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    TUNABLE HYBRID III-V/IV LASER SENSOR SYSTEM-ON-A CHIP FOR REAL-TIME MONITORING OF A BLOOD CONSTITUENT CONCENTRATION LEVEL
    2.
    发明申请
    TUNABLE HYBRID III-V/IV LASER SENSOR SYSTEM-ON-A CHIP FOR REAL-TIME MONITORING OF A BLOOD CONSTITUENT CONCENTRATION LEVEL 有权

    公开(公告)号：US20230036048A1

    公开(公告)日：2023-02-02

    申请号：US17887974

    申请日：2022-08-15

    Applicant: Brolis Sensor Technology, UAB ,  Universiteit Gent ,  IMEC VZW

    Inventor： Augustinas Vizbaras ,  Kristijonas Vizbaras ,  Ieva Simonyte ,  Günther Roelkens

    IPC: A61B5/1455 ,  G01N21/39

    Abstract: A spectroscopic laser sensor based on hybrid III-V/IV system-on-a-chip technology. The laser sensor is configured to either (i) be used with a fiber-optic probe connected to an intravenous/intra-arterial optical catheter for direct invasive blood analyte concentration level measurement or (ii) be used to measure blood analyte concentration level non-invasively through an optical interface attached, e.g., to the skin or fingernail bed of a human. The sensor includes a III-V gain-chip, e.g., an AIGalnAsSb/GaSb based gain-chip, and a photonic integrated circuit, with laser wavelength filtering, laser wavelength tuning, laser wavelength monitoring, laser signal monitoring and signal output sections realized on a chip by combining IV-based semiconductor substrates and flip-chip AIGal-nAsSb/GaSb based photodetectors and embedded electronics for signal processing. Embodiments of the invention may be applied for real-time monitoring of critical blood analyte concentration levels such as lactates, urea, glucose, ammonia, albumin, etc.

    Wavelength determination for widely tunable lasers and laser systems thereof
    3.
    发明授权
    Wavelength determination for widely tunable lasers and laser systems thereof 有权

    公开(公告)号：US11177630B2

    公开(公告)日：2021-11-16

    申请号：US16965867

    申请日：2019-01-31

    Applicant: Brolis Sensor Technology, UAB

    Inventor： Augustinas Vizbaras ,  Ieva Simonyte ,  Andreas De Groote ,  Kristijonas Vizbaras

    IPC: G01J3/30 ,  H01S5/0687 ,  G01N21/39 ,  H01S5/14 ,  H01S5/30

    Abstract: Methods for wavelength determination of widely tunable lasers and systems thereof may be implemented with solid-state laser based photonic systems based on photonic integrated circuit technology as well as discrete table top systems such as widely-tunable external cavity lasers and systems. The methods allow integrated wavelength control enabling immediate system wavelength calibration without the need for external wavelength monitoring instruments. Wavelength determination is achieved using a monolithic solid-state based optical cavity with a well-defined transmission or reflection function acting as a wavelength etalon. The solid-state etalon may be used with a wavelength shift tracking component, e.g., a non-balanced interferometer, to calibrate the entire laser emission tuning curve within one wavelength sweep. The method is particularly useful for integrated photonic systems based on Vernier-filter mechanism where the starting wavelength is not known a-priori, or for compact widely tunable external cavity lasers eliminating the need for calibration of wavelength via external instruments.

    TUNABLE HYBRID III-V/IV LASER SENSOR SYSTEM-ON-A CHIP FOR REAL-TIME MONITORING OF A BLOOD CONSTITUENT CONCENTRATION LEVEL
    5.
    发明申请
    TUNABLE HYBRID III-V/IV LASER SENSOR SYSTEM-ON-A CHIP FOR REAL-TIME MONITORING OF A BLOOD CONSTITUENT CONCENTRATION LEVEL 有权

    公开(公告)号：US20230047997A1

    公开(公告)日：2023-02-16

    申请号：US17887981

    申请日：2022-08-15

    Applicant: Brolis Sensor Technology, UAB ,  Universiteit Gent ,  IMEC VZW

    Inventor： Augustinas Vizbaras ,  Kristijonas Vizbaras ,  Ieva Simonyte ,  Günther Roelkens

    IPC: A61B5/1455 ,  G01N21/39

    Abstract: A spectroscopic laser sensor based on hybrid lll-V/IV system-on-a-chip technology. The laser sensor is configured to either (i) be used with a fiber-optic probe connected to an intravenous/intra-arterial optical catheter for direct invasive blood analyte concentration level measurement or (ii) be used to measure blood analyte concentration level non-invasively through an optical interface attached, e.g., to the skin or fingernail bed of a human. The sensor includes a lll-V gain-chip, e.g., an AIGalnAsSb/GaSb based gain-chip, and a photonic integrated circuit, with laser wavelength filtering, laser wavelength tuning, laser wavelength monitoring, laser signal monitoring and signal output sections realized on a chip by combining IV-based semiconductor substrates and flip-chip AIGalnAsSb/GaSb based photodetectors and embedded electronics for signal processing. Embodiments of the invention may be applied for real-time monitoring of critical blood analyte concentration levels such as lactates, urea, glucose, ammonia, albumin, etc.

