公开(公告)号：US11676636B2

公开(公告)日：2023-06-13

申请号：US17008208

申请日：2020-08-31

Applicant: Seagate Technology LLC

Inventor： Kevin A. Gomez ,  Dan Mohr ,  Daniel Joseph Klemme ,  Aditya Jain

IPC: G11C13/04 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18

CPC classification number: G11B20/10259 ,  G11B20/10462 ,  G11B20/1217 ,  G11B20/1803 ,  G11C13/04 ,  G11B2020/1237

Abstract: Implementations described and claimed herein provide a high-capacity, high-bandwidth scalable storage device. The scalable storage device includes a layer stack including at least one memory layer and at least one optical control layer positioned adjacent to the memory layer. The memory layer includes a plurality of memory cells and the optical control layer is adapted to receive optically-encoded read/write signals and to effect read and write operations to the plurality of memory cells through an electrical interface.

公开(公告)号：US11635553B2

公开(公告)日：2023-04-25

申请号：US16943972

申请日：2020-07-30

Applicant: Seagate Technology LLC

Inventor： Aditya Jain ,  Zoran Jandric ,  Dan Mohr ,  Kevin A. Gomez ,  Krishnan Subramanian

IPC: G02B5/00 ,  G02B1/00 ,  G02F1/313 ,  G02F1/29 ,  G01S7/481 ,  G02B6/122 ,  G02B27/00

Abstract: An active metasurface includes a number of periodically-repeated unit cells arranged on a substrate that each include a plasmonic waveguide shaped and sized to provide a cutoff mode that captures light of a target wavelength. The active metasurface includes an index modulation controller that controllably varies a voltage differential across each one of the periodically-repeated cells to change a phase of light incident on the metasurface.

公开(公告)号：US20230005504A1

公开(公告)日：2023-01-05

申请号：US17856321

申请日：2022-07-01

Applicant: Seagate Technology LLC

Inventor： Kevin A. Gomez ,  Aditya Jain ,  Anil J. Reddy ,  Todd Michael Lammers

IPC: G11B13/04 ,  G02F1/21 ,  G02F1/01 ,  H05K1/02

Abstract: Apparatus and method for transferring data in a data storage system, such as but not limited to a hard disc drive (HDD). An optical link is provided between an analog front end (AFE) of a data storage device controller circuit (SOC) and a preamplifier/driver circuit (preamp) mounted to a rotary actuator to transfer an analog domain signal. A selected component is extracted from the signal using a modulation element such as a micro-resonance ring (MRR) or a Mach-Zehnder Interferometer Modulation (MZM) device. The extracted component is forwarded to a processing circuit to facilitate a transfer of data between a local memory and a non-volatile memory (NVM). The optical link includes a flexible portion in a flex circuit affixed to the rotary actuator and which supports the preamp. Multiplexed read, write, and power control signals are concurrently transmitted via the optical link. The link can concurrently service multiple head-disc assemblies (HDAs).

公开(公告)号：US20230003842A1

公开(公告)日：2023-01-05

申请号：US17850350

申请日：2022-06-27

Applicant: Seagate Technology LLC

Inventor： Aditya Jain

IPC: G01S7/481 ,  G01S17/93 ,  G01S17/89 ,  G01S17/08

Abstract: A light detection and ranging system can have a modulator coupled to a light source with the modulator consisting of a first PN junction with a first width and a second PN junction with a second width. In order for the total transfer function to add to arccosine, the first width and second width are configured differently.

公开(公告)号：US11341992B1

公开(公告)日：2022-05-24

申请号：US17170420

申请日：2021-02-08

Applicant: Seagate Technology LLC

Inventor： Aditya Jain ,  Zoran Jandric

IPC: G11B11/105 ,  G11B5/48 ,  G11B20/10 ,  G11B5/00 ,  G11B7/126

Abstract: An optical isolator has a first optical property with respect to transmitted components of the light traveling towards a target and a second optical property with respect to reflected components of the light traveling towards the laser. The second optical property suppresses the reflected components of the light. The optical isolator can be used in applications such as heat-assisted magnetic recording and LIDAR.

