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公开(公告)号：US11784722B2
公开(公告)日：2023-10-10
申请号：US17801594
申请日：2021-02-22
发明人： Omar Alkhazragi , Mohamed-Slim Alouini , Osama Amin , Seifallah Jardak , Boon Siew Ooi , Basem Shihada
CPC分类号： H04B13/02
摘要： A communication system includes a first communication gateway arranged proximate to a surface of a body of water and an underwater communication gateway. The underwater communication gateway is configured to receive data from a first underwater communication device using radio frequencies and the ethernet data link layer protocol, to convert the data received from the first underwater communication device from the ethernet data link layer protocol to the second data link layer protocol, and to transmit, using optical radiation and the second data link layer protocol, the data converted by the underwater communication gateway to the first communication gateway. The first communication gateway is configured to convert the data transmitted by the underwater communication gateway from the second data link layer protocol to the ethernet data link layer protocol, and to transmit, using the ethernet data link layer protocol, the data converted by the first communication device to a further communication device.
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公开(公告)号：US11698288B2
公开(公告)日：2023-07-11
申请号：US16190302
申请日：2018-11-14
发明人： Frode Hveding , Islam Ashry , Mao Yuan , Mohd Sharizal Bin Alias , Boon Siew Ooi , Muhammad Arsalan
CPC分类号： G01H9/004 , G01D5/35354 , G01D5/35361 , G01V1/226
摘要： The subject matter of this specification can be embodied in, among other things, a method for remotely sensing vibration includes transmitting a collection of optical pulses through an optical fiber at a predetermined frequency, detecting a collection of backscattered Rayleigh traces from the optical fiber based on a vibration of the optical fiber at a vibration frequency at a location along the optical fiber, determining a normalized differential trace based on the collection of Rayleigh traces, determining, based on the normalized differential trace, the location in the optical fiber of the vibration, and determining, based on the raw Rayleigh traces, the vibration frequency.
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3.发明申请CONTROLLING THE EMISSION WAVELENGTH IN GROUP III-V SEMICONDUCTOR LASER DIODES 有权控制III-V族半导体激光二极管的发射波长公开(公告)号：US20160380409A1
公开(公告)日：2016-12-29
申请号：US15191826
申请日：2016-06-24
发明人： Boon Siew Ooi , Abdul Majid Mohammed , Rami Afandy , Ahmed Aljabr
CPC分类号： H01S5/343 , H01S5/3201 , H01S5/34326 , H01S5/34333 , H01S2304/04
摘要： Methods are provided for modifying the emission wavelength of a semiconductor quantum well laser diode, e.g. by blue shifting the emission wavelength. The methods can be applied to a variety of semiconductor quantum well laser diodes, e.g. group III-V semiconductor quantum wells. The group III-V semiconductor can include AlSb, AlAs, Aln, AlP, BN, GaSb, GaAs, GaN, GaP, InSb, InAs, InN, and InP, and group III-V ternary semiconductors alloys such as AlxGai.xAs. The methods can results in a blue shifting of about 20 meV to 350 meV, which can be used for example to make group III-V semiconductor quantum well laser diodes with an emission that is orange or yellow. Methods of making semiconductor quantum well laser diodes and semiconductor quantum well laser diodes made therefrom are also provided.
摘要翻译： 提供了用于修改半导体量子阱激光二极管的发射波长的方法，例如。 通过蓝色移动发射波长。 该方法可以应用于各种半导体量子阱激光二极管，例如， III-V族半导体量子阱。 III-V族半导体可以包括AlxBiAlAs，AlN，AlP，BN，GaSb，GaAs，GaN，GaP，InSb，InAs，InN和InP以及III-V族三元半导体合金，如AlxGai.xAs。 该方法可导致约20meV至350meV的蓝移，其可用于例如制备具有橙色或黄色的发射的III-V族半导体量子阱激光二极管。 还提供了制造半导体量子阱激光二极管和由其制成的半导体量子阱激光二极管的方法。
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公开(公告)号：US20240295669A1
公开(公告)日：2024-09-05
申请号：US18662537
申请日：2024-05-13
发明人： Frode Hveding , Islam Ashry , Mao Yuan , Mohd Bin Alias , Boon Siew Ooi , Muhammad Arsalan
摘要： 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.
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公开(公告)号：US11546056B2
公开(公告)日：2023-01-03
申请号：US17431465
申请日：2019-05-07
发明人： Boon Siew Ooi , Xiaobin Sun , Chao Shen , Tien Khee Ng
IPC分类号： H04B10/112 , H04B10/118 , H04B13/02
摘要： 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.
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公开(公告)号：US11209307B2
公开(公告)日：2021-12-28
申请号：US16832847
申请日：2020-03-27
发明人： Frode Hveding , Islam Ashry , Mao Yuan , Mohd Sharizal Bin Alias , Boon Siew Ooi , Muhammad Arsalan
IPC分类号： G01H9/00 , G01D5/353 , G01K11/3206 , G01N21/47 , G01K11/324
摘要： 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.
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公开(公告)号：US11127591B2
公开(公告)日：2021-09-21
申请号：US16090758
申请日：2017-05-09
申请人： King Abdullah University of Science and Technology , KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
发明人： Chao Zhao , Tien Khee Ng , Lain-Jong Li , Boon Siew Ooi , Ahmed Y. Alyameni , Munir M. Eldesouki
IPC分类号： H01L29/10 , H01L21/02 , H01L29/06 , H01L29/267 , H01L23/29
摘要： 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.
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公开(公告)号：US20210223139A1
公开(公告)日：2021-07-22
申请号：US16744918
申请日：2020-01-16
发明人： Frode Hveding , Islam Ashry , Mao Yuan , Boon Siew Ooi
IPC分类号： G01M11/00
摘要： 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.
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公开(公告)号：US10962408B2
公开(公告)日：2021-03-30
申请号：US16295212
申请日：2019-03-07
发明人： Frode Hveding , Islam Ashry , Mao Yuan , Mohd Sharizal Bin Alias , Boon Siew Ooi , Muhammad Arsalan
IPC分类号： G01H9/00
摘要： 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.
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公开(公告)号：US11979194B2
公开(公告)日：2024-05-07
申请号：US17422939
申请日：2020-02-19
发明人： Boon Siew Ooi , Chun Hong Kang , Tien Khee Ng
IPC分类号： H04B10/61 , F21V8/00 , G02B6/10 , G02B6/12 , H04B10/116
CPC分类号： H04B10/616 , G02B6/0003 , G02B6/102 , G02B6/12004 , H04B10/116 , G02B2006/12195
摘要： 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.
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