公开(公告)号：US20210356672A1

公开(公告)日：2021-11-18

申请号：US17223298

申请日：2021-04-06

Applicant: Hewlett Packard Enterprise Development LP

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

IPC: G02B6/293 ,  G02B6/122 ,  G02B6/12 ,  G02F1/225

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.

公开(公告)号：US11088244B2

公开(公告)日：2021-08-10

申请号：US16082268

申请日：2016-03-30

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Di Liang

IPC: H01L29/06 ,  H01L21/02 ,  H01L21/764 ,  H01L21/762 ,  H01L21/033 ,  H01L21/20 ,  H01L21/768

Abstract: Examples herein relate to devices having substrates with selective airgap regions for mitigating defects resulting from heteroepitaxial growth of device materials. An example device may include a first semiconductor layer disposed on a substrate. The first semiconductor layer may have a window cut through a face, where etching a selective airgap region on the substrate is enabled via the window. A second semiconductor layer may be heteroepitaxially grown on the face of the first semiconductor layer so that at least a portion of the second semiconductor layer is aligned over the selective air gap region.

公开(公告)号：US11029476B2

公开(公告)日：2021-06-08

申请号：US16582907

申请日：2019-09-25

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Di Liang ,  Zhixin Liu

IPC: G02B6/43 ,  G02B6/42 ,  H01S5/10 ,  H01S5/026 ,  H01S5/065 ,  G02B6/293 ,  H04B10/50 ,  H04B10/67 ,  H01S5/40 ,  H04J14/02

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 configured to emit light having different wavelengths, a waveguide, and an optical coupler configured to couple the emitted light from the first optical source to the waveguide. The optical transmitter further includes an array of two or more second optical sources coupled to the waveguide, each of the two or more second optical sources configured to be injection locked to a different respective wavelength of the emitted light transmitted via the waveguide from the first optical source. In some implementations, the first optical source is a master comb laser and the two or more second optical sources are slave ring lasers.

公开(公告)号：US20210083138A1

公开(公告)日：2021-03-18

申请号：US16949723

申请日：2020-11-12

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Xiaoge Zeng ,  Zhihong Huang ,  Di Liang

IPC: H01L31/107 ,  G01J1/44 ,  H01L31/18

Abstract: A three-terminal avalanche photodiode provides a first controllable voltage drop across a light absorbing region and a second, independently controllable, voltage drop across a photocurrent amplifying region. The absorbing region may also have a different composition from the amplifying region, allowing further independent optimization of the two functional regions. An insulating layer blocks leakage paths, redirecting photocurrent toward the region(s) of highest avalanche gain. The resulting high-gain, low-bias avalanche photodiodes may be fabricated in integrated optical circuits using commercial CMOS processes, operated by power supplies common to mature computer architecture, and used for optical interconnects, light sensing, and other applications.

公开(公告)号：US20210036481A1

公开(公告)日：2021-02-04

申请号：US16527352

申请日：2019-07-31

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Terrel Morris ,  Di Liang ,  Raymond G. Beausoleil ,  Ashkan Seyedi

IPC: H01S3/081 ,  H01S5/10

Abstract: Processes and apparatuses described herein provide for an efficient cyclical fiber-optic connection between a source component and multiple destination components in a computing environment. A comb laser generates a laser signal that includes laser light of a first frequency that is red-shifted from a carrier frequency. The comb laser concurrently transmits the laser signal to four ring resonators via an optical waveguide. Three of the ring resonators are initially configured for optical resonance at a second frequency that is blue-shifted from the carrier frequency, while one of the ring resonators is initially configured for optical resonance at the first frequency. The laser signal is modulated to communicate data to a first target location associated with the ring resonator that is initially configured for optical resonance at the first frequency.

公开(公告)号：US20200350991A1

公开(公告)日：2020-11-05

申请号：US16399176

申请日：2019-04-30

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Thomas Van Vaerenbergh ,  Raymond G. Beausoleil ,  Kevin B. Leigh ,  Di Liang ,  Terrel Morris ,  Paolo Faraboschi

IPC: H04B10/25 ,  H04J14/02 ,  G02B6/42 ,  G02F1/01 ,  H04B10/50 ,  H04B10/66

Abstract: Examples herein relate to optical systems. In particular, implementations herein relate to an optical system including a bidirectional optical link such as an optical fiber. The optical system includes first and second optical modules coupled to opposing ends of the optical fiber. The first optical module is configured to transmit optical signals across the optical fiber in a first direction and the second optical module is configured to transmit optical signals across the optical fiber in a second direction opposite the first direction. Each of the first and second optical modules includes a multi-wavelength optical source configured to emit light. Respective channel spacing of the multi-wavelength optical sources of the first and second optical modules are offset from each other such that the respective wavelengths of the emitted light transmitted across the optical fiber from the first and second optical sources do not overlap.

公开(公告)号：US20200274019A1

公开(公告)日：2020-08-27

申请号：US16283224

申请日：2019-02-22

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Xiaoge Zeng ,  Zhihong Huang ,  Di Liang

IPC: H01L31/112 ,  H01L31/0224 ,  H01L31/18 ,  H01L31/02

Abstract: A three-terminal avalanche photodiode provides a first controllable voltage drop across a light absorbing region and a second, independently controllable, voltage drop across a photocurrent amplifying region. The compositions of the absorbing region and the amplifying region may be optimized independently of each other. In the amplifying region, p-doped and n-doped structures are offset from each other both horizontally and vertically. Directly applying a voltage across a controlled region of the photocurrent path increases avalanche gain by shaping the electric field to overlap the photocurrent density. The resulting high-gain, low-bias avalanche photodiodes may be fabricated in integrated optical circuits using commercial CMOS processes, operated by power supplies common to mature computer architecture, and used for optical interconnects, light sensing, and other applications.

公开(公告)号：US10680408B2

公开(公告)日：2020-06-09

申请号：US16108399

申请日：2018-08-22

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Geza Kurczveil ,  Chong Zhang ,  Di Liang ,  Raymond G. Beausoleil

IPC: H01S5/10 ,  H01S5/50 ,  H01S5/34 ,  H01S5/343 ,  H01S5/065 ,  H01S5/14 ,  H01S5/022

Abstract: A quantum dot comb laser includes a body defining a lasing cavity and an extension defining an external cavity, the FSR of the lasing cavity being an inverse of an integer multiple of the FSR of the external cavity.

公开(公告)号：US20200067273A1

公开(公告)日：2020-02-27

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: H01S5/10 ,  H01S5/34 ,  H01S5/065 ,  H01S5/06 ,  H01S5/22 ,  H01S5/02

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.

公开(公告)号：US20200028323A1

公开(公告)日：2020-01-23

申请号：US16489495

申请日：2017-02-28

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Geza Kurczveil ,  Di Liang ,  Raymond C. Beausoleil

IPC: H01S5/10 ,  H01S5/02 ,  H01S5/34 ,  G02B6/122 ,  G02B6/12

Abstract: Examples disclosed herein relate to quantum-dot (QD) photonics. In accordance with some of the examples disclosed herein, a QD semiconductor optical amplifier (SOA) may include a silicon substrate and a QD layer above the silicon substrate. The QD layer may include an active gain region to amplify a lasing mode received from an optical signal generator. The QD layer may have a gain recovery time such that the active gain region amplifies the received lasing mode without pattern effects. A waveguide may be included in an upper silicon layer of the silicon substrate. The waveguide may include a mode converter to facilitate optical coupling of the received lasing mode between the QD layer and the waveguide.