公开(公告)号：US20230021576A1

公开(公告)日：2023-01-26

申请号：US17868906

申请日：2022-07-20

Applicant: Seagate Technology LLC

Inventor： Daniel Joseph Klemme ,  Aditya Jain

IPC: G01S7/481 ,  G01S17/26 ,  G02B6/12 ,  G01S7/4914

Abstract: Method and apparatus for enhancing resolution in a light detection and ranging (LiDAR) system. In some embodiments, an emitter emits light in the form of multiplexed beams of randomized, multiple wavelengths across a field of view (FoV). A detector uses one or more detection channels to detect the multiplexed beams reflected from a target within the FoV to decode range information associated with the target. The multiplexed beams may be generated by multiple light sources such as laser diodes, or a single source such as a frequency comb device. Randomization may be applied via a pseudorandom bit sequence modulator, and multiplexing/demultiplexing may be performed using waveguides and micro-resonance rings (MRRs). The multiplexed beam may be emitted using an optical phase array (OPA) integrated circuit device to scan the FoV simultaneously using the different wavelengths. The range information can be used to adaptively adjust the wavelengths in a subsequent scan.

公开(公告)号：US20230003883A1

公开(公告)日：2023-01-05

申请号：US17853475

申请日：2022-06-29

Applicant: Seagate Technology LLC

Inventor： Daniel Joseph Klemme ,  Aditya Jain

IPC: G01S17/26

Abstract: A light detection and ranging system can have a controller connected to a light beam emitter. To provide enhanced resolution compared to frequency modulated continuous wave light detection and ranging systems, the controller may be configured to provide coherent light detection and ranging by utilizing pixel-based phase modulated continuous wave light emission from the emitter.

公开(公告)号：US11531146B2

公开(公告)日：2022-12-20

申请号：US16944005

申请日：2020-07-30

Applicant: Seagate Technology LLC

Inventor： Aditya Jain ,  Zoran Jandric ,  Dan Mohr ,  Kevin A. Gomez ,  Krishnan Subramanian

IPC: G02B5/00 ,  G02B1/00 ,  G02F1/313 ,  G02F1/29

Abstract: An active metasurface includes a number of periodically-repeated unit cells arranged on a substrate, each of the unit cells including a high-index dielectric block; a heat source positioned to selectively modulate heat applied to the high-index dielectric block; and an insulating undercut region at an interface between the high-index dielectric block and the substrate.

公开(公告)号：US20240336966A1

公开(公告)日：2024-10-10

申请号：US18607991

申请日：2024-03-18

Applicant: Seagate Technology LLC

Inventor： Vivek Krishnamurthy ,  Aditya Jain ,  Gemma Mendonsa ,  Anil J. Reddy

IPC: C12Q1/6869

CPC classification number: C12Q1/6869

Abstract: A laser-based molecular sequencing system includes a two-dimensional photonic crystal surface emitting laser (PCSEL) array including a plurality of PCSEL devices located in a first layer, each PCSEL device oriented in a direction perpendicular to the first layer. The system also includes a controller configured to modulate a bias on at least one PCSEL device of the plurality of PCSEL devices, the modulation configured to selectively operate each PCSEL device as an emitter or detector at a point in time based on the bias.

公开(公告)号：US20230079518A1

公开(公告)日：2023-03-16

申请号：US17876656

申请日：2022-07-29

Applicant: Seagate Technology LLC

Inventor： Aditya Jain ,  Yueyang Chen

IPC: G02F1/35 ,  G02F1/00 ,  G02B5/08

Abstract: A metasurface includes a plurality of Bragg mirrors, each having a defect cavity therein, arrayed in a grid. A heat source is provided for each of the plurality of Bragg mirrors. Each heat source is positioned to selectively modulate heat applied to its respective Bragg mirror and to impart a different phase shift via the applied heat from the heat source.