Patents by Inventor Ehsan Shah Hosseini
Ehsan Shah Hosseini 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).
-
Patent number: 11953678Abstract: Aspects of the present disclosure describe systems, methods, and structures for aberration correction of optical phased arrays that employ a corrective optical path difference (OPD) in the near-field of an OPA to correct or cancel out aberrations in emitted beams of the OPA including those reaching far-field distances by generating a spatially-varying OPD across the aperture of the OPA that is substantially equal and opposite to an equivalent OPD of the aberration(s).Type: GrantFiled: March 16, 2021Date of Patent: April 9, 2024Assignee: Analog Photonics LLCInventors: Peter Nicholas Russo, Ehsan Shah Hosseini, Christopher Vincent Poulton, Erman Timurdogan, Diedrik Vermeulen, Michael Robert Watts, Michael J. Whitson
-
Patent number: 11940621Abstract: An apparatus comprises: a first integrated circuit comprising: a plurality of sets of optical waveguides, each set of optical waveguides including a plurality of optical waveguide segments, and a plurality of optical emitter elements arranged over a first surface of the first integrated circuit, each optical emitter element coupled to a distal end of one of the optical waveguide segments; and a second integrated circuit comprising: a plurality of optical phase shifters that each provide a phase-shifted optical wave that is coupled to the first integrated circuit from a first edge surface of the second integrated circuit. The first edge surface of the second integrated circuit is in proximity to a row of proximal ends of the optical waveguide segments of a first set of the plurality of sets of optical waveguides.Type: GrantFiled: September 2, 2021Date of Patent: March 26, 2024Assignee: Analog Photonics LLCInventors: Michael Robert Watts, Ehsan Shah Hosseini, Benjamin Roy Moss, Christopher Vincent Poulton
-
Publication number: 20240057896Abstract: An optical sensor includes a waveguide for directing, receiving, and coherently mixing electromagnetic radiation from an electromagnetic radiation source to detect one or more physical phenomena. The waveguide is integrable into a printed circuit board, allowing the optical sensor to maintain a small footprint.Type: ApplicationFiled: August 16, 2023Publication date: February 22, 2024Inventors: Edward Vail, Ehsan Shah-Hosseini, Joseph M. Schmitt
-
Patent number: 11860422Abstract: Aspects of the present disclosure describe large scale steerable optical switched arrays that may be fabricated on a common substrate including many thousands or more emitters that may be arranged in a curved pattern at the focal plane of a lens thereby allowing the directional control of emitted light and selective reception of reflected light suitable for use in imaging, ranging, and sensing applications including accident avoidance.Type: GrantFiled: January 5, 2023Date of Patent: January 2, 2024Assignee: Analog Photonics LLCInventors: Ehsan Shah Hosseini, Michael Robert Watts
-
Publication number: 20230366986Abstract: An optical sensing device includes a planar substrate and an array of optical transceivers disposed on the planar substrate. Each optical transceiver includes a photodetector, at least one turning mirror having a reflective surface disposed diagonally relative to the substrate, and multiple waveguides disposed parallel to the substrate. The waveguides include a transmit waveguide, which is coupled to convey outgoing light from a coherent light source to the at least one turning mirror for output from the optical transceiver, and a receive waveguide, which is coupled to receive incoming light reflected by the at least one turning mirror and to convey the incoming light to the photodetector.Type: ApplicationFiled: May 12, 2022Publication date: November 16, 2023Inventors: Nurul Taimur Islam, Malcolm J. Northcott, Christopher M. Rogers, Helen H. Liang, Ehsan Shah-Hosseini, Jack E. Graves, Ariel Lipson, Daniel Kravitz
-
Patent number: 11762146Abstract: A plurality of waveguide structures are formed in at least one silicon layer of a first member. The first member includes: a first surface of a first silicon dioxide layer that is attached to a second member that consists essentially of an optically transmissive material having a thermal conductivity less than about 50 W/(m·K), and a second surface of material that was deposited over at least some of the plurality of waveguide structures. An array of phase shifters is formed in one or more layers of the first member. An array of temperature controlling elements are in proximity to the array of phase shifters.Type: GrantFiled: April 13, 2022Date of Patent: September 19, 2023Assignee: Analog Photonics LLCInventors: Michael Robert Watts, Benjamin Roy Moss, Ehsan Shah Hosseini, Christopher Vincent Poulton, Peter Nicholas Russo
-
Patent number: 11693196Abstract: A first photonic die has a first coupling edge and a first die surface, and comprises: a first waveguide extending in proximity to the first coupling edge; a portion of the first die surface forming an alignment edge substantially parallel to the first waveguide; and a first alignment feature etched into or formed adjacent to the first coupling edge. A second photonic die has a second coupling edge and a second die surface, and comprises: a second waveguide extending in proximity to the second coupling edge; a portion of the second die surface configured to form a receptacle sized to constrain a position of the alignment edge; and a second alignment feature etched into or formed adjacent to the second coupling edge and configured to enable alignment with the first alignment feature when the first photonic die and the second photonic die are substantially aligned with each other.Type: GrantFiled: December 17, 2021Date of Patent: July 4, 2023Assignee: Analog Photonics LLCInventors: Diedrik Vermeulen, Ehsan Shah Hosseini, Michael J. Whitson
