Patents by Inventor Kevin MASUDA
Kevin MASUDA 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: 11940572Abstract: A polarization splitter-rotator (PSR) is described. The PSR having a silicon nitride based waveguide to split and rotate an optical beam. The silicon nitride based waveguide having a first silicon nitride segment including a first layer and a second layer coupled with the first layer.Type: GrantFiled: July 12, 2021Date of Patent: March 26, 2024Assignee: Aeva, Inc.Inventors: Bing Shen, Kevin Masuda, Brett E. Huff, Pradeep Srinivasan
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Publication number: 20230327395Abstract: Embodiments of the present disclosure include method for sequentially mounting multiple semiconductor devices onto a substrate having a composite metal structure on both the semiconductor devices and the substrate for improved process tolerance and reduced device distances without thermal interference. The mounting process causes “selective” intermixing between the metal layers on the devices and the substrate and increases the melting point of the resulting alloy materials.Type: ApplicationFiled: June 16, 2023Publication date: October 12, 2023Inventors: Zhizhong Tang, Pradeep Srinivasan, Kevin Masuda, Wenjing Liang
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Patent number: 11715929Abstract: Embodiments of the present disclosure include method for sequentially mounting multiple semiconductor devices onto a substrate having a composite metal structure on both the semiconductor devices and the substrate for improved process tolerance and reduced device distances without thermal interference. The mounting process causes “selective” intermixing between the metal layers on the devices and the substrate and increases the melting point of the resulting alloy materials.Type: GrantFiled: May 2, 2022Date of Patent: August 1, 2023Assignee: Aeva, Inc.Inventors: Zhizhong Tang, Pradeep Srinivasan, Kevin Masuda, Wenjing Liang
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Publication number: 20230123042Abstract: Embodiments of the present disclosure include method for sequentially mounting multiple semiconductor devices onto a substrate having a composite metal structure on both the semiconductor devices and the substrate for improved process tolerance and reduced device distances without thermal interference. The mounting process causes “selective” intermixing between the metal layers on the devices and the substrate and increases the melting point of the resulting alloy materials.Type: ApplicationFiled: May 2, 2022Publication date: April 20, 2023Inventors: Zhizhong Tang, Pradeep Srinivasan, Kevin Masuda, Wenjing Liang
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Patent number: 11605930Abstract: A Distributed Feedback Laser (DFB) mounted on a Silicon Photonic Integrated Circuit (Si PIC), the DFB having a longitudinal length which extends from a first end of the DFB laser to a second end of the DFB laser, the DFB laser comprising: an epi stack, the epi stack comprising: one or more active material layers; a layer comprising a partial grating, the partial grating extending from the second end of the DFB laser, only partially along the longitudinal length of the DFB laser such that it does not extend to the first end of the DFB laser; a highly reflective medium located at the first end of the DFB laser; and a back facet located at the second end of the DFB laser.Type: GrantFiled: March 20, 2020Date of Patent: March 14, 2023Assignee: Rockley Photonics LimitedInventors: Mazin Alalusi, Kevin Masuda, Pradeep Srinivasan
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Publication number: 20220373652Abstract: A light detection and ranging apparatus (LIDAR) includes at least one waveguide including a first cladding layer having a first refractive index and a second cladding layer having multiple second refractive indexes to expand an optical mode of an optical beam propagating within the waveguide. The second refractive indexes include a gradient of refractive indexes and the first refractive index is less than the second refractive indexes.Type: ApplicationFiled: August 5, 2022Publication date: November 24, 2022Inventors: Mazin Alalusi, Pradeep Srinivasan, Kevin Masuda
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Patent number: 11408980Abstract: A light detection and ranging apparatus (LIDAR) includes an optical source to generate an optical beam and one or more waveguides to steer the optical beam. The one or more waveguides include a first cladding layer having a first refractive index and a second cladding layer disposed below the first cladding layer, the second cladding layer having second refractive indexes including a range of different refractive indexes, wherein the range of different refractive indexes is greater than the first refractive index of the first cladding layer.Type: GrantFiled: December 8, 2021Date of Patent: August 9, 2022Assignee: Aeva, Inc.Inventors: Mazin Alalusi, Pradeep Srinivasan, Kevin Masuda
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Publication number: 20220196813Abstract: A polarization splitter-rotator (PSR) is described. The PSR having a silicon nitride based waveguide to split and rotate an optical beam. The silicon nitride based waveguide having a first silicon nitride segment including a first layer and a second layer coupled with the first layer.Type: ApplicationFiled: July 12, 2021Publication date: June 23, 2022Inventors: Bing Shen, Kevin Masuda, Brett E. Huff, Pradeep Srinivasan
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Patent number: 11362485Abstract: Embodiments of the present disclosure include method for sequentially mounting multiple semiconductor devices onto a substrate having a composite metal structure on both the semiconductor devices and the substrate for improved process tolerance and reduced device distances without thermal interference. The mounting process causes “selective” intermixing between the metal layers on the devices and the substrate and increases the melting point of the resulting alloy materials.Type: GrantFiled: October 15, 2021Date of Patent: June 14, 2022Assignee: Aeva, Inc.Inventors: Zhizhong Tang, Pradeep Srinivasan, Kevin Masuda, Wenjing Liang
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Patent number: 11237250Abstract: A light detection and ranging apparatus (LIDAR) includes an optical source to generate an optical beam and one or more waveguides to steer the optical beam. The one or more waveguides include a first cladding layer having a first refractive index and a second cladding layer disposed below the first cladding layer, the second cladding layer having second refractive indexes including a range of different refractive indexes, wherein the range of different refractive indexes is greater than the first refractive index of the first cladding layer.Type: GrantFiled: March 1, 2021Date of Patent: February 1, 2022Assignee: Aeva, Inc.Inventors: Mazin Alalusi, Pradeep Srinivasan, Kevin Masuda
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Patent number: 11061123Abstract: A LiDAR system includes an optical source to emit an optical beam and a PSR a silicon nitride based waveguide to split and rotate an optical beam. The silicon nitride based waveguide includes a first silicon nitride segment including a first layer and a second layer, the first silicon nitride segment having tapered widths along a longitudinal direction. The second layer includes a first section extending from a first end of the first silicon nitride segment to a converging plane with increasing widths and a second section extending from the converging plane to a second end of the first silicon nitride segment with decreasing widths. The LIDAR system further includes an optical element to generate a local oscillator (LO) signal and an optical detector to mix the target return signal with the LO signal to generate a heterodyne signal to extract range and velocity information of the target.Type: GrantFiled: April 2, 2021Date of Patent: July 13, 2021Assignee: Aeva, Inc.Inventors: Bing Shen, Kevin Masuda, Brett E. Huff, Pradeep Srinivasan
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Patent number: 10983200Abstract: A light detection and ranging (LiDAR) system according to the present disclosure comprises an optical source to emit an optical beam. The LiDAR system comprises a PSR comprising a silicon nitride based waveguide to split and rotate a target return signal of the optical beam from a target. The silicon nitride based waveguide includes a first silicon nitride segment and a second silicon nitride segment. The first silicon nitride segment includes a first layer and a second layer. The first silicon nitride segment has tapered widths along a longitudinal direction. The second silicon nitride segment includes a silicon nitride adiabatic coupler. The LiDAR system further comprises an optical element to generate a local oscillator (LO) signal and a PD to mix the target return signal with the LO signal to generate a heterodyne signal to extract information of the target.Type: GrantFiled: December 21, 2020Date of Patent: April 20, 2021Assignee: Aeva, Inc.Inventors: Bing Shen, Kevin Masuda, Brett E. Huff, Pradeep Srinivasan
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Patent number: 10955692Abstract: An optoelectronic component including a waveguide, the waveguide comprising an optically active region (OAR), the OAR having an upper and a lower surface; a lower doped region, wherein the lower doped region is located at and/or adjacent to at least a portion of a lower surface of the OAR, and extends laterally outwards from the OAR in a first direction; an upper doped region, wherein the upper doped region is located at and/or adjacent to at least a portion of an upper surface of the OAR, and extends laterally outwards from the OAR in a second direction; and an intrinsic region located between the lower doped region and the upper doped region.Type: GrantFiled: November 10, 2016Date of Patent: March 23, 2021Assignee: Rockley Photonics LimitedInventors: Guomin Yu, Hooman Abediasl, Damiana Lerose, Kevin Masuda, Andrea Trita, Aaron Zilkie
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Publication number: 20200303891Abstract: A Distributed Feedback Laser (DFB) mounted on a Silicon Photonic Integrated Circuit (Si PIC), the DFB having a longitudinal length which extends from a first end of the DFB laser to a second end of the DFB laser, the DFB laser comprising: an epi stack, the epi stack comprising: one or more active material layers; a layer comprising a partial grating, the partial grating extending from the second end of the DFB laser, only partially along the longitudinal length of the DFB laser such that it does not extend to the first end of the DFB laser; a highly reflective medium located at the first end of the DFB laser; and a back facet located at the second end of the DFB laser.Type: ApplicationFiled: March 20, 2020Publication date: September 24, 2020Inventors: Mazin Alalusi, Kevin Masuda, Pradeep Srinivasan
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Publication number: 20170299902Abstract: An optoelectronic component including a waveguide, the waveguide comprising an optically active region (OAR), the OAR having an upper and a lower surface; a lower doped region, wherein the lower doped region is located at and/or adjacent to at least a portion of a lower surface of the OAR, and extends laterally outwards from the OAR in a first direction; an upper doped region, wherein the upper doped region is located at and/or adjacent to at least a portion of an upper surface of the OAR, and extends laterally outwards from the OAR in a second direction; and an intrinsic region located between the lower doped region and the upper doped region.Type: ApplicationFiled: November 10, 2016Publication date: October 19, 2017Inventors: Guomin YU, Hooman ABEDIASL, Damiana LEROSE, Kevin MASUDA, Andrea TRITA, Aaron ZILKIE