Patents by Inventor Murtaza Askari
Murtaza Askari 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: 12007605Abstract: A polarization-independent, optical circulator is formed in silicon photonics. The polarization-independent, optical circulator uses an optical splitter having two couplers and two waveguides joining the two couplers. One of the two waveguides is thinner than the other to create a large effective index difference between TE and TM modes transmitted through the one waveguide. Polarization rotators, including reciprocal and/or non-reciprocal rotators, are further used to create the optical circulator.Type: GrantFiled: May 7, 2021Date of Patent: June 11, 2024Assignee: Skorpios Technologies, Inc.Inventors: Majid Sodagar, Wenyi Wang, Changyi Li, Guoliang Li, Murtaza Askari, Yi Wang, John Dallesasse, Stephen B. Krasulick
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Patent number: 11901692Abstract: A semiconductor laser device is provided. The semiconductor laser device includes: a substrate having a first facet; a guiding layer having a second facet through which an output light is configured to be emitted; a bottom dielectric layer between the substrate and the guiding layer; and a top dielectric layer on the guiding layer. The second facet is at an angle relative to the first facet.Type: GrantFiled: December 3, 2021Date of Patent: February 13, 2024Assignee: Skorpios Technologies, Inc.Inventors: Murtaza Askari, Stephen B. Krasulick, Majid Sodagar, John Zyskind
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Publication number: 20220166183Abstract: A semiconductor laser device is provided. The semiconductor laser device includes: a substrate having a first facet; a guiding layer having a second facet through which an output light is configured to be emitted; a bottom dielectric layer between the substrate and the guiding layer; and a top dielectric layer on the guiding layer. The second facet is at an angle relative to the first facet.Type: ApplicationFiled: December 3, 2021Publication date: May 26, 2022Inventors: Murtaza Askari, Stephen B. Krasulick, Majid Sodagar, John Zyskind
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Patent number: 11217963Abstract: A photonic die includes an optical component that can emit output light. The optical component includes a substrate having a length and width that are substantially greater than a thickness thereof, the thickness defining a vertical direction. The optical component includes a vertical edge, and a reflective or antireflective coating on the vertical edge, wherein the reflective or antireflective coating includes a silicon-based material.Type: GrantFiled: November 27, 2019Date of Patent: January 4, 2022Assignee: Skorpios Technologies, Inc.Inventors: Murtaza Askari, Stephen B. Krasulick
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Publication number: 20210405294Abstract: A polarization-independent, optical circulator is formed in silicon photonics. The polarization-independent, optical circulator uses an optical splitter having two couplers and two waveguides joining the two couplers. One of the two waveguides is thinner than the other to create a large effective index difference between TE and TM modes transmitted through the one waveguide. Polarization rotators, including reciprocal and/or non-reciprocal rotators, are further used to create the optical circulator.Type: ApplicationFiled: May 7, 2021Publication date: December 30, 2021Inventors: Majid Sodagar, Wenyi Wang, Changyi Li, Guoliang Li, Murtaza Askari, Yi Wang, John Dallesasse, Stephen B. Krasulick
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Patent number: 11002911Abstract: A polarization-independent, optical circulator is formed in silicon photonics. The polarization-independent, optical circulator uses an optical splitter having two couplers and two waveguides joining the two couplers. One of the two waveguides is thinner than the other to create a large effective index difference between TE and TM modes transmitted through the one waveguide. Polarization rotators, including reciprocal and/or non-reciprocal rotators, are further used to create the optical circulator.Type: GrantFiled: July 21, 2017Date of Patent: May 11, 2021Assignee: Skorpios Technologies, Inc.Inventors: Majid Sodagar, Wenyi Wang, Changyi Li, Guoliang Li, Murtaza Askari, Yi Wang
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Patent number: 10742347Abstract: An optical receiver, used in wavelength-division multiplexing, has multiple photodetectors per channel. The optical receiver comprises a demultiplexer to separate incoming light into different output waveguides, one output waveguide for each channel. A splitter is used in each output waveguide to split each output waveguide into two or more branches. A separate photodetector is coupled with each branch so that two or more photodetectors are used to measure each channel.Type: GrantFiled: December 18, 2018Date of Patent: August 11, 2020Assignee: Skorpios Technologies, Inc.Inventors: Guoliang Li, Murtaza Askari
