Optical filter and spectrometer including the same

    公开(公告)号:US11914181B2

    公开(公告)日:2024-02-27

    申请号:US17132200

    申请日:2020-12-23

    CPC classification number: G02B5/288 G01J3/28 G02B5/201 G02B5/28

    Abstract: Provided are an optical filter and a spectrometer including the optical filter. The optical filter includes at least one first filter element having a first center wavelength of a first wavelength band, and at least one second filter element arranged on a same plane as the at least one first filter element, the at least one second filter element having a second center wavelength of a second wavelength band. The at least one first filter element includes a first bandpass filter including a plurality of first Bragg reflective layers and at least one first cavity provided between the plurality of first Bragg reflective layers, and a first multi-layer provided on the first bandpass filter, the first multi-layer having a center wavelength different than the first center wavelength of the first Bragg reflective layers in order to block light of a wavelength band other than the first wavelength band.

    SYSTEM ARCHITECTURE FOR IoT SPECTROSCOPY
    13.
    发明公开

    公开(公告)号:US20240064204A1

    公开(公告)日:2024-02-22

    申请号:US18260584

    申请日:2022-01-25

    Applicant: SENORICS GMBH

    Abstract: A system architecture for a measurement data processing system specifically designed under the aspect of application in an Internet of Things device is presented. The disclosed system is particularly well suited for application to spectroscopy. The measurement data processing system (1) comprises at least one measuring device (2), comprising an embedded operating system (22), accessing and being accessible by a remote instrument backend (3), and a user device with a user accessible application (51), accessing and being accessible by a remote application backend (6), wherein the instrument backend (3) and the application backend (6) are cloud-based, and wherein the instrument backend (3) and the application backend (6) are set up to make use of cloud computing resources to store and retrieve and process data.

    OPTICAL SPECTROMETER SYSTEM
    15.
    发明公开

    公开(公告)号:US20240044705A1

    公开(公告)日:2024-02-08

    申请号:US18258962

    申请日:2021-12-21

    CPC classification number: G01J3/28 G01J3/0218 G01J3/1895

    Abstract: A spectrometer system is described. The system comprises a signal input port and a pump input port, respective signal and pump dispersion fibers, a nonlinear optical fiber section, and an output dispersion fiber. The dispersion fibers are configured to apply predetermined spectral dispersion on light input associated with signal and pump inputs. The nonlinear optical fiber section is configured to receive dispersed signal and pump waves and enable nonlinear interaction between the signal and pump waves. The output dispersion fiber is configured to receive light resulting from said nonlinear interaction and apply predetermined dispersion to the received light, thereby providing output light having mapping between time and spectral components of the input signal. Wherein at least one of the signal input port and pump input port comprises temporal speckle generating unit configured to affect optical pulses passing through to induce temporal speckles within said optical pulses.

    On-premises calibrator system for optical modules

    公开(公告)号:US11788890B2

    公开(公告)日:2023-10-17

    申请号:US17752206

    申请日:2022-05-24

    Inventor: Randy Yousey

    CPC classification number: G01J3/28 G01J2003/283 G01J2003/2879

    Abstract: An optical wavelength calibrator is configured to be used on premises with instrumentation such as an optical spectrum analyzer. The on-premises calibrator includes both a fixed wavelength source and a tunable wavelength source, with a variable optical attenuator controlling the power level of a calibration beam provided as an output. A controller within the on-premises calibrator is used to generate the control signals for the various components in response to received external commands, typically via from an external GUI of the user's computer system. The controller is used in combination with the tunable wavelength source to provide a series of output calibration signals at different wavelengths, providing the ability to performance calibration across a desired spectral region and not just a single wavelength. The on-premises calibrator maintains real-time wavelength stability of the instrument to minimize down time when compared off-site extensive re-calibration services.

    A PLURALITY OF STRUCTURALLY IDENTICAL SPECTROMETERS AND A CALIBRATION METHOD THEREFOR

    公开(公告)号:US20230243741A1

    公开(公告)日:2023-08-03

    申请号:US18009764

    申请日:2021-06-08

    CPC classification number: G01N21/274 G01N21/359 G01J3/28

    Abstract: In accordance with a method for calibrating structurally identical spectrometers for constituent analysis, a multiplicity of samples are provided and concentrations of one constituent in the individual samples are measured using a reference measuring method. Spectra of the individual samples are measured using one spectrometer selected from the structurally identical spectrometers to determine a preliminary regression model. At least one spectrum is selected from the measured spectra and/or a mean value spectrum formed from the measured spectra. A multiplicity of error spectra are generated using a mathematical model of the structurally identical spectrometers. The individual error spectra are added in each case to the individual selected spectra to obtain simulated spectra. As a result, a resultant regression model is determined in which amplitude values of the measured spectra and selected simulated spectra form the independent variables and in which the reference measurement values form the dependent variable.

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