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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
Inventor： Omar Alkhazragi , Mohamed-Slim Alouini , Osama Amin , Seifallah Jardak , Boon Siew Ooi , Basem Shihada
CPC classification number: H04B13/02
Abstract: 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
Inventor： Frode Hveding , Islam Ashry , Mao Yuan , Mohd Sharizal Bin Alias , Boon Siew Ooi , Muhammad Arsalan
CPC classification number: G01H9/004 , G01D5/35354 , G01D5/35361 , G01V1/226
Abstract: 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
Inventor： Boon Siew Ooi , Abdul Majid Mohammed , Rami Afandy , Ahmed Aljabr
CPC classification number: H01S5/343 , H01S5/3201 , H01S5/34326 , H01S5/34333 , H01S2304/04
Abstract: 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.
Abstract translation: 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：US11956016B2
公开(公告)日：2024-04-09
申请号：US17914039
申请日：2021-03-08
Inventor： Boon Siew Ooi , Islam Ashry , Yuan Mao
IPC: H04B10/00 , G02B6/02 , H04B10/2581 , H04J14/00
CPC classification number: H04B10/2581 , G02B6/02042
Abstract: A hybrid sensing-communication system includes a multicore optical fiber that includes first and second cores, a first communication device optically coupled to a first end of the first core of the multicore optical fiber, a second communication device optically coupled to a second end of the first core of the multicore optical fiber, a first sensing device optically coupled to a first end of the second core of the multicore optical fiber, and a second sensing device optically coupled to a second end of the second core of the multicore optical fiber. The first and second communication devices exclusively exchange communication data along the first core, the first and second sensing devices exclusively exchange sensing data along the second core, and the communication data is different from the sensing data.
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公开(公告)号：US11624681B2
公开(公告)日：2023-04-11
申请号：US16744918
申请日：2020-01-16
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.
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Patent Agency Ranking
公开(公告)号：US11575442B2
公开(公告)日：2023-02-07
申请号：US17423233
申请日：2020-02-19
Inventor： Boon Siew Ooi , Chun Hong Kang , Tien Khee Ng , Osman M. Bakr
IPC: H04B10/291 , H04B10/116 , H04B10/294
Abstract: A plastic optical fiber communication system includes a light source that emits a first signal having a first wavelength in a visible light spectrum, the first signal being encoded with information at a high data-rate of 0.1 to 10 Gbit/s; a pump laser system that emits a pump laser light having a second wavelength, different from the first wavelength; a perovskite-doped optical fiber excited by the pump laser light to generate an amplified spontaneous emission spectrum that encompasses the first wavelength so as to receive and amplify the first signal for generating an amplified output signal having the first wavelength; and a photodetector optically coupled to the perovskite-doped optical fiber, and configured to receive the amplified output signal at the high data-rate of 0.1 to 10 Gbit/s. The amplified output signal is encoded with the information.
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公开(公告)号：US11047816B2
公开(公告)日：2021-06-29
申请号：US16068012
申请日：2017-01-18
Inventor： Rami Tarek El Afandy , Boon Siew Ooi
Abstract: A method for measuring thermal diffusivity/conductivity of a microscale sample includes placing a metallic disk atop the sample, and disposing a nanomembrane over the sample and over the metallic disk so that the nanomembrane, so that the metallic disk, the nanomembrane and the sample are in thermal equilibrium with one another. A laser beam is directed to fall onto the nanomembrane over the sample, while a radiation sensor is operated to detect photoluminescent radiation emitted by the nanomembrane in response to the laser beam. A spectral shift in the detected photoluminescent radiation emitted by the nanomembrane is determined, and thermal diffusivity/conductivity is calculated from the determined spectral shift of the photoluminescence.
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公开(公告)号：US20200284647A1
公开(公告)日：2020-09-10
申请号：US16295212
申请日：2019-03-07
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.
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公开(公告)号：US10665451B2
公开(公告)日：2020-05-26
申请号：US15753578
申请日：2016-10-07
Inventor： Boon Siew Ooi , Chao Zhao , Tien Khee Ng
Abstract: Elemental or compound semiconductors on metal substrates and methods of growing them are provided. The methods can include the steps of: (i) providing a metal substrate; (ii) adding an interlayer on a surface of the metal substrate, and (iii) growing semiconductor nanowires on the interlayer using a semiconductor epitaxy growth system to form the elemental or compound semiconductor. The method can include direct growth of high quality group III-V and group III-N based materials in the form of nanowires and nanowires-based devices on metal substrates. The nanowires on all-metal scheme greatly simplifies the fabrication process of nanowires based high power light emitters.
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公开(公告)号：US12203895B2
公开(公告)日：2025-01-21
申请号：US17603685
申请日：2020-04-20
Inventor： Boon Siew Ooi , Islam Ashry , Yuan Mao
Abstract: A method for determining tree infestation includes placing an optical fiber around a trunk of a tree; recording with a distributed acoustic sensor (DAS) box a Rayleigh signal reflected from the tree, along the optical fiber; processing the Rayleigh signal to obtain a processed signal; calculating a signal-to-noise ratio (SNR) of the processed signal for the tree; and comparing the SNR to a threshold value and counting an alarm if the SNR is larger than the threshold value. The SNR is defined as a ratio between (1) a maximum value of a processed signal and (2) a minimum value of the processed signal.
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