Patents by Inventor Ehsan HOSSEINI
Ehsan 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).
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Publication number: 20200217961Abstract: 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. The optical wave comprises at least a first portion, and a second portion having a different characteristic from a characteristic of the first portion. Two or more receivers include at least one receiver comprising: 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, the optical phased array being configured to receive at least a portion of a collected optical wave arriving at the receive aperture along a respective collection angle, and a filter configured to filter the received portion of the collected optical wave according to the characteristic of the first portion of the optical wave.Type: ApplicationFiled: March 20, 2020Publication date: July 9, 2020Inventors: Peter Nicholas Russo, Christopher Vincent Poulton, Matthew Byrd, Zhan Su, Ehsan Hosseini, Michael Robert Watts
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Patent number: 10705407Abstract: Aspects of the present disclosure describe systems, methods, and structures providing speckle reduction in photonic phased array structures.Type: GrantFiled: May 8, 2018Date of Patent: July 7, 2020Assignee: Analog Photonics LLCInventors: Ehsan Hosseini, Michael Watts, Peter Russo
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Patent number: 10707837Abstract: Aspects of the present disclosure describe systems, methods, and structures including integrated laser systems that employ external chirping structures that may advantageously include phase shifters and/or one or more filters. Further aspects of the present disclosure describe systems, methods, and structures including laser systems that employ external chirping structures that may advantageously include optical phased arrays.Type: GrantFiled: July 5, 2018Date of Patent: July 7, 2020Assignee: Analog Photonics LLCInventors: Christopher Poulton, Matthew Byrd, Ehsan Hosseini, Erman Timurdogan, Michael Watts
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Patent number: 10690993Abstract: 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: September 15, 2018Date of Patent: June 23, 2020Assignee: Analog Photonics LLCInventors: Erman Timurdogan, Ehsan Hosseini, Michael Watts, Michael Whitson
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Patent number: 10684527Abstract: An optical phase shifter may include a waveguide core that has a top surface, and a semiconductor contact that is laterally displaced relative to the waveguide core and is electrically connected to the waveguide core. A top surface of the semiconductor contact is above the top surface of the waveguide core. The waveguide core may include a p-type core region and an n-type core region. A p-type semiconductor region may be in physical contact with the n-type core region of the waveguide core, and an n-type semiconductor region may be in physical contact with the p-type core region of the waveguide core. A phase shifter region and a light-emitting region may be disposed at different depth levels, and the light-emitting region may emit light from a phase shifter region that is in a position adjacent to the light-emitting region.Type: GrantFiled: March 21, 2019Date of Patent: June 16, 2020Assignee: Analog Photonics LLCInventors: Michael Watts, Ehsan Hosseini, Christopher Poulton, Erman Timurdogan
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Publication number: 20200127432Abstract: An internal laser component of an optical device comprises: a waveguide that defines a guided mode of a first optical wave characterized by a first propagation constant associated with a first effective refractive index. An optical antenna grating comprises: a waveguide that defines a guided mode of a second optical wave characterized by a second propagation constant associated with a second effective refractive index, and a grating structure configured to emit a portion of the second optical wave in a selected direction. The internal laser component and the optical antenna grating are configured to provide a relationship between the first effective refractive index and the second effective refractive index such that the selected direction is substantially insensitive to a change in a temperature of a thermal environment in which the internal laser component and the optical antenna grating are thermally coupled.Type: ApplicationFiled: October 18, 2019Publication date: April 23, 2020Inventors: Diedrik Vermeulen, Patrick Callahan, Michael Watts, Ehsan Hosseini, Christopher Vincent Poulton
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Patent number: 10613410Abstract: Aspects of the present disclosure describe configurations of, and methods for operating a large-scale optical phased array for contemporary applications including LIDAR, optical communications, imaging, and displays—among others.Type: GrantFiled: October 14, 2017Date of Patent: April 7, 2020Assignee: Analog Photonics LLCInventors: Ehsan Hosseini, Michael Watts, Christopher Poulton
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Publication number: 20200065573Abstract: Introduced here is a machine learning related technique for supplying an observed model additional training data based upon previously received training data. To determine textual content of a character string based on a digital image that includes a handwritten version of the character string a substantial amount of training data is used. The character string can include one or more characters, and the characters can include any of letters, numerals, punctuation marks, symbols, spaces, etc. Disclosed herein is a technique to determine variations between different images of matching known character strings and substitute those variations into the images in order to create more images with the same known character string.Type: ApplicationFiled: November 1, 2019Publication date: February 27, 2020Inventor: Ehsan Hosseini Asl
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Patent number: 10527906Abstract: Aspects of the present disclosure describe photonic integrated circuits on a common substrate including an optical phased array having a plurality of emitters and a plurality of thermal phase shifters in which the thermal phase shifters are thermally isolated from one another through the effect of one or more trenches formed over and/or under and/or around the thermal phase shifters and/or waveguides including same.Type: GrantFiled: January 29, 2018Date of Patent: January 7, 2020Assignee: Analog Photonics LLCInventors: Christopher Poulton, Michael Watts, Ehsan Hosseini, Erman Timurdogan
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Patent number: 10515265Abstract: Introduced here is a machine learning related technique for supplying an observed model additional training data based upon previously received training data. To determine textual content of a character string based on a digital image that includes a handwritten version of the character string a substantial amount of training data is used. The character string can include one or more characters, and the characters can include any of letters, numerals, punctuation marks, symbols, spaces, etc. Disclosed herein is a technique to determine variations between different images of matching known character strings and substitute those variations into the images in order to create more images with the same known character string.Type: GrantFiled: December 15, 2017Date of Patent: December 24, 2019Assignee: Captricity, Inc.Inventor: Ehsan Hosseini Asl
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Publication number: 20190324214Abstract: 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: June 28, 2019Publication date: October 24, 2019Inventors: Ehsan Hosseini, Michael Watts
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Publication number: 20190295530Abstract: A system for domain adaptation includes a domain adaptation model configured to adapt a representation of a signal in a first domain to a second domain to generate an adapted presentation and a plurality of discriminators corresponding to a plurality of bands of values of a domain variable. Each of the plurality of discriminators is configured to discriminate between the adapted representation and representations of one or more other signals in the second domain.Type: ApplicationFiled: July 3, 2018Publication date: September 26, 2019Applicant: salesforce.com, inc.Inventors: Ehsan Hosseini-Asl, Caiming Xiong, Yingbo Zhou, Richard Socher
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Publication number: 20190286073Abstract: A method for training parameters of a first domain adaptation model includes evaluating a cycle consistency objective using a first task specific model associated with a first domain and a second task specific model associated with a second domain. The evaluating the cycle consistency objective is based on one or more first training representations adapted from the first domain to the second domain by a first domain adaptation model and from the second domain to the first domain by a second domain adaptation model, and one or more second training representations adapted from the second domain to the first domain by the second domain adaptation model and from the first domain to the second domain by the first domain adaptation model. The method further includes evaluating a learning objective based on the cycle consistency objective, and updating parameters of the first domain adaptation model based on learning objective.Type: ApplicationFiled: August 3, 2018Publication date: September 19, 2019Inventors: Ehsan Hosseini-Asl, Caiming Xiong, Yingbo Zhou, Richard Socher
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Publication number: 20190273573Abstract: A device (e.g., a wireless device) may obtain a set of encoded bits, and select a set of symbol locations for puncturing. The device may then obtain and transmit modulated symbols based on the puncturing. For example, the device may encode information bits according to a convolutional code rate. In some cases, the encoded bits may be punctured (e.g., via a puncturing matrix with each column including either all 1's or all 0's) and the set of punctured bits may be mapped to symbols. In other cases, the encoded bits may be mapped to symbols, and the symbols may be punctured (e.g., via a puncturing matrix). The puncturing matrix may be identified based on a desired punctured code rate, the convolutional code rate used to encode the information bits, and whether or not the puncturing is to be applied before or after symbol mapping.Type: ApplicationFiled: February 8, 2019Publication date: September 5, 2019Inventors: Seyed Mohammad Ehsan Hosseini, Koorosh Akhavan
