公开(公告)号：US11181572B2

公开(公告)日：2021-11-23

申请号：US16917124

申请日：2020-06-30

Applicant: Lumentum Operations LLC

Inventor： Yuanzhen Zhuang ,  Lucas Morales ,  Raman Srinivasan ,  Sean Burns ,  Siu Kwan Cheung ,  Tian Shi ,  Tao Li

IPC: G01R31/28

Abstract: A wafer testing system may comprise a chuck, a wafer carrier, a cathode plate, and a probe card. The chuck may be configured to hold the wafer carrier. The wafer carrier may be configured to hold a wafer on a surface of the wafer carrier, wherein the surface of the wafer carrier comprises one or more contact features protruding from the surface of the wafer carrier. The cathode plate may be configured to provide an electrical connection between the wafer carrier and the probe card, wherein a portion of a surface of the cathode plate is configured to be disposed on the one or more contact features of the wafer carrier. The probe card may be configured to test, using one or more probes associated with the probe card, the wafer when the wafer is on the surface of the wafer carrier.

公开(公告)号：US12055633B2

公开(公告)日：2024-08-06

申请号：US17109943

申请日：2020-12-02

Applicant: Lumentum Operations LLC

Inventor： Wei Shi ,  Huanlin Zhu ,  Lijun Zhu ,  Raman Srinivasan ,  Ed Murphy

IPC: G01S17/89 ,  G01S7/4865 ,  G03B17/02 ,  H01S5/183 ,  H05K9/00

CPC classification number: G01S17/89 ,  G01S7/4865 ,  G03B17/02 ,  H01S5/183 ,  H05K9/0007

Abstract: In some implementations, a housing for an electro-optical device comprises a molded dielectric structural component, an electromagnetic interference (EMI) shield, and a plurality of conductive traces. The molded dielectric structural component may be configured to separate the EMI shield and the plurality of conductive traces.

公开(公告)号：US10962726B2

公开(公告)日：2021-03-30

申请号：US16700121

申请日：2019-12-02

Applicant: Lumentum Operations LLC

Inventor： Frank Wu ,  Prasad Yalamanchili ,  Raman Srinivasan ,  Huijie Xu

IPC: G02B6/42 ,  C09J5/00 ,  C09J163/00

Abstract: A fiber attachment structure may comprise a monolithic platform structure having a first trench and a second trench to segment the monolithic platform structure into a chip mount area, a first island, and a second island. A laser chip may be mounted directly on the chip mount area and an optical fiber may be mounted on the first island by a first adhesive joint and on the second island by a second adhesive joint. For example, in some implementations, the first adhesive joint may include a first quantity of adhesive material attaching the optical fiber to the first island at a position at which a tip of the optical fiber is aligned with an output facet of the laser chip, and the second adhesive joint may include a second quantity of the adhesive material to mechanically secure the optical fiber to the second island.

公开(公告)号：US12166331B2

公开(公告)日：2024-12-10

申请号：US17301261

申请日：2021-03-30

Applicant: Lumentum Operations LLC

Inventor： Wei Shi ,  Siu Kwan Cheung ,  Lijun Zhu ,  Raman Srinivasan ,  Huanlin Zhu

IPC: H01S5/024 ,  H01S5/02 ,  H01S5/02315 ,  H01S5/02355 ,  H01S5/02375 ,  H01S5/183 ,  H01S5/42

Abstract: An optical device may include a substrate including a conductive core, a first layer stack on a first surface of the conductive core, a conductor-filled trench extending through the first layer stack to the conductive core such that the conductor-filled trench is on the first surface of the conductive core, and a second layer stack on a second surface of the conductive core. The optical device may include a vertical-cavity surface-emitting laser (VCSEL) chip above the conductor-filled trench. The VCSEL chip may include an array of VCSELs. A size of the conductor-filled trench may match a size of the VCSEL chip, match a size of an emission region of the array of VCSELs, or be greater than the size of the emission region of the array of VCSELs and less than the size of the VCSEL chip.

公开(公告)号：US11885830B2

公开(公告)日：2024-01-30

申请号：US17360260

申请日：2021-06-28

Applicant: Lumentum Operations LLC

Inventor： Sean Burns ,  Raman Srinivasan ,  Lucas Morales ,  Tian Shi ,  Yuanzhen Zhuang ,  Cho-Shuen Hsieh ,  Albert Huang

IPC: G01R1/073 ,  G01R1/067

CPC classification number: G01R1/07342 ,  G01R1/06761

Abstract: In some implementations, a probe tip assembly includes a driver printed circuit board assembly (PCBA) and a probe tip subassembly. The probe tip subassembly includes a plurality of probe tips, wherein a probe tip, of the plurality of probe tips, extends beyond an end of the PCBA, and the PCBA and the probe tip are configured to transmit an electric signal to test an optical component. The probe tip may include a material comprising at least one of copper (Cu), a beryllium copper (BeCu) alloy, tungsten (W), Paliney, Neyoro, and/or another conductive material.

公开(公告)号：US10763639B2

公开(公告)日：2020-09-01

申请号：US16253471

申请日：2019-01-22

Applicant: Lumentum Operations LLC

Inventor： Kong Weng Lee ,  Vincent V. Wong ,  Jay A. Skidmore ,  Prasad Yalamanchili ,  Gity Samadi ,  Raman Srinivasan ,  Yongfeng Guan ,  Slava Khassine

IPC: H01L33/60 ,  H01L33/62 ,  H01S5/02 ,  H01S5/00 ,  H01S5/022

Abstract: A device may include a lead-frame including a first electrode and a second electrode, a carrier, a set of optical devices mechanically and electrically connected to the first electrode, and a set of electrical connections that electrically connects the second electrode to the set of optical devices. The lead-frame and the carrier may be mechanically connected to each other via a set of interlocking structures associated with the lead-frame and the carrier. The lead-frame and the set of optical devices may have matching coefficients of thermal expansion. The first electrode and the second electrode may be electrically isolated from each other.

公开(公告)号：US20190252849A1

公开(公告)日：2019-08-15

申请号：US16253471

申请日：2019-01-22

Applicant: Lumentum Operations LLC

Inventor： Kong Weng Lee ,  Vincent V. Wong ,  Jay A. Skidmore ,  Prasad Yalamanchili ,  Gity Samadi ,  Raman Srinivasan ,  Yongfeng Guan ,  Slava Khassine

IPC: H01S5/022 ,  H01S5/00 ,  H01L33/62 ,  H01L33/60

Abstract: A device may comprise a lead-frame comprising a first electrode and a second electrode, a carrier, a set of optical devices mechanically and electrically connected to the first electrode, and a set of electrical connections that electrically connects the second electrode to the set of optical devices. The lead-frame and the carrier may be mechanically connected to each other via a set of interlocking structures associated with the lead-frame and the carrier. The lead-frame and the set of optical devices may have matching coefficients of thermal expansion. The first electrode and the second electrode may be electrically isolated from each other.