    OPTOELECTRONIC DEVICES WITH TUNABLE OPTICAL MODE AND CARRIER DISTRIBUTION IN THE WAVEGUIDES
    7.
    发明公开
    OPTOELECTRONIC DEVICES WITH TUNABLE OPTICAL MODE AND CARRIER DISTRIBUTION IN THE WAVEGUIDES 审中-公开

    公开(公告)号：US20230170672A1

    公开(公告)日：2023-06-01

    申请号：US17921193

    申请日：2021-05-25

    Applicant: Brolis Sensor Technology, UAB

    Inventor： Kristijonas Vizbaras

    IPC: H01S5/20 ,  H01S5/02255 ,  H01S5/22 ,  H01S5/065 ,  H01S5/343 ,  H01S5/06

    CPC classification number: H01S5/2054 ,  H01S5/02255 ,  H01S5/22 ,  H01S5/065 ,  H01S5/34346 ,  H01S5/0614 ,  H01S2304/02

    Abstract: Solid-state optical devices (10) enable tuning of an electrically tunable depletion region (200) to reduce and block lateral (in-junction) carrier spreading. This capability reduces the negative effects of gain-guiding in the junction plane and reduces an astigmatism of an emitted light beam. The tunable depletion region is created by forming a highly resistive Schottky contact (105, 110) or metal-insulator-semiconductor (MIS) structure (205, 210) next to a waveguide (optical mode propagation) and current injection region (215), where lateral spread due to diffusion is expected. The depletion region area is tuned by applying a bias to the highly resistive Schottky contact or the MIS contact structure. Such contacts or similar lossy structures reduce in-junction plane gain-guiding also when unbiased by creating additional optical loss for the mode, thus reducing the effective carrier density participating in light generation, thereby reducing astigmatism.

    Wavelength determination for widely tunable lasers and laser systems thereof
    8.
    发明授权
    Wavelength determination for widely tunable lasers and laser systems thereof 有权

    公开(公告)号：US11201453B2

    公开(公告)日：2021-12-14

    申请号：US17370668

    申请日：2021-07-08

    Applicant: Brolis Sensor Technology, UAB

    Inventor： Augustinas Vizbaras ,  Ieva Simonyte ,  Andreas De Groote ,  Kristijonas Vizbaras

    IPC: G01J3/30 ,  H01S5/0687 ,  G01N21/39 ,  H01S5/14 ,  H01S5/30

    Abstract: Methods for wavelength determination of widely tunable lasers and systems thereof may be implemented with solid-state laser based photonic systems based on photonic integrated circuit technology as well as discrete table top systems such as widely-tunable external cavity lasers and systems. The methods allow integrated wavelength control enabling immediate system wavelength calibration without the need for external wavelength monitoring instruments. Wavelength determination is achieved using a monolithic solid-state based optical cavity with a well-defined transmission or reflection function acting as a wavelength etalon. The solid-state etalon may be used with a wavelength shift tracking component, e.g., a non-balanced interferometer, to calibrate the entire laser emission tuning curve within one wavelength sweep. The method is particularly useful for integrated photonic systems based on Vernier-filter mechanism where the starting wavelength is not known a-priori, or for compact widely tunable external cavity lasers eliminating the need for calibration of wavelength via external instruments.

    TUNABLE HYBRID III-V/ IV LASER SENSOR SYSTEM-ON-A-CHIP FOR REAL-TIME MONITORING OF A BLOOD CONSTITUENT CONCENTRATION LEVEL
    9.
    发明申请
    TUNABLE HYBRID III-V/ IV LASER SENSOR SYSTEM-ON-A-CHIP FOR REAL-TIME MONITORING OF A BLOOD CONSTITUENT CONCENTRATION LEVEL 有权

    公开(公告)号：US20210353183A1

    公开(公告)日：2021-11-18

    申请号：US17369517

    申请日：2021-07-07

    Applicant: Brolis Sensor Technology, UAB ,  Universiteit Gent ,  IMEC VZW

    Inventor： Augustinas Vizbaras ,  Kristijonas Vizbaras ,  Ieva Simonyte ,  Günther Roelkens

    IPC: A61B5/1455 ,  G01N21/39

    Abstract: A spectroscopic laser sensor based on hybrid III-V/IV system-on-a-chip technology. The laser sensor is configured to either (i) be used with a fiber-optic probe connected to an intravenous/intra-arterial optical catheter for direct invasive blood analyte concentration level measurement or (ii) be used to measure blood analyte concentration level non-invasively through an optical interface attached, e.g., to the skin or fingernail bed of a human. The sensor includes a III-V gain-chip, e.g., an AlGaInAsSb/GaSb based gain-chip and a photonic integrated circuit, with laser wavelength filtering, laser wavelength tuning, laser wavelength monitoring, laser signal monitoring and signal output sections realized on a chip by combining IV-based semiconductor substrates and flip-chip AlGaInAsSb/GaSb based photodetectors and embedded electronics for signal processing. Embodiments of the invention may be applied for real-time monitoring of critical blood analyte concentration levels such as lactates, urea, glucose, ammonia, albumin, etc.

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