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公开(公告)号：US20200158506A1
公开(公告)日：2020-05-21
申请号：US16690667
申请日：2019-11-21
Applicant: IMEC VZW
Inventor： Veronique Rochus , Roelof Jansen , Benedetto Troia
IPC: G01C19/66
Abstract: An optical gyroscope and a method for measuring an angular velocity of rotation are described. A closed-path optical cavity is configured for receiving at least a first optical signal circulating as at least one cavity mode of pre-determined orientation (inside the optical cavity. An extractor in optical communication with the optical cavity is configured for extracting a fraction of at least the circulating first optical signal from the optical cavity, wherein an amplitude of the extracted fraction increases when a resonance condition for the optical cavity in optical communication with the extractor is approached. A readout channel included in the optical gyroscope comprises an interferometric device adapted to spectrally modify the extracted fraction so as to produce a spectral Vernier effect. A difference between free spectral ranges of the interferometric device and the optical cavity is larger than the associated spectral widths. Readout detectors are included in the readout channel for detecting optical power levels of the spectrally modified optical signal, based on which the angular velocity is determined.
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公开(公告)号：US10520677B2
公开(公告)日：2019-12-31
申请号：US16231452
申请日：2018-12-22
Applicant: IMEC VZW
Inventor： Bruno Figeys , Veronique Rochus , Roelof Jansen , Xavier Rottenberg
Abstract: An integrated photonic device comprises: an input waveguide configured to extend in an input plane, and an output waveguide configured to extend in an output plane, wherein the output plane is parallel to or contained within the input plane; an input coupler optically coupled to the input waveguide, wherein the input coupler is configured to redirect a light signal out of the input waveguide and the input plane; a light property modifier configured to receive the light signal from the input coupler and reflect the light signal towards the output plane, wherein the light property modifier is configured to selectively adjust an optical path length of the light signal; and an output coupler optically coupled to the output waveguide, wherein the output coupler is configured to receive the reