Chen Sun

US Patent:

20220224433, Jul 14, 2022

Filed:

Jan 24, 2022

Appl. No.:

17/583185

Inventors:

- Santa Clara CA, US
Alexandra Wright - Oakland CA, US
Chen Sun - Berkeley CA, US
Mark Wade - Berkeley CA, US
Roy Edward Meade - Lafayette CA, US

International Classification:

H04J 14/02
H04Q 11/00
H04B 10/50

Abstract:

A TORminator module is disposed with a switch linecard of a rack. The TORminator module receives downlink electrical data signals from a rack switch. The TORminator module translates the downlink electrical data signals into downlink optical data signals. The TORminator module transmits multiple subsets of the downlink optical data signals through optical fibers to respective SmartDistributor modules disposed in respective racks. Each SmartDistributor module receives multiple downlink optical data signals through a single optical fiber from the TORminator module. The SmartDistributor module demultiplexes the multiple downlink optical data signals and distributes them to respective servers. The SmartDistributor module receives multiple uplink optical data signals from multiple servers and multiplexes them onto a single optical fiber for transmission to the TORminator module. The TORminator module coverts the multiple uplink optical data signals to multiple uplink electrical data signals, and transmits the multiple uplink electrical data signals to the rack switch.

US Patent:

20220214497, Jul 7, 2022

Filed:

Mar 22, 2022

Appl. No.:

17/701072

Inventors:

- Santa Clara CA, US
Chen Sun - Berkeley CA, US
Shahab Ardalan - Santa Clara CA, US
John Fini - Albany CA, US
Forrest Sedgwick - Santa Clara CA, US

International Classification:

G02B 6/12
H01L 21/66
G02B 6/13
G01M 11/00

Abstract:

An intact semiconductor wafer (wafer) includes a plurality of die. Each die has a top layer including routings of conductive interconnect structures electrically isolated from each other by intervening dielectric material. A top surface of the top layer corresponds to a top surface of the wafer. Below the top layer, each die has a device layer including optical devices and electronic devices. Each die has a cladding layer below the device layer and on a substrate of the wafer. Each die includes a photonic test port within the device layer. For each die, a light transfer region is formed within the intact wafer to extend through the top layer to the photonic test port within the device layer. The light transfer region provides a window for transmission of light into and out of the photonic test port from and to a location on the top surface of the wafer.

US Patent:

20230059176, Feb 23, 2023

Filed:

Nov 7, 2022

Appl. No.:

17/982497

Inventors:

- Santa Clara CA, US
Derek Van Orden - San Francisco CA, US
Mark Wade - Berkeley CA, US
John Fini - Oakland CA, US
Chen Sun - Berkeley CA, US
Milos Popovic - San Francisco CA, US
Anatol Khilo - Dublin CA, US

International Classification:

G02B 6/293
G02B 27/10
G02B 6/27
G02B 6/42
H04B 10/60

Abstract:

An electro-optic combiner includes a polarization splitter and rotator (PSR) that directs a portion of incoming light having a first polarization through a first optical waveguide (OW). The PSR rotates a portion of the incoming light having a second polarization to the first polarization to provide polarization-rotated light. The PSR directs the polarization-rotated light through a second OW. Each of the first and second OW's has a respective combiner section. The first and second OW combiner sections extend parallel to each other and have opposite light propagation directions. A plurality of ring resonators is disposed between the combiner sections of the first and second OW's and within an evanescent optically coupling distance of both the first and second OW's. Each of ring resonators operates at a respective resonant wavelength to optically couple light from the combiner section of the first OW into the combiner section of the second OW.

US Patent:

20230017072, Jan 19, 2023

Filed:

Jul 8, 2021

Appl. No.:

17/370522

Inventors:

- Mountain View CA, US
Mostafa Dehghani - Amsterdam, NL
Georg Heigold - Aachen, DE
Chen Sun - San Francisco CA, US
Mario Lucic - Adliswil, CH
Cordelia Luise Schmid - Saint-Ismier, FR

International Classification:

G06K 9/00
G06N 20/00

Abstract:

A computer-implemented method for classifying video data with improved accuracy includes obtaining, by a computing system comprising one or more computing devices, video data comprising a plurality of video frames; extracting, by the computing system, a plurality of video tokens from the video data, the plurality of video tokens comprising a representation of spatiotemporal information in the video data; providing, by the computing system, the plurality of video tokens as input to a video understanding model, the video understanding model comprising a video transformer encoder model; and receiving, by the computing system, a classification output from the video understanding model.

US Patent:

20210405295, Dec 30, 2021

Filed:

Jun 21, 2021

Appl. No.:

17/353782

Inventors:

- Santa Clara CA, US
Derek Van Orden - San Francisco CA, US
Mark Wade - Berkeley CA, US
John Fini - Oakland CA, US
Chen Sun - Berkeley CA, US
Milos Popovic - San Francisco CA, US
Anatol Khilo - Dublin CA, US

International Classification:

G02B 6/27

Abstract:

An optical input polarization management device includes a polarization splitter and rotator (PSR) that directs a portion of incoming light having a first polarization through a first optical waveguide (OW). The PSR rotates a portion of the incoming light having a second polarization to the first polarization so as to provide polarization-rotated light. The PSR directs the polarization-rotated light through a second OW. Light within the first and second OW's is input to a first two-by-two optical splitter (2x2OS). A first phase shifter (PS) is interfaced with either the first or second OW. Light is output from the first 2x2OS into a third OW and a fourth OW. Light within the third and fourth OW's is input to a second 2x2OS. A second PS is interfaced with either the third or fourth OW. Light is output from the second 2x2OS into a fifth OW for further processing.

US Patent:

20210405296, Dec 30, 2021

Filed:

Jun 21, 2021

Appl. No.:

17/353789

Inventors:

- Santa Clara CA, US
Derek Van Orden - San Francisco CA, US
Mark Wade - Berkeley CA, US
John Fini - Oakland CA, US
Chen Sun - Berkeley CA, US
Milos Popovic - San Francisco CA, US
Anatol Khilo - Dublin CA, US

International Classification:

G02B 6/293
G02B 27/10

Abstract:

An electro-optic combiner includes a polarization splitter and rotator (PSR) that directs a portion of incoming light having a first polarization through a first optical waveguide (OW). The PSR rotates a portion of the incoming light having a second polarization to the first polarization to provide polarization-rotated light. The PSR directs the polarization-rotated light through a second OW. Each of the first and second OW's has a respective combiner section. The first and second OW combiner sections extend parallel to each other and have opposite light propagation directions. A plurality of ring resonators is disposed between the combiner sections of the first and second OW's and within an evanescent optically coupling distance of both the first and second OW's. Each of ring resonators operates at a respective resonant wavelength to optically couple light from the combiner section of the first OW into the combiner section of the second OW.

US Patent:

20210405308, Dec 30, 2021

Filed:

Jun 21, 2021

Appl. No.:

17/353776

Inventors:

- Santa Clara CA, US
Derek Van Orden - San Francisco CA, US
Mark Wade - Berkeley CA, US
John Fini - Oakland CA, US
Chen Sun - Berkeley CA, US
Milos Popovic - San Francisco CA, US
Anatol Khilo - Dublin CA, US

International Classification:

G02B 6/42
G02B 6/27
G02B 6/293
H04B 10/60

Abstract:

An electro-optic receiver includes a polarization splitter and rotator (PSR) that directs incoming light having a first polarization through a first end of an optical waveguide, and that rotates incoming light from a second polarization to the first polarization to create polarization-rotated light that is directed to a second end of the optical waveguide. The incoming light of the first polarization and the polarization-rotated light travel through the optical waveguide in opposite directions. A plurality of ring resonators is optically coupled the optical waveguide. Each ring resonator is configured to operate at a respective resonant wavelength, such that the incoming light of the first polarization having the respective resonant wavelength optically couples into said ring resonator in a first propagation direction, and such that the polarization-rotated light having the respective resonant wavelength optically couples into said ring resonator in a second propagation direction opposite the first propagation direction.

US Patent:

20210286129, Sep 16, 2021

Filed:

Feb 24, 2021

Appl. No.:

17/184537

Inventors:

- Santa Clara CA, US
Vladimir Stojanovic - Berkeley CA, US
Chen Sun - Berkeley CA, US
Derek van Orden - San Francisco CA, US
Mark Taylor Wade - Berkeley CA, US

International Classification:

G02B 6/12
G02B 6/293
H04B 10/25
G02B 6/125
G02B 6/43

Abstract:

An electro-optical chip includes an optical input port, an optical output port, and an optical waveguide having a first end optically connected to the optical input port and a second end optically connected to the optical output port. The optical waveguide includes one or more segments. Different segments of the optical waveguide extends in either a horizontal direction, a vertical direction, a direction between horizontal and vertical, or a curved direction. The electro-optical chip also includes a plurality of optical microring resonators is positioned along at least one segment of the optical waveguide. Each microring resonator of the plurality of optical microring resonators is optically coupled to a different location along the optical waveguide. The electro-optical chip also includes electronic circuitry for controlling a resonant wavelength of each microring resonator of the plurality of optical microring resonators.