公开(公告)号：US20200243701A1

公开(公告)日：2020-07-30

申请号：US16260256

申请日：2019-01-29

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Geza Kurczveil ,  Di Liang ,  Bassem Tossoun ,  Chong Zhang ,  Xiaoge Zeng ,  Zhihong Huang ,  Raymond Beausoleil

IPC: H01L31/0352 ,  H01L31/0304 ,  H01L31/107 ,  H01L31/0232

Abstract: A quantum-dot based avalanche photodiode (QD-APD) may include a silicon substrate and a waveguide on which a quantum dot (QD) stack of layers is formed having a QD light absorption layer, a charge multiplication layer (CML), and spacer layers. The QD stack may be formed within a p-n junction. The waveguide may include a mode converter to facilitate optical coupling and light transfer from the waveguide to the QD light absorption layer. The QD absorption layer and the CML layer may be combined or separate layers. The CML may generate electrical current from the absorbed light with more than 100% quantum efficiency when the p-n junction is reverse-biased.

公开(公告)号：US10481327B2

公开(公告)日：2019-11-19

申请号：US15109847

申请日：2014-01-29

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Di Liang ,  Zhihong Huang ,  Geza Kurczveil

IPC: G02B6/12 ,  G02B6/124 ,  G01J1/04 ,  G01J1/44 ,  G02B6/122

Abstract: One example includes a photodetector system. The system includes a waveguide photodetector into which an input optical signal comprising a frequency band of interest is provided and from which the input optical signal is absorbed to generate an output signal that is indicative of an intensity of the input optical signal. The system also includes a reflector coupled to the waveguide photodetector and which is to reject frequencies outside of the frequency band of interest and to reflect the frequency band of interest back into the waveguide photodetector.

公开(公告)号：US10381801B1

公开(公告)日：2019-08-13

申请号：US15963543

申请日：2018-04-26

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Di Liang

IPC: H01S5/00 ,  H01S5/183 ,  H01S5/30 ,  H01S5/22 ,  H01S5/20 ,  H01S5/223 ,  H01S5/323 ,  H01S5/02 ,  H01S5/10 ,  H01S5/32

Abstract: A device comprises a substrate, a sacrificial material layer over the substrate, a first solid-state material layer over the sacrificial layer, a dielectric layer over solid-state material layer, and a second solid-state material layer over the dielectric layer. The sacrificial material layer may have an airgap, the solid-state material layer may comprise a structure over the airgap and may be separated from a bulk portion of the first material layer by trenches, where the trenches extend to the airgap.

公开(公告)号：US20190149244A1

公开(公告)日：2019-05-16

申请号：US16231159

申请日：2018-12-21

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Cheng Li ,  Di Liang ,  Kehan Zhu

IPC: H04B10/564 ,  H04L25/03 ,  H04L25/02 ,  H04B10/58 ,  H04B10/54 ,  H04L27/01 ,  H04B10/80 ,  H04B10/50

CPC classification number: H04B10/564 ,  H04B10/504 ,  H04B10/541 ,  H04B10/58 ,  H04B10/801 ,  H04L25/028 ,  H04L25/03885 ,  H04L27/01

Abstract: Examples disclosed herein relate to optical driver circuits. In some of the disclosed examples, an optical driver circuit includes a pre-driver circuit and a main driver circuit. The pre-driver circuit may include a pattern generator and at least one serializer to generate a main modulation signal and an inverted delayed modulation signal. The main driver circuit may include a level controller to control amplitudes of pre-emphasis on rising and falling edges of a modulation signal output and an equalization controller to transition the modulation signal output from the pre-emphasis amplitudes to main modulation amplitudes using the inverted delayed modulation signal.

公开(公告)号：US20190094466A1

公开(公告)日：2019-03-28

申请号：US15718306

申请日：2017-09-28

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Raymond G. Beausoleil ,  Di Liang ,  Marco Fiorentino ,  Geza Kurczveil ,  Mir Ashkan Seyedi ,  Zhihong Huang

IPC: G02B6/293 ,  G02B6/12 ,  H04B10/50 ,  H04J14/02 ,  H04Q11/00

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.

公开(公告)号：US10109983B2

公开(公告)日：2018-10-23

申请号：US15140588

申请日：2016-04-28

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Di Liang ,  Geza Kurczveil ,  Raymond G. Beausoleil ,  Marco Fiorentino

IPC: H01S5/34 ,  H01S5/343 ,  H01S5/32 ,  H01S5/347 ,  H01S3/23 ,  H01S3/063 ,  H01S5/02

Abstract: An example method of manufacturing a semiconductor device. A first wafer may be provided that includes a first layer that contains quantum dots. A second wafer may be provided that includes a buried dielectric layer and a second layer on the buried dielectric layer. An interface layer may be formed on at least one of the first layer and the second layer, where the interface layer may be an insulator, a transparent electrical conductor, or a polymer. The first wafer may be bonded to the second wafer by way of the interface layer.