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Publication number: 20190379476Abstract: An optical receiver, used in wavelength-division multiplexing, has multiple photodetectors per channel. The optical receiver comprises a demultiplexer to separate incoming light into different output waveguides, one output waveguide for each channel. A splitter is used in each output waveguide to split each output waveguide into two or more branches. A separate photodetector is coupled with each branch so that two or more photodetectors are used to measure each channel.Type: ApplicationFiled: December 18, 2018Publication date: December 12, 2019Inventors: Guoliang Li, Murtaza Askari
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Patent number: 10295746Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.Type: GrantFiled: August 28, 2018Date of Patent: May 21, 2019Assignee: Skorpios Technologies, Inc.Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
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Publication number: 20190094464Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.Type: ApplicationFiled: August 28, 2018Publication date: March 28, 2019Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
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Patent number: 10200142Abstract: An optical receiver, used in wavelength-division multiplexing, has multiple photodetectors per channel. The optical receiver comprises a demultiplexer to separate incoming light into different output waveguides, one output waveguide for each channel. A splitter is used in each output waveguide to split each output waveguide into two or more branches. A separate photodetector is coupled with each branch so that two or more photodetectors are used to measure each channel.Type: GrantFiled: August 15, 2016Date of Patent: February 5, 2019Assignee: Skorpios Technologies, Inc.Inventors: Guoliang Li, Murtaza Askari
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Patent number: 10088629Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.Type: GrantFiled: May 5, 2017Date of Patent: October 2, 2018Assignee: Skorpios Technologies, Inc.Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
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Publication number: 20180196197Abstract: A polarization-independent, optical circulator is formed in silicon photonics. The polarization-independent, optical circulator uses an optical splitter having two couplers and two waveguides joining the two couplers. One of the two waveguides is thinner than the other to create a large effective index difference between TE and TM modes transmitted through the one waveguide. Polarization rotators, including reciprocal and/or non-reciprocal rotators, are further used to create the optical circulator.Type: ApplicationFiled: July 21, 2017Publication date: July 12, 2018Applicant: Skorpios Technologies, Inc.Inventors: Majid Sodagar, Wenyi Wang, Changyi Li, Guoliang Li, Murtaza Askari, Yi Wang
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Publication number: 20170242192Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.Type: ApplicationFiled: May 5, 2017Publication date: August 24, 2017Applicant: Skorpios Technologies, Inc.Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
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Patent number: 9664855Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.Type: GrantFiled: September 12, 2016Date of Patent: May 30, 2017Assignee: Skorpios Technologies, Inc.Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
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Publication number: 20170090118Abstract: An optical filter for attenuating higher-order modes in an optical waveguide includes a shoulder slab formed of a first material having a first index of refraction and disposed on a second material having a second index of refraction, the first index of refraction being higher than the second index of refraction. The shoulder slab defines a near end having a first width, an intermediate section, adjacent to the first end section, and a far end section, adjacent to the intermediate section and opposite the first end section along a direction of beam propagation. The optical filter also includes a waveguide ridge, formed of the first material and disposed atop the shoulder slab, that traverses the shoulder slab, and is configured to guide light of a fundamental mode along the direction of beam propagation from the near end section to the far end section.Type: ApplicationFiled: September 12, 2016Publication date: March 30, 2017Applicant: Skorpios Technologies, Inc.Inventors: Majid Sodagar, Murtaza Askari, Guoliang Li
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Publication number: 20170048016Abstract: An optical receiver, used in wavelength-division multiplexing, has multiple photodetectors per channel. The optical receiver comprises a demultiplexer to separate incoming light into different output waveguides, one output waveguide for each channel. A splitter is used in each output waveguide to split each output waveguide into two or more branches. A separate photodetector is coupled with each branch so that two or more photodetectors are used to measure each channel.Type: ApplicationFiled: August 15, 2016Publication date: February 16, 2017Applicant: Skorpios Technologies, Inc.Inventors: Guoliang Li, Murtaza Askari