Patents by Inventor Chien-Yao Lu

Chien-Yao Lu 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).

  • Publication number: 20250174965
    Abstract: In some implementations, a vertical-cavity surface-emitting laser (VCSEL) includes a confinement layer and a polarization mode filter. The confinement layer defines a confinement aperture. The confinement aperture is asymmetrical with respect to at least one axis of the confinement aperture. The polarization mode filter includes a grating. The confinement aperture and the polarization mode filter are configured to control a quantity of optical modes supported by the VCSEL and to lock a polarization of each optical mode supported by the VCSEL.
    Type: Application
    Filed: January 22, 2024
    Publication date: May 29, 2025
    Inventors: Chien-Yao LU, Mike TAN, Albert YUEN
  • Publication number: 20250079797
    Abstract: In some implementations, a vertical cavity surface emitting laser (VCSEL) includes a substrate, a first mirror on the substrate, an active region on the first mirror, and a second mirror on the active region. The second mirror may include a plurality of reflector layers. A mesa may be defined in the second mirror. The mesa may taper out from a top surface of the mesa to a periphery of the mesa. A quantity of reflector layers, of the plurality of reflector layers, in sections of the mesa may decrease from a central section of the mesa, underneath the top surface, to the periphery of the mesa.
    Type: Application
    Filed: December 19, 2023
    Publication date: March 6, 2025
    Inventors: Albert YUEN, Chien-Yao LU
  • Publication number: 20240348014
    Abstract: A vertical-cavity surface-emitting laser (VCSEL) device includes a first distributed Bragg reflector (DBR) minor; a second DBR minor arranged on the first DBR mirror; an active layer arranged between the first DBR mirror and the second DBR mirror; and an oxidation layer arranged between the active layer and the second DBR mirror. The oxidation layer comprises an oxide aperture formed through the oxidation layer. A plurality of segmented oxidation trenches are arranged around an area in which the oxide aperture is formed and extend into the stacked structure to expose the oxidation layer for oxidation that forms the oxide aperture. A plurality of plating islands are spatially separated from each other. Each plating island vertically extends into a respective segmented oxidation trench of the plurality of segmented oxidation trenches and seals the respective segmented oxidation trench in order to prevent further oxidation of the oxidation layer.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 17, 2024
    Inventors: Chien-Yao LU, Albert YUEN, Shibajyoti GHOSH DASTIDER, Yeyu ZHU
  • Publication number: 20240136794
    Abstract: In some implementations, a vertical cavity surface emitting laser (VCSEL) includes a substrate having a first side and a second side, a first mirror disposed to the first side of the substrate, a second mirror disposed to the first side of the substrate and defining a first optical cavity between the first mirror and the second mirror, an active region between the first mirror and the second mirror, and a third mirror defining a second optical cavity. The VCSEL may be configured to generate a primary optical mode and a secondary optical mode under direct modulation. The second optical cavity may be configured to resonate the secondary optical mode.
    Type: Application
    Filed: December 16, 2022
    Publication date: April 25, 2024
    Inventors: Yeyu ZHU, Chien-Yao LU
  • Publication number: 20240014633
    Abstract: Some implementations described herein may provide an optical device. The optical device may include an optical emitter and an optical element aligned to the optical emitter. The optical element may include an oxidation aperture, one or more distributed Bragg reflectors (DBRs) disposed on the oxidation aperture, and a stacked periodic grating structure disposed on the one or more DBRs. The stacked periodic grating structure may include a set of layers. The set of layers may include alternating layers of a first material and a second material. The stacked periodic grating structure may have a selected period, depth, and fill factor that are selected to achieve greater than a threshold level of optical field confinement in a transverse direction of an optical field emitted by the optical emitter.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 11, 2024
    Inventors: Yeyu ZHU, Chien-Yao LU
  • Publication number: 20230261441
    Abstract: In some implementations, a vertical cavity surface emitting laser (VCSEL) device may include a substrate layer and a set of epitaxial layers disposed on the substrate layer. The set of epitaxial layers may include a first mirror and a second mirror. At least one of the first mirror or the second mirror may include at least one reflector pair that includes a semiconductor material layer and an oxidized semiconductor material layer. The set of epitaxial layers may include an oxidation trench axially extending into at least the second mirror, an active region between the first mirror and the second mirror, and an oxidation layer with an oxidation aperture.
    Type: Application
    Filed: March 24, 2022
    Publication date: August 17, 2023
    Inventors: Yeyu ZHU, Chien-Yao LU
  • Patent number: 11721949
    Abstract: In some implementations, a semiconductor wafer includes a plurality of optical emitters, wherein an optical emitter, of the plurality of optical emitters, is associated with a receiver conducting medium for receiving wireless power transfer, wherein the receiver conducting medium is configured to couple to a wireless power transfer component for wireless power transfer at a common resonant frequency, and wherein the receiver conducting medium is configured to power the optical emitter to provide an optical output when the wireless power transfer is applied at the common resonant frequency.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: August 8, 2023
    Assignee: Lumentum Operations LLC
    Inventor: Chien-Yao Lu
  • Publication number: 20230238778
    Abstract: In some implementations, a vertical cavity surface emitting laser (VCSEL) device includes a substrate layer and a set of epitaxial layers disposed on the substrate layer. The VCSEL device may include an active VCSEL formed in the set of epitaxial layers, where the active VCSEL is configured such that electrical pumping that provides optical gain for lasing is to be present in the active VCSEL. The VCSEL device may include at least one passive VCSEL formed in the set of epitaxial layers, where the passive VCSEL is configured such that electrical pumping that provides optical gain for lasing is to be absent in the at least one passive VCSEL. The at least one passive VCSEL may be positioned relative to the active VCSEL to cause coupling of one or more modes of the active VCSEL with one or more modes of the at least one passive VCSEL.
    Type: Application
    Filed: March 14, 2022
    Publication date: July 27, 2023
    Inventors: Yeyu ZHU, Chien-Yao LU
  • Patent number: 11451009
    Abstract: A vertical cavity surface emitting laser (VCSEL) may include a top contact, wherein the top contact is associated with a particular shape, and wherein the particular shape is a toothed shape with a particular quantity of teeth. The VCSEL may include at least one implanted region. The VCSEL may include at least one top contact segment.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: September 20, 2022
    Assignee: Lumentum Operations LLC
    Inventors: Pengfei Qiao, Chien-Yao Lu, Albert Yuen
  • Patent number: 10826274
    Abstract: A vertical-cavity surface-emitting laser (VCSEL) may include at least one layer forming a grating structure with a selected period, depth, and fill factor, wherein the period, the depth, and the fill factor of the grating structure are configured to achieve greater than a threshold level of efficiency for the VCSEL, less than a threshold current increase caused by power loss from higher order diffraction associated with the grating structure, and greater than a threshold polarization selectivity at an emission wavelength of the VCSEL.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: November 3, 2020
    Assignee: Lumentum Operations LLC
    Inventors: Pengfei Qiao, Chien-Yao Lu
  • Publication number: 20200335943
    Abstract: A vertical cavity surface emitting laser (VCSEL) may include a top contact, wherein the top contact is associated with a particular shape, and wherein the particular shape is a toothed shape with a particular quantity of teeth. The VCSEL may include at least one implanted region. The VCSEL may include at least one top contact segment.
    Type: Application
    Filed: December 23, 2019
    Publication date: October 22, 2020
    Inventors: Pengfei QIAO, Chien-Yao LU, Albert YUEN
  • Publication number: 20190252857
    Abstract: A vertical-cavity surface-emitting laser (VCSEL) may include at least one layer forming a grating structure with a selected period, depth, and fill factor, wherein the period, the depth, and the fill factor of the grating structure are configured to achieve greater than a threshold level of efficiency for the VCSEL, less than a threshold current increase caused by power loss from higher order diffraction associated with the grating structure, and greater than a threshold polarization selectivity at an emission wavelength of the VCSEL.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 15, 2019
    Inventors: Pengfei QIAO, Chien-Yao Lu