Patents by Inventor Albert Yuen
Albert Yuen 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: 20240348014Abstract: 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: ApplicationFiled: June 16, 2023Publication date: October 17, 2024Inventors: Chien-Yao LU, Albert YUEN, Shibajyoti GHOSH DASTIDER, Yeyu ZHU
-
Patent number: 12119610Abstract: A vertical cavity surface emitting laser (VCSEL) may include a substrate layer, epitaxial layers on the substrate layer, and angled reflectors configured to receive an optical beam emitted toward a bottom surface of the VCSEL and redirect the optical beam through an exit window in a top surface of the VCSEL. In some implementations, the angled reflectors may be formed in the substrate layer. Additionally, or alternatively, the VCSEL may include molded optics, where the molded optics include the angled reflectors. In some implementations, the exit window may include an integrated lens.Type: GrantFiled: January 9, 2023Date of Patent: October 15, 2024Assignee: Lumentum Operations LLCInventor: Albert Yuen
-
Patent number: 12034273Abstract: An emitter may include a substrate, a conductive layer on at least a bottom surface of a trench, and a first metal layer to provide a first electrical contact of the emitter on an epitaxial side of the substrate. The first metal layer may be within the trench such that the first metal layer contacts the conductive layer within the trench. The emitter may further include a second metal layer to provide a second electrical contact of the emitter on the epitaxial side of the substrate, and an isolation implant to block lateral current flow between the first electrical contact and the second electrical contact.Type: GrantFiled: February 8, 2023Date of Patent: July 9, 2024Assignee: Lumentum Operations LLCInventors: Eric R. Hegblom, Albert Yuen
-
Patent number: 12025650Abstract: An apparatus may include an upper transparent plate to hold a wafer of bottom-emitting or bottom-detecting optical devices, wherein the upper transparent plate comprises a set of holes in an area of the upper transparent plate for holding the wafer. The apparatus may include a lower transparent plate and a structure supporting the upper transparent plate and the lower transparent plate to form a cavity bounded by the upper transparent plate, the lower transparent plate, and the structure, wherein the structure comprises an opening in fluid communication with the cavity, wherein applying suction through the opening, via the cavity and the set of holes, holds the wafer flat on the upper transparent plate, and wherein an optical path, between a bottom-emitting or bottom-detecting optical device of the bottom-emitting or bottom-detecting optical devices of the wafer and a testing device, passes through the upper transparent plate, the cavity, and the lower transparent plate.Type: GrantFiled: January 21, 2022Date of Patent: July 2, 2024Assignee: Lumentum Operations LLCInventor: Albert Yuen
-
Publication number: 20240195506Abstract: An optical data communication device includes a plurality of emitters. The plurality of emitters are configured to emit respective laser beams that are associated with a same spectral range and that are to couple into an input end of a multi-mode optical fiber. A size of an oxide aperture of each emitter, of the plurality of emitters, is less than or equal to 3.5 micrometers. Each emitter is a single-mode emitter or a reduced-mode emitter. A pitch between adjacent emitters is less than or equal to 30 micrometers. The plurality of emitters are disposed in a configuration pattern, wherein a central region of the configuration pattern does not include any emitter of the plurality of emitters.Type: ApplicationFiled: February 22, 2023Publication date: June 13, 2024Inventor: Albert YUEN
-
Patent number: 11923653Abstract: In some implementations, an optical device for mounting in a flip-chip configuration includes a plurality of flip-chip bumps that are arranged in a pattern on the optical device, wherein the pattern is not aligned with a crystal cleavage plane associated with a substrate of the optical device. In some implementations, the optical device further includes a gap that separates a primary region of the optical device and a secondary region of the optical device, wherein at least one portion of a side of the gap is oriented at a non-zero angle to the crystal cleavage plane.Type: GrantFiled: March 4, 2021Date of Patent: March 5, 2024Assignee: Lumentum Operations LLCInventors: Albert Yuen, Mitchell Srimongkol, Joseph Lin
-
Publication number: 20240047947Abstract: An emitter array may comprise a plurality of emitters that includes two adjacent emitters. The emitter array may comprise a plurality of emitters that includes two adjacent emitters. The ohmic metal layer may include a portion that is shared by, and located between, the two adjacent emitters. The emitter array may comprise a protective layer over the ohmic metal layer. The emitter array may comprise a via through the protective layer to the portion. The via is shared by, and located between, the two adjacent emitters.Type: ApplicationFiled: September 15, 2023Publication date: February 8, 2024Inventors: Albert YUEN, Ajit Vijay BARVE
-
