公开(公告)号：US20240295669A1

公开(公告)日：2024-09-05

申请号：US18662537

申请日：2024-05-13

Applicant: Saudi Arabian Oil Company ,  King Abdullah University of Science and Technology

Inventor： Frode Hveding ,  Islam Ashry ,  Mao Yuan ,  Mohd Bin Alias ,  Boon Siew Ooi ,  Muhammad Arsalan

IPC: G01V1/52 ,  E21B47/00 ,  G01D5/26 ,  G01V1/50 ,  G01V8/16

CPC classification number: G01V1/52 ,  E21B47/00 ,  G01D5/268 ,  G01V1/50 ,  G01V8/16

Abstract: The subject matter of this specification can be embodied in, among other things, a method for removing intermodal distortion that includes receiving a collection of distorted backscattered Rayleigh signals from a collection of modes of an optical fiber, where the collection of distorted backscattered Rayleigh signals are distorted by an intermodal coupling among the collection of modes, receiving a collection of distortion parameters that are descriptive of distortion effects of the intermodal coupling, and determining an undistorted backscattered Rayleigh signal based on the collection of distorted backscattered Rayleigh signals and the collection of distortion parameters.

公开(公告)号：US11546056B2

公开(公告)日：2023-01-03

申请号：US17431465

申请日：2019-05-07

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Boon Siew Ooi ,  Xiaobin Sun ,  Chao Shen ,  Tien Khee Ng

IPC: H04B10/112 ,  H04B10/118 ,  H04B13/02

Abstract: A method for transmitting information across a water-air interface with a ultraviolet (UV) beam, the method including emitting the UV beam in a first medium, with a first optical wireless communication device; measuring a scintillation index of the UV beam in a second medium, different from the first medium, at a second optical wireless communication device; selecting, based on a value of the scintillation index, a modulation scheme for the UV beam; and modulating the UV beam with the selected modulation scheme. The UV beam has a wavelength in a range of 100 to 400 nm.

公开(公告)号：US11209307B2

公开(公告)日：2021-12-28

申请号：US16832847

申请日：2020-03-27

Applicant: Saudi Arabian Oil Company ,  King Abdullah University of Science and Technology

Inventor： Frode Hveding ,  Islam Ashry ,  Mao Yuan ,  Mohd Sharizal Bin Alias ,  Boon Siew Ooi ,  Muhammad Arsalan

IPC: G01H9/00 ,  G01D5/353 ,  G01K11/3206 ,  G01N21/47 ,  G01K11/324

Abstract: The subject matter of this specification can be embodied in, among other things, a method that includes separating, from a few mode optical fiber, a collection of backscattered Rayleigh signals based on a vibration of the few mode optical fiber at a vibration frequency at a first location along the few mode optical fiber, separating, from the few mode optical fiber, a collection of backscattered Stokes Raman signals and Anti-Stokes Raman signals based on a temperature of the few mode optical fiber at a second location along the few mode optical fiber, detecting the separated Rayleigh signals and Raman signals, determining, based on detecting the collection of backscattered Rayleigh traces, at least one of the first location, the vibration frequency, and an amplitude of the vibration, and determining, based on the detecting the collection of backscattered Raman signals, the temperature at the second location.

公开(公告)号：US11127591B2

公开(公告)日：2021-09-21

申请号：US16090758

申请日：2017-05-09

Applicant: King Abdullah University of Science and Technology ,  KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY

Inventor： Chao Zhao ,  Tien Khee Ng ,  Lain-Jong Li ,  Boon Siew Ooi ,  Ahmed Y. Alyameni ,  Munir M. Eldesouki

IPC: H01L29/10 ,  H01L21/02 ,  H01L29/06 ,  H01L29/267 ,  H01L23/29

Abstract: Methods of direct growth of high quality group III-V and group III-N based materials and semiconductor device structures in the form of nanowires, planar thin film, and nanowires-based devices on metal substrates are presented. The present compound semiconductor all-metal scheme greatly simplifies the fabrication process of high power light emitters overcoming limited thermal and electrical conductivity of nanowires grown on silicon substrates and metal thin film in prior art. In an embodiment the methods include: (i) providing a metal substrate; (ii) forming a transition metal dichalcogenide (TMDC) layer on a surface of the metal substrate; and (iii) growing a semiconductor epilayer on the transition metal dichalcogenide layer using a semiconductor epitaxy growth system. In an embodiment, the semiconductor device structures can be compound semiconductors in contact with a layer of metal dichalcogenide, wherein the layer of metal dichalcogenide is in contact with a metal substrate.

公开(公告)号：US20210223139A1

公开(公告)日：2021-07-22

申请号：US16744918

申请日：2020-01-16

Applicant: Saudi Arabian Oil Company ,  King Abdullah University of Science and Technology

Inventor： Frode Hveding ,  Islam Ashry ,  Mao Yuan ,  Boon Siew Ooi

IPC: G01M11/00

Abstract: Systems and methods include a method for overcoming optical time domain reflectometry (OTDR) dead zone limitations by using a few-mode fiber (FMF). Optical pulses are transmitted by a transmitter of an OTDR system through a mode MUX/DEMUX into an FMF. Light signals directed by the FMF in a backward direction through the mode MUX/DEMUX are received by the OTDR system through N single-mode fiber (SMF) ports corresponding to N modes in the FMF. Light signals from N−1 dead-zone-free SMF ports are collected by the OTDR system. Losses are measured and faults are located in the FMF based at least on the light signals.