-
Publication number: 20230152525Abstract: Aspects of the present disclosure describe large scale steerable optical switched arrays that may be fabricated on a common substrate including many thousands or more emitters that may be arranged in a curved pattern at the focal plane of a lens thereby allowing the directional control of emitted light and selective reception of reflected light suitable for use in imaging, ranging, and sensing applications including accident avoidance.Type: ApplicationFiled: January 5, 2023Publication date: May 18, 2023Inventors: Ehsan Shah Hosseini, Michael Robert Watts
-
Publication number: 20230146495Abstract: Aspects of the present disclosure describe large scale steerable optical switched arrays that may be fabricated on a common substrate including many thousands or more emitters that may be arranged in a curved pattern at the focal plane of a lens thereby allowing the directional control of emitted light and selective reception of reflected light suitable for use in imaging, ranging, and sensing applications including accident avoidance.Type: ApplicationFiled: January 5, 2023Publication date: May 11, 2023Inventors: Ehsan Shah Hosseini, Michael Robert Watts
-
Publication number: 20230053484Abstract: At least one beam of an optical wave is transmitted along a transmission angle toward a target location from a send aperture of a transmitter. A collected optical wave is received at receive apertures of two or more receivers. Each receiver comprises: a receive aperture arranged in proximity to at least one of the send aperture or a receive aperture of a different receiver, an optical phased array within the receive aperture, which receives at least a portion of a collected optical wave arriving at the receive aperture along a respective collection angle, and a detector that provides a signal based on the received portion of the collected optical wave. An estimated distance associated with the collected optical wave is determined based on a combination that includes a respective component corresponding to each of two or more of the signals provided from the detectors of the two or more receivers.Type: ApplicationFiled: November 3, 2022Publication date: February 23, 2023Inventors: Peter Nicholas Russo, Ehsan Shah Hosseini
-
Patent number: 11579370Abstract: Aspects of the present disclosure describe large scale steerable optical switched arrays that may be fabricated on a common substrate including many thousands or more emitters that may be arranged in a curved pattern at the focal plane of a lens thereby allowing the directional control of emitted light and selective reception of reflected light suitable for use in imaging, ranging, and sensing applications including accident avoidance.Type: GrantFiled: September 15, 2021Date of Patent: February 14, 2023Assignee: Analog Photonics LLCInventors: Ehsan Shah Hosseini, Michael Robert Watts
-
Patent number: 11513224Abstract: At least one beam of an optical wave is transmitted along a transmission angle toward a target location from a send aperture of a transmitter. A collected optical wave is received at receive apertures of two or more receivers. Each receiver comprises: a receive aperture arranged in proximity to at least one of the send aperture or a receive aperture of a different receiver, an optical phased array within the receive aperture, which receives at least a portion of a collected optical wave arriving at the receive aperture along a respective collection angle, and a detector that provides a signal based on the received portion of the collected optical wave. An estimated distance associated with the collected optical wave is determined based on a combination that includes a respective component corresponding to each of two or more of the signals provided from the detectors of the two or more receivers.Type: GrantFiled: May 3, 2019Date of Patent: November 29, 2022Assignee: Analog Photonics LLCInventors: Peter Nicholas Russo, Ehsan Shah Hosseini
-
Patent number: 11422431Abstract: An optical switching apparatus comprises: input ports receiving respective input optical waves, each coupled to a respective beam-forming structure comprising: an input optical waveguide, an optical power distributor to distribute optical power from a mode of the optical waveguide over the respective spatial region, and a spatially distributed phase shifter to apply different transmission optical phase shifts over different portions of the respective spatial region, where the transmission optical phase shifts determine the selected transmission angle; and output ports providing respective output optical waves, each coupled to a respective beam-receiving structure comprising: a spatially distributed phase shifter to apply different reception optical phase shifts over different portions of the respective spatial region, where the reception optical phase shifts determine the selected reception angle, an optical power combiner to combine optical power from different portions of the respective spatial region intoType: GrantFiled: June 11, 2020Date of Patent: August 23, 2022Assignee: Analog Photonics LLCInventors: Ehsan Shah Hosseini, Michael Robert Watts, Matthew Byrd
-