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Publication number: 20190260123Abstract: Aspects of the present disclosure describe systems, methods, and structures for optical phased array calibration that advantageously may be performed as a single-pass measurement of phase offset with respect to only a single interference measurement. In sharp contrast to the prior art—systems, methods, and structures according to aspects of the present disclosure advantageously produce phase offsets and phase functions of each element without time-consuming iterative procedures or multiple detector signals as required by the prior art.Type: ApplicationFiled: February 19, 2019Publication date: August 22, 2019Applicant: ANALOG PHOTONICS LLCInventors: Christopher Nicholas POULTON, Peter RUSSO, Erman TIMURDOGAN, Matthew BYRD, Diedrik VERMEULEN, Ehsan HOSSEINI
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Publication number: 20190235233Abstract: 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: ApplicationFiled: January 28, 2019Publication date: August 1, 2019Applicant: ANALOG PHOTONICS LLCInventors: Peter Nicholas RUSSO, Ehsan HOSSEINI, Christopher POULTON, Erman TIMURDOGAN, Diedrik VERMEULEN, Michael Robert WATTS, Michael WHITSON
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Publication number: 20190219886Abstract: An optical phase shifter may include a waveguide core that has a top surface, and a semiconductor contact that is laterally displaced relative to the waveguide core and is electrically connected to the waveguide core. A top surface of the semiconductor contact is above the top surface of the waveguide core. The waveguide core may include a p-type core region and an n-type core region. A p-type semiconductor region may be in physical contact with the n-type core region of the waveguide core, and an n-type semiconductor region may be in physical contact with the p-type core region of the waveguide core. A phase shifter region and a light-emitting region may be disposed at different depth levels, and the light-emitting region may emit light from a phase shifter region that is in a position adjacent to the light-emitting region.Type: ApplicationFiled: March 21, 2019Publication date: July 18, 2019Applicant: ANALOG PHOTONICS LLCInventors: Michael WATTS, Ehsan HOSSEINI, Christopher POULTON, Erman TIMURDOGAN
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Publication number: 20190219884Abstract: An optical phase shifter may include a waveguide core that has a top surface, and a semiconductor contact that is laterally displaced relative to the waveguide core and is electrically connected to the waveguide core. A top surface of the semiconductor contact is above the top surface of the waveguide core. The waveguide core may include a p-type core region and an n-type core region. A p-type semiconductor region may be in physical contact with the n-type core region of the waveguide core, and an n-type semiconductor region may be in physical contact with the p-type core region of the waveguide core. A phase shifter region and a light-emitting region may be disposed at different depth levels, and the light-emitting region may emit light from a phase shifter region that is in a position adjacent to the light-emitting region.Type: ApplicationFiled: March 21, 2019Publication date: July 18, 2019Applicant: ANALOG PHOTONICS LLCInventors: Michael WATTS, Ehsan HOSSEINI, Christopher POULTON, Erman TIMURDOGAN
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Publication number: 20190219885Abstract: An optical phase shifter may include a waveguide core that has a top surface, and a semiconductor contact that is laterally displaced relative to the waveguide core and is electrically connected to the waveguide core. A top surface of the semiconductor contact is above the top surface of the waveguide core. The waveguide core may include a p-type core region and an n-type core region. A p-type semiconductor region may be in physical contact with the n-type core region of the waveguide core, and an n-type semiconductor region may be in physical contact with the p-type core region of the waveguide core. A phase shifter region and a light-emitting region may be disposed at different depth levels, and the light-emitting region may emit light from a phase shifter region that is in a position adjacent to the light-emitting region.Type: ApplicationFiled: March 21, 2019Publication date: July 18, 2019Applicant: ANALOG PHOTONICS LLCInventors: Michael WATTS, Ehsan HOSSEINI, Christopher POULTON, Erman TIMURDOGAN
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Publication number: 20190212627Abstract: An optical phase shifter may include a waveguide core that has a top surface, and a semiconductor contact that is laterally displaced relative to the waveguide core and is electrically connected to the waveguide core. A top surface of the semiconductor contact is above the top surface of the waveguide core. The waveguide core may include a p-type core region and an n-type core region. A p-type semiconductor region may be in physical contact with the n-type core region of the waveguide core, and an n-type semiconductor region may be in physical contact with the p-type core region of the waveguide core. A phase shifter region and a light-emitting region may be disposed at different depth levels, and the light-emitting region may emit light from a phase shifter region that is in a position adjacent to the light-emitting region.Type: ApplicationFiled: March 21, 2019Publication date: July 11, 2019Applicant: ANALOG PHOTONICS LLCInventors: Michael WATTS, Ehsan HOSSEINI, Christopher POULTON, Erman TIMURDOGAN