: 11385410Abstract: A millimeter scale weak grating coupler comprising a silicon waveguide having bars of overlay material of length (a) disposed periodically at a period (?) adjacent the silicon waveguide whereby a uniform grating output is achieved.Type: GrantFiled: June 26, 2018Date of Patent: July 12, 2022Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Aseema Mohanty, Christopher T. Phare, Moshe Zadka, Samantha P. Roberts, You-Chia Chang
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Patent number: 11073659Abstract: A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45° angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.Type: GrantFiled: May 13, 2020Date of Patent: July 27, 2021Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Mohammad Amin Tadayon, Aseema Mohanty, Felippe Barbosa
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Patent number: 10962720Abstract: An optical apparatus for coupling an optical fiber to a waveguide is disclosed. The optical apparatus can comprise a funnel coupler having an orifice configured to receive an optical fiber. The funnel coupler can mechanically support the optical fiber when received in the orifice. The funnel coupler can guide the optical fiber to a coupling end of the funnel coupler and a waveguide disposed adjacent the coupling end of the funnel coupler. One or more of the funnel coupler or the waveguide can be configured to optically couple the optical fiber and the waveguide when the optical fiber is received in the orifice.Type: GrantFiled: July 17, 2019Date of Patent: March 30, 2021Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Oscar Adrian Jimenez Gordillo, Aseema Mohanty
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Publication number: 20210026071Abstract: A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45° angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.Type: ApplicationFiled: May 13, 2020Publication date: January 28, 2021Inventors: Michal Lipson, Mohammad Amin Tadayon, Aseema Mohanty, Felippe Barbosa
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Publication number: 20200355983Abstract: Methods and systems are described for adjusting an optical signal. An example device can comprise a plurality of waveguides. The device can comprise an interference structure optically coupled to the plurality of waveguides and configured to receive an optical signal and distribute the optical signal to the plurality of waveguides as a plurality of optical signals. The device can comprise a plurality of phase shifters coupled to corresponding waveguides of the plurality of waveguides and configured to adjust the phase of one or more of the plurality of optical signals. The device can comprise a plurality of emitters optically coupled to corresponding outputs of the plurality of phase shifters and configured to output the adjusted plurality of optical signals. The adjusted plurality of optical signals can be output as light patterns reconfigurable in at least one dimension.Type: ApplicationFiled: May 11, 2020Publication date: November 12, 2020Inventors: Michal Lipson, Min Chul Shin, Aseema Mohanty, Kyle Watson
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Patent number: 10690849Abstract: A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45° angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.Type: GrantFiled: June 6, 2017Date of Patent: June 23, 2020Assignee: The Trustees of Columbia University in the City of New YorkInventors: Michal Lipson, Mohammad Amin Tadayon, Aseema Mohanty, Felippe Barbosa
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Publication number: 20200158956Abstract: A millimeter scale weak grating coupler comprising a silicon waveguide having bars of overlay material of length (a) disposed periodically at a period (?) adjacent the silicon waveguide whereby a uniform grating output is achieved.Type: ApplicationFiled: June 26, 2018Publication date: May 21, 2020Inventors: Michal LIPSON, Aseema MOHANTY, Christopher T. PHARE, Moshe ZADKA, Samantha P. ROBERTS, You-Chia CHANG
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Publication number: 20200026005Abstract: An optical apparatus for coupling an optical fiber to a waveguide is disclosed. The optical apparatus can comprise a funnel coupler having an orifice configured to receive an optical fiber. The funnel coupler can mechanically support the optical fiber when received in the orifice. The funnel coupler can guide the optical fiber to a coupling end of the funnel coupler and a waveguide disposed adjacent the coupling end of the funnel coupler. One or more of the funnel coupler or the waveguide can be configured to optically couple the optical fiber and the waveguide when the optical fiber is received in the orifice.Type: ApplicationFiled: July 17, 2019Publication date: January 23, 2020Inventors: Michal Lipson, Oscar Adrian Jimenez Gordillo, Aseema Mohanty
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Patent number: 10156679Abstract: Optical coupling designs are disclosed to provide a photonic device, for example, that includes a substrate; an optical waveguide formed on the substrate and configured as a multimode waveguide to support light in different optical waveguide modes; and an optical fiber structured as a multimode fiber to support light in different optical fiber modes, the optical fiber located above the optical waveguide and optically coupled to the optical waveguide via evanescent coupling to allow light to be coupled between the optical fiber and the optical waveguide.Type: GrantFiled: August 28, 2017Date of Patent: December 18, 2018Assignee: Cornell UniversityInventors: Brian Stern, Michal Lipson, Aseema Mohanty, Felippe Barbosa, Jaime Cardenas
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Publication number: 20180156979Abstract: Optical coupling designs are disclosed to provide a photonic device, for example, that includes a substrate; an optical waveguide formed on the substrate and configured as a multimode waveguide to support light in different optical waveguide modes; and an optical fiber structured as a multimode fiber to support light in different optical fiber modes, the optical fiber located above the optical waveguide and optically coupled to the optical waveguide via evanescent coupling to allow light to be coupled between the optical fiber and the optical waveguide.Type: ApplicationFiled: August 28, 2017Publication date: June 7, 2018Applicant: Cornell UniversityInventors: Brian Stern, Michal Lipson, Aseema Mohanty, Felippe Barbosa, Jaime Cardenas
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Publication number: 20170351026Abstract: A probe structure includes a monolithically integrated waveguide and lens. The probe is based on SU-8 as a guiding material. A waveguide mold is defined using wet etching of silicon using a silicon dioxide mask patterned with 45° angle with respect to the silicon substrate edge and an aluminum layer acting as a mirror is deposited on the silicon substrate. A lens mold is made using isotropic etching of the fused silica substrate and then aligned to the silicon substrate. A waveguide polymer such as SU-8 2025 is flowed into the waveguide mask+lens mold (both on the same substrate) by decreasing its viscosity and using capillary forces via careful temperature control of the substrate.Type: ApplicationFiled: June 6, 2017Publication date: December 7, 2017Inventors: Michal Lipson, Mohammad Amin Tadayon, Aseema Mohanty, Felippe Barbosa
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Patent number: 9746614Abstract: Optical coupling designs are disclosed to provide a photonic device, for example, that includes a substrate; an optical waveguide formed on the substrate and configured as a multimode waveguide to support light in different optical waveguide modes; and an optical fiber structured as a multimode fiber to support light in different optical fiber modes, the optical fiber located above the optical waveguide and optically coupled to the optical waveguide via evanescent coupling to allow light to be coupled between the optical fiber and the optical waveguide.Type: GrantFiled: May 9, 2016Date of Patent: August 29, 2017Assignee: Cornell UniversityInventors: Brian Stern, Michal Lipson, Aseema Mohanty, Felippe Barbosa, Jaime Cardenas
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Publication number: 20160327748Abstract: Optical coupling designs are disclosed to provide a photonic device, for example, that includes a substrate; an optical waveguide formed on the substrate and configured as a multimode waveguide to support light in different optical waveguide modes; and an optical fiber structured as a multimode fiber to support light in different optical fiber modes, the optical fiber located above the optical waveguide and optically coupled to the optical waveguide via evanescent coupling to allow light to be coupled between the optical fiber and the optical waveguide.Type: ApplicationFiled: May 9, 2016Publication date: November 10, 2016Inventors: Brian Stern, Michal Lipson, Aseema Mohanty, Felippe Barbosa, Jaime Cardenas