公开(公告)号：US10962408B2

公开(公告)日：2021-03-30

申请号：US16295212

申请日：2019-03-07

Applicant: Saudi Arabian Oil Company ,  King Abdullah University of Science and Technology

Inventor： Frode Hveding ,  Islam Ashry ,  Mao Yuan ,  Mohd Sharizal Bin Alias ,  Boon Siew Ooi ,  Muhammad Arsalan

IPC: G01H9/00

Abstract: Systems and methods include a number of optical pulses are transmitted by transmitting, by a distributed acoustic sensor (DAS), where the optical pulses are transmitted at an input port associated with a multimode fibers (MMF) used by the DAS, and where the fundamental mode of the MMF is excited. A number of backscattered Rayleigh signals are collected by the DAS. The Rayleigh signals are recorded as an output intensity profile. A position along the MMF that is subject to vibrations and corresponding vibration parameters are determined by analyzing the recorded output intensity profile.

公开(公告)号：US12259272B2

公开(公告)日：2025-03-25

申请号：US17913003

申请日：2021-03-09

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Islam Ashry ,  Boon Siew Ooi ,  Yuan Mao

IPC: G01H9/00 ,  G01D5/353 ,  G06N3/0464 ,  G06N3/048 ,  H04R23/00

Abstract: A fiber optic distributed acoustic sensing (DAS) system for detecting a red palm weevil (RPW) includes an optical fiber configured to be wrapped around a tree and a DAS box connected to the optical fiber. The DAS box includes a processing unit that is configured to receive a filtered Rayleigh signal reflected by the optical fiber, and run the filtered Rayleigh signal through a neural network system to determine a presence of the RPW in the tree.

公开(公告)号：US11979194B2

公开(公告)日：2024-05-07

申请号：US17422939

申请日：2020-02-19

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Boon Siew Ooi ,  Chun Hong Kang ,  Tien Khee Ng

IPC: H04B10/61 ,  F21V8/00 ,  G02B6/10 ,  G02B6/12 ,  H04B10/116

CPC classification number: H04B10/616 ,  G02B6/0003 ,  G02B6/102 ,  G02B6/12004 ,  H04B10/116 ,  G02B2006/12195

Abstract: A large-area, waveguide-based, high-speed ultraviolet and visible light photodetector system for optical wireless communication includes a substrate; plural, parallel, waveguides formed directly on the substrate and including a high quantum-yield wavelength-converting material of semiconductor nature; an optical coupling system optically connected to each one of the plural, parallel, waveguides; and a photodetector optically connected to the optical coupling system and configured to detect an outgoing light. The wavelength-converting material converts a first wavelength of an incoming light at high-speed, received by the plural, parallel, waveguides, into a second wavelength of the outgoing light. The first wavelength is different from the second wavelength, and the first and second wavelengths are between 200 and 800 nm.

公开(公告)号：US11754532B2

公开(公告)日：2023-09-12

申请号：US17050116

申请日：2019-04-24

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Boon Siew Ooi ,  Yuan Mao ,  Islam Ashry

IPC: G01N29/46 ,  G01N29/24 ,  G01H9/00 ,  G01N29/44 ,  G01N33/00 ,  A01M99/00 ,  G01N33/46

CPC classification number: G01N29/2418 ,  G01H9/004 ,  G01N29/4454 ,  G01N29/46 ,  G01N33/0098 ,  A01M99/00 ,  G01N33/46 ,  G01N2291/0238

Abstract: An optical fiber distributed acoustic sensor (DAS) system for detecting a red palm weevil and/or its larvae inside a tree. The system includes an optical fiber that is configured to be placed next to a tree; and a DAS box optically connected to the optical fiber and configured to receive a reflected light from the optical fiber. The DAS box includes electronics that extracts from the reflected light a frequency in a range of [400 Hz, 4 kHz], and sends a message indicating a presence of the red palm weevil and/or its larvae inside the tree.

公开(公告)号：US11750027B2

公开(公告)日：2023-09-05

申请号：US17715335

申请日：2022-04-07

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Boon Siew Ooi ,  Tien Khee Ng ,  Chun Hong Kang ,  Meiwei Kong ,  Yujian Guo

IPC: H02J50/00 ,  H04B10/40 ,  H04B13/02 ,  H02J50/30 ,  F03B13/10

CPC classification number: H02J50/001 ,  F03B13/10 ,  H02J50/30 ,  H04B10/40 ,  H04B13/02

Abstract: A free node to be deployed underwater for omnidirectional energy and data harvesting includes a housing that forms a sealed chamber; a wavelength-changing layer attached to an outside of the housing and configured to receive a first optical signal having a first wavelength range and to emit a second optical signal having a second wavelength range, different from the first wavelength range, wherein the first optical signal includes encoded data; a flexible solar cell wrapped around the housing, the flexible solar cell being configured to receive the second optical signal and generate an electrical signal; an energy storage module located in the chamber and configured to store electrical energy associated with the electrical signal; and a decoder located in the chamber and configured to receive the electrical signal and decode the encoded data. The first wavelength range is ultraviolet light and the second wavelength range is visible or infrared light.