Patent number: 11859985Abstract: Systems and methods are disclosed for improved mapping data validation using randomness measures. Methods may include receiving a map dataset that includes a plurality of map features. A knowledge graph may be generated based on the map dataset that may include nodes representing or corresponding to the map features. Nodes corresponding to map features of a particular feature type may be identified and edges connected to the identified nodes may be processed to identify a plurality of paths. A randomness measure for the particular feature type may be determined based on the plurality of paths. The randomness measure may indicate a predictability of occurrences of map features of the particular feature type in the map dataset. The randomness measure may then be compared to a second randomness measure determined based on another map dataset.Type: GrantFiled: August 21, 2019Date of Patent: January 2, 2024Assignee: Lyft, Inc.Inventors: Barak Michener, Thomas Michael Dedeco, Albert Yuen
-
Patent number: 11777280Abstract: An emitter array may comprise a plurality of emitters that includes two adjacent emitters. The emitter array may comprise a plurality of emitters that includes two adjacent emitters. The ohmic metal layer may include a portion that is shared by, and located between, the two adjacent emitters. The emitter array may comprise a protective layer over the ohmic metal layer. The emitter array may comprise a via through the protective layer to the portion. The via is shared by, and located between, the two adjacent emitters.Type: GrantFiled: July 17, 2020Date of Patent: October 3, 2023Assignee: Lumentum Operations LLCInventors: Albert Yuen, Ajit Vijay Barve
-
Patent number: 11694426Abstract: The present disclosure relates to systems, methods, and non-transitory computer readable media for identifying traffic control features based on telemetry patterns within digital image representations of vehicle telemetry information. The disclosed systems can generate a digital image representation based on collected telemetry information to represent the frequency of different speed-location combinations for transportation vehicles passing through a traffic area. The disclosed systems can also apply a convolutional neural network to analyze the digital image representation and generate a predicted classification of a type of traffic control feature that corresponds to the digital image representation of vehicle telemetry information. The disclosed systems further train the convolutional neural network to determine traffic control features based on training data.Type: GrantFiled: April 27, 2021Date of Patent: July 4, 2023Assignee: Lyft, Inc.Inventors: Deeksha Goyal, Han Suk Kim, James Kevin Murphy, Albert Yuen
-
Publication number: 20230187905Abstract: An emitter may include a substrate, a conductive layer on at least a bottom surface of a trench, and a first metal layer to provide a first electrical contact of the emitter on an epitaxial side of the substrate. The first metal layer may be within the trench such that the first metal layer contacts the conductive layer within the trench. The emitter may further include a second metal layer to provide a second electrical contact of the emitter on the epitaxial side of the substrate, and an isolation implant to block lateral current flow between the first electrical contact and the second electrical contact.Type: ApplicationFiled: February 8, 2023Publication date: June 15, 2023Inventors: Eric R. HEGBLOM, Albert YUEN
-
Patent number: 11581705Abstract: An emitter may include a substrate, a conductive layer on at least a bottom surface of a trench, and a first metal layer to provide a first electrical contact of the emitter on an epitaxial side of the substrate. The first metal layer may be within the trench such that the first metal layer contacts the conductive layer within the trench. The emitter may further include a second metal layer to provide a second electrical contact of the emitter on the epitaxial side of the substrate, and an isolation implant to block lateral current flow between the first electrical contact and the second electrical contact.Type: GrantFiled: February 19, 2020Date of Patent: February 14, 2023Assignee: Lumentum Operations LLCInventors: Eric R. Hegblom, Albert Yuen
-
Patent number: 11552445Abstract: A vertical cavity surface emitting laser (VCSEL) may include a substrate layer, epitaxial layers on the substrate layer, and angled reflectors configured to receive an optical beam emitted toward a bottom surface of the VCSEL and redirect the optical beam through an exit window in a top surface of the VCSEL. In some implementations, the angled reflectors may be formed in the substrate layer. Additionally, or alternatively, the VCSEL may include molded optics, where the molded optics include the angled reflectors. In some implementations, the exit window may include an integrated lens.Type: GrantFiled: May 27, 2020Date of Patent: January 10, 2023Assignee: Lumentum Operations LLCInventor: Albert Yuen
-
Publication number: 20230006422Abstract: A surface emitting laser may include an isolation layer including a first center portion and a first plurality of outer portions extending from the first center portion, and a metal layer including a second center portion and a second plurality of outer portions extending from the second center portion. The metal layer may be formed on the isolation layer such that a first outer portion, of the second plurality of outer portions, is formed over one of the first plurality of outer portions. The surface emitting laser may include a passivation layer including a plurality of openings. An opening may be formed over the first outer portion. The surface emitting laser may include a plurality of oxidation trenches. An oxidation trench may be positioned at least partially between the first outer portion and a second outer portion of the second plurality of outer portions.Type: ApplicationFiled: September 2, 2022Publication date: January 5, 2023Inventors: Ajit Vijay BARVE, Albert YUEN
