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公开(公告)号：US11630334B2
公开(公告)日：2023-04-18
申请号：US16948579
申请日：2020-09-24
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Stanley Cheung , Di Liang , Sudharsanan Srinivasan
Abstract: Examples described herein relate to an optical coupler. The optical coupler may include a first optical waveguide base layer, a second optical waveguide base layer, an insulating layer disposed over at least a portion of both the first optical waveguide base layer and the second optical waveguide base layer, and a semiconductor material layer disposed over the insulating layer. Overlapping portions of the first optical waveguide base layer, the insulating layer, and the semiconductor material layer form a first optical waveguide, and overlapping portions of the second optical waveguide base layer, the insulating layer, and the semiconductor material layer form a second optical waveguide. Moreover, the optical coupler may include a plurality of metal contacts to receive one or more first biasing voltages to operate one of the first optical waveguide base layer and the second optical waveguide base layer in an accumulation mode.
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公开(公告)号：US11487181B2
公开(公告)日：2022-11-01
申请号：US16946653
申请日：2020-06-30
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Sudharsanan Srinivasan , Di Liang , Geza Kurczveil , Raymond G. Beausoleil
Abstract: Examples herein relate to optical systems. In particular, implementations herein relate to an optical system including an optical transmitter configured to transmit optical signals. The optical transmitter includes a first optical source coupled to an input waveguide and configured to emit light having different wavelengths through the input waveguide. The optical transmitter includes a Mach-Zehnder interferometer that includes a first arm and a second arm. The MZI further includes a first optical coupler configured to couple the emitted light from the input waveguide to the first and second arms and an array of two or more second optical sources coupled to the first arm. Each of the two or more second optical sources are configured to be injection locked to a different respective wavelength of the emitted light transmitted from the first optical source. The MZI further includes a second optical coupler configured to combine the emitted light from the first and second arms after propagating therethrough.
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公开(公告)号：US11355899B2
公开(公告)日：2022-06-07
申请号：US17004955
申请日：2020-08-27
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Bassem Tossoun , Di Liang , John Paul Strachan
Abstract: An optical device includes a light-emitting device integrated with a memory device. The memory device include a first electrode and a second electrode, and the light-emitting device includes a third electrode and the second electrode. In such configuration, a first voltage between the second electrode and the third electrode causes the light-emitting device to emit light of a first wavelength, and a second voltage between the first electrode and the second electrode while the memory device is at OFF state causes the light-emitting device to emit light of a second wavelength shorter than the first wavelength or while the memory device is at ON state causes the light-emitting device to emit light of a third wavelength longer than the first wavelength.
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公开(公告)号：US20220021459A1
公开(公告)日：2022-01-20
申请号：US16947056
申请日：2020-07-16
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Geza Kurczveil , Di Liang , Sudharsanan Srinivasan , Raymond G. Beausoleil
IPC: H04B10/50
Abstract: Examples herein relate to optical systems. In particular, implementations herein relate to an optical system including an optical transmitter configured to transmit optical signals. The optical transmitter includes a first optical source and a second optical source coupled to the first optical source and injection seeded by the first optical source. The optical transmitter further includes an output coupler, the second optical source coupled to the optical coupler via an output waveguide and configured to emit light having multiple different wavelengths through the output waveguide. In some implementations, the second optical source is self-injection seeded.
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公开(公告)号：US20210376933A1
公开(公告)日：2021-12-02
申请号：US16891008
申请日：2020-06-02
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Di Liang , Zhihong Huang
IPC: H04B10/61
Abstract: Systems and methods are provided for receiving an optical signal from an optical fiber, including: coupling via an optical coupler the optical signal from an optical fiber into first and second waveguides, wherein the optical signal comprises TE and TM polarized optical signals and the optical coupler couples the TE polarized optical signal into the first waveguide and the TM polarized optical signal into the second waveguide; equalizing the TE and TM polarized optical signals from the coupler to equalize optical power levels of the TE and TM polarized optical signals; optically combining the equalized TE and TM polarized optical signals; and transmitting the combined optical signal to a photodetector.