Publication number: 20220244454Abstract: A plurality of waveguide structures are formed in at least one silicon layer of a first member. The first member includes: a first surface of a first silicon dioxide layer that is attached to a second member that consists essentially of an optically transmissive material having a thermal conductivity less than about 50 W/(m·K), and a second surface of material that was deposited over at least some of the plurality of waveguide structures. An array of phase shifters is formed in one or more layers of the first member. An array of temperature controlling elements are in proximity to the array of phase shifters.Type: ApplicationFiled: April 13, 2022Publication date: August 4, 2022Inventors: Michael Robert Watts, Benjamin Roy Moss, Ehsan Shah Hosseini, Christopher Vincent Poulton, Peter Nicholas Russo
-
Patent number: 11353769Abstract: Speckle reduction in photonic phased array structures can be achieved using a receiver aperture that is configured to provide optical energy through portions of at least one optical network. The optical network is in communication with phase-controlled elements of at least one array of phase-controlled elements. Optical energy is coupled through a first portion of the optical network to a first optical detector in a detector structure, and optical energy is coupled through a second portion of the optical network to a second optical detector in the detector structure different from the first optical detector in the detector structure.Type: GrantFiled: June 18, 2020Date of Patent: June 7, 2022Assignee: Analog Photonics LLCInventors: Ehsan Shah Hosseini, Michael Robert Watts, Peter Nicholas Russo
-
Publication number: 20220146903Abstract: An apparatus includes: an optical phased array (e.g., on a photonic integrated circuit), a focusing element, which can be at a fixed position relative to the optical phased array and configured to receive an optical beam from the optical phased array, and a steering element, which can be at a fixed position relative to the focusing element and configured to transmit the optical beam received from the focusing element. In some implementations, at least one of the focusing element or the steering element is externally coupled to the photonic integrated circuit.Type: ApplicationFiled: October 14, 2021Publication date: May 12, 2022Inventors: Michael Robert Watts, Katia Shtyrkova, Christopher Vincent Poulton, Ehsan Shah Hosseini, Benjamin Roy Moss
-
Patent number: 11320585Abstract: A plurality of waveguide structures are formed in at least one silicon layer of a first member. The first member includes: a first surface of a first silicon dioxide layer that is attached to a second member that consists essentially of an optically transmissive material having a thermal conductivity less than about 50 W/(m·K), and a second surface of material that was deposited over at least some of the plurality of waveguide structures. An array of phase shifters is formed in one or more layers of the first member. An array of temperature controlling elements are in proximity to the array of phase shifters.Type: GrantFiled: August 14, 2020Date of Patent: May 3, 2022Assignee: Analog Photonics LLCInventors: Michael Robert Watts, Benjamin Roy Moss, Ehsan Shah Hosseini, Christopher Vincent Poulton, Peter Nicholas Russo
-
Publication number: 20220107474Abstract: A first photonic die has a first coupling edge and a first die surface, and comprises: a first waveguide extending in proximity to the first coupling edge; a portion of the first die surface forming an alignment edge substantially parallel to the first waveguide; and a first alignment feature etched into or formed adjacent to the first coupling edge. A second photonic die has a second coupling edge and a second die surface, and comprises: a second waveguide extending in proximity to the second coupling edge; a portion of the second die surface configured to form a receptacle sized to constrain a position of the alignment edge; and a second alignment feature etched into or formed adjacent to the second coupling edge and configured to enable alignment with the first alignment feature when the first photonic die and the second photonic die are substantially aligned with each other.Type: ApplicationFiled: December 17, 2021Publication date: April 7, 2022Inventors: Diedrik Vermeulen, Ehsan Shah Hosseini, Michael J. Whitson
-
Publication number: 20220075186Abstract: An apparatus comprises: a first integrated circuit comprising: a plurality of sets of optical waveguides, each set of optical waveguides including a plurality of optical waveguide segments, and a plurality of optical emitter elements arranged over a first surface of the first integrated circuit, each optical emitter element coupled to a distal end of one of the optical waveguide segments; and a second integrated circuit comprising: a plurality of optical phase shifters that each provide a phase-shifted optical wave that is coupled to the first integrated circuit from a first edge surface of the second integrated circuit. The first edge surface of the second integrated circuit is in proximity to a row of proximal ends of the optical waveguide segments of a first set of the plurality of sets of optical waveguides.Type: ApplicationFiled: September 2, 2021Publication date: March 10, 2022Applicant: Analog Photonics LLCInventors: Michael Robert Watts, Ehsan Shah Hosseini, Benjamin Roy Moss, Christopher Vincent Poulton
-
Patent number: 11269236Abstract: Aspects of the present disclosure describe optical structures and devices, and more particularly to improved, tunable optical structures including optical gratings that are dynamically affected and/or tuned by acousto-optic or electro-optic mechanisms.Type: GrantFiled: May 29, 2020Date of Patent: March 8, 2022Assignee: Analog Photonics LLCInventors: Erman Timurdogan, Ehsan Shah Hosseini, Michael Robert Watts, Michael J. Whitson