公开(公告)号：US20170331249A1

公开(公告)日：2017-11-16

申请号：US15151647

申请日：2016-05-11

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Di Liang ,  Yingtao Hu

IPC: H01S5/026 ,  H01S5/042 ,  H01S5/02 ,  H01S5/00 ,  H01S5/0625

CPC classification number: H01S5/0265 ,  H01S5/0085 ,  H01S5/021 ,  H01S5/026 ,  H01S5/0607 ,  H01S5/1032 ,  H01S5/1071

Abstract: According to an example of the present disclosure a semiconductor laser diode includes a layer of graphene between an active laser region and a semiconductor substrate structure. The semiconductor laser diode may further include a first pair of electrodes to apply a potential difference across the active laser region and a second pair of electrodes to apply a potential difference across the layer of graphene.

公开(公告)号：US09755395B2

公开(公告)日：2017-09-05

申请号：US15107932

申请日：2014-01-24

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Di Liang ,  Raymond G. Beausoleil

IPC: H01S3/14 ,  H01S3/083 ,  H01S3/063 ,  H01S3/13 ,  H01S3/23 ,  H01S3/00 ,  H01S3/10 ,  H01S3/082 ,  H01S3/137

CPC classification number: H01S3/083 ,  H01S3/005 ,  H01S3/0637 ,  H01S3/082 ,  H01S3/10053 ,  H01S3/1305 ,  H01S3/1307 ,  H01S3/137 ,  H01S3/2391

Abstract: An optical system includes an output waveguide to propagate an optical output signal and a plurality of ring laser systems. Each of the plurality of ring laser systems includes a ring laser to generate a ring laser optical signal and a local waveguide. The ring laser can be optically coupled to the output waveguide to provide a first portion of the ring laser optical signal on the output waveguide as part of the optical output signal, and can be optically coupled to the local waveguide to provide a second portion of the ring laser optical signal on the local waveguide. Each of the plurality of ring laser systems can be to control a phase of the second portion of the ring laser optical signal to provide constructive interference with the ring laser optical signal at an optical coupling of the ring laser and the local waveguide.

公开(公告)号：US20170059778A1

公开(公告)日：2017-03-02

申请号：US15119824

申请日：2014-04-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Zhihong Huang ,  Charles M Santori ,  Di Liang ,  Sonny Vo

IPC: G02B6/293 ,  G02B6/122 ,  G02F1/225

CPC classification number: G02B6/29395 ,  G02B6/12007 ,  G02B6/12033 ,  G02B6/122 ,  G02B6/29382 ,  G02B2006/12035 ,  G02F1/2255 ,  G02F2001/212

Abstract: An example device in accordance with an aspect of the present disclosure includes a diamond waveguide disposed on a substrate. The substrate includes a dielectric material. A tuner is to extend from the substrate, and is disposed at least in part over the waveguide. The tuner includes a tuner electrode to control a variable distance between the tuner and the waveguide to vary an effective refractive index of the waveguide.

Abstract translation: 根据本公开的一个方面的示例性装置包括布置在基板上的金刚石波导。 基板包括电介质材料。 调谐器将从衬底延伸，并且至少部分地布置在波导上。 调谐器包括调谐器电极，用于控制调谐器和波导之间的可变距离以改变波导的有效折射率。

公开(公告)号：US20160334576A1

公开(公告)日：2016-11-17

申请号：US15109847

申请日：2014-01-29

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Di Liang ,  Zhihong Huang ,  Geza Kurczveil

IPC: G02B6/12 ,  G01J1/04 ,  G02B6/122 ,  G01J1/44

Abstract: One example includes a photodetector system. The system includes a waveguide photodetector into which an input optical signal comprising a frequency band of interest is provided and from which the input optical signal is absorbed to generate an output signal that is indicative of an intensity of the input optical signal. The system also includes a reflector coupled to the waveguide photodetector and which is to reject frequencies outside of the frequency band of interest and to reflect the frequency band of interest back into the waveguide photodetector.

Abstract translation: 一个示例包括光电检测器系统。 该系统包括波导光电检测器，其中提供包括感兴趣频带的输入光信号，并从输入光信号中吸收输入光信号，以产生表示输入光信号强度的输出信号。 该系统还包括耦合到波导光电检测器的反射器，其用于抑制感兴趣的频带之外的频率并将感兴趣的频带反射回到波导光电检测器中。