-
Patent number: 11456575Abstract: A vertical-cavity surface-emitting laser (VCSEL) may include a substrate and a set of epitaxial layers on the substrate. The set of epitaxial layers may include a first mirror and a second mirror, an active region between the first mirror and the second mirror, and an oxidation layer to provide optical and electrical confinement in the VCSEL. The oxidation layer may be near the first mirror. The set of epitaxial layers may include an oxide lens to control a characteristic of an output beam emitted by the VCSEL. The oxide lens may be separate from the oxidation layer, and may be a lens that is separate from the first mirror and from the second mirror.Type: GrantFiled: December 18, 2019Date of Patent: September 27, 2022Assignee: Lumentum Operations LLCInventors: Albert Yuen, Eric R. Hegblom
-
Patent number: 11451009Abstract: 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: GrantFiled: December 23, 2019Date of Patent: September 20, 2022Assignee: Lumentum Operations LLCInventors: Pengfei Qiao, Chien-Yao Lu, Albert Yuen
-
Patent number: 11437784Abstract: A surface emitting laser may include an isolation layer including a first center portion and a first plurality of outer portions extending from the first center portion, and a metal layer including a second center portion and a second plurality of outer portions extending from the second center portion. The metal layer may be formed on the isolation layer such that a first outer portion, of the second plurality of outer portions, is formed over one of the first plurality of outer portions. The surface emitting laser may include a passivation layer including a plurality of openings. An opening may be formed over the first outer portion. The surface emitting laser may include a plurality of oxidation trenches. An oxidation trench may be positioned at least partially between the first outer portion and a second outer portion of the second plurality of outer portions.Type: GrantFiled: February 21, 2020Date of Patent: September 6, 2022Assignee: Lumentum Operations LLCInventors: Ajit Vijay Barve, Albert Yuen
-
Publication number: 20220200232Abstract: In some implementations, an optical device for mounting in a flip-chip configuration includes a plurality of flip-chip bumps that are arranged in a pattern on the optical device, wherein the pattern is not aligned with a crystal cleavage plane associated with a substrate of the optical device. In some implementations, the optical device further includes a gap that separates a primary region of the optical device and a secondary region of the optical device, wherein at least one portion of a side of the gap is oriented at a non-zero angle to the crystal cleavage plane.Type: ApplicationFiled: March 4, 2021Publication date: June 23, 2022Inventors: Albert YUEN, Mitchell SRIMONGKOL, Joseph LIN
-
Publication number: 20220146567Abstract: An apparatus may include an upper transparent plate to hold a wafer of bottom-emitting or bottom-detecting optical devices, wherein the upper transparent plate comprises a set of holes in an area of the upper transparent plate for holding the wafer. The apparatus may include a lower transparent plate and a structure supporting the upper transparent plate and the lower transparent plate to form a cavity bounded by the upper transparent plate, the lower transparent plate, and the structure, wherein the structure comprises an opening in fluid communication with the cavity, wherein applying suction through the opening, via the cavity and the set of holes, holds the wafer flat on the upper transparent plate, and wherein an optical path, between a bottom-emitting or bottom-detecting optical device of the bottom-emitting or bottom-detecting optical devices of the wafer and a testing device, passes through the upper transparent plate, the cavity, and the lower transparent plate.Type: ApplicationFiled: January 21, 2022Publication date: May 12, 2022Inventor: Albert Yuen
-
Patent number: 11231452Abstract: An apparatus may include an upper transparent plate to hold a wafer of bottom-emitting or bottom-detecting optical devices, wherein the upper transparent plate comprises a set of holes in an area of the upper transparent plate for holding the wafer. The apparatus may include a lower transparent plate and a structure supporting the upper transparent plate and the lower transparent plate to form a cavity bounded by the upper transparent plate, the lower transparent plate, and the structure, wherein the structure comprises an opening in fluid communication with the cavity, wherein applying suction through the opening, via the cavity and the set of holes, holds the wafer flat on the upper transparent plate, and wherein an optical path, between a bottom-emitting or bottom-detecting optical device of the bottom-emitting or bottom-detecting optical devices of the wafer and a testing device, passes through the upper transparent plate, the cavity, and the lower transparent plate.Type: GrantFiled: March 18, 2020Date of Patent: January 25, 2022Assignee: Lumentum Operations LLCInventor: Albert Yuen