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Patent Agency Ranking
公开(公告)号：US11177631B2
公开(公告)日：2021-11-16
申请号：US15930955
申请日：2020-05-13
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Geza Kurczveil , Di Liang , Raymond G. Beausoleil
Abstract: Examples disclosed herein relate to multi-wavelength semiconductor comb lasers. In some examples disclosed herein, a multi-wavelength semiconductor comb laser may include a waveguide included in an upper silicon layer of a silicon-on-insulator (SOI) substrate. The comb laser may include a quantum dot (QD) active gain region above the SOI substrate defining an active section in a laser cavity of the comb laser and a dispersion tuning section included in the laser cavity to tune total cavity dispersion of the comb laser.
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公开(公告)号：US10989878B2
公开(公告)日：2021-04-27
申请号：US15929675
申请日：2020-05-15
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Raymond G. Beausoleil , Di Liang , Marco Fiorentino , Geza Kurczveil , Mir Ashkan Seyedi , Zhihong Huang
Abstract: An example system for multi-wavelength optical signal splitting is disclosed. The example disclosed herein comprises a first splitter, a second splitter, and a modulator. The system receives a multi-wavelength optical signal and an electrical signal, wherein the multi-wavelength optical signal comprises a plurality of optical wavelengths and has a power level. The first splitter is to split the plurality of optical wavelengths into a plurality of optical wavelength groups. The second splitter is to split the multi-wavelength optical signal or the plurality of optical wavelength groups into a plurality of lower power signal groups. The modulator is to encode the electrical signal into the plurality of optical wavelength groups, the plurality of lower power signal groups, or a combination thereof.
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公开(公告)号：US10897119B1
公开(公告)日：2021-01-19
申请号：US16570830
申请日：2019-09-13
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Geza Kurczveil , Di Liang , Zhihong Huang , Xiaoge Zeng , Raymond G. Beausoleil
IPC: H01S3/13 , H01S5/0687 , H01S5/068 , H01S5/026 , H01S5/02 , H01S5/10 , G01J1/04 , H01S5/0683 , H01S5/06 , H04J14/02 , H04B10/69 , H04B10/079 , G01K7/16 , G01J5/20 , G01J5/08 , H04B10/50 , H01S5/343
Abstract: Techniques and circuitry for a semiconductor laser with enhanced lasing wavelengths stabilization are described. A semiconductor laser can generate an optical signal (e.g., single or multi-wavelength), for use in a Dense Wavelength Division Multiplexing (DWDM) interconnect system. The stabilization circuitry can include temperature sensor circuitry that measures an operational temperature of the semiconductor laser, and a feedback controller that can determine a temperature-induced wavelength shift that may be experienced by the multi-wavelength optical signal based on the laser's temperature. The feedback controller is also configured to generate a compensation signal that is determined to cause a complimentary shift in the multi-wavelength optical signal, where the complimentary shift can compensate for the temperature-induced wavelength shift. An integrated MOS capacitor of the laser can be charged by the signal in a manner that effectuates the complimentary shift and tunes the multi-wavelength optical signal to compensate for temperature-induced shift, thereby enhancing stabilization.
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公开(公告)号：US10797468B2
公开(公告)日：2020-10-06
申请号：US16671303
申请日：2019-11-01
Applicant: Hewlett Packard Enterprise Development LP
Inventor： Geza Kurczveil , Di Liang , Raymond G. Beausoleil
IPC: H01S5/00 , H01S5/10 , H01S5/34 , H01S5/065 , H01S5/06 , H01S5/22 , H01S5/02 , H01S5/068 , H01S5/50
Abstract: Examples disclosed herein relate to multi-wavelength semiconductor lasers. In some examples disclosed herein, a multi-wavelength semiconductor laser may include a silicon-on-insulator (SOI) substrate and a quantum dot (QD) layer above the SOI substrate. The QD layer may include and active gain region and may have at least one angled junction at one end of the QD layer. The SOI substrate may include a waveguide in an upper silicon layer and a mode converter to facilitate optical coupling of a lasing mode to the waveguide.
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公开(公告)号：US20200274327A1
公开(公告)日：2020-08-27
申请号：US15930955
申请日：2020-05-13
Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
Inventor： Geza Kurczveil , Di Liang , Raymond G. Beausoleil
Abstract: Examples disclosed herein relate to multi-wavelength semiconductor comb lasers. In some examples disclosed herein, a multi-wavelength semiconductor comb laser may include a waveguide included in an upper silicon layer of a silicon-on-insulator (SOI) substrate. The comb laser may include a quantum dot (QD) active gain region above the SOI substrate defining an active section in a laser cavity of the comb laser and a dispersion tuning section included in the laser cavity to tune total cavity dispersion of the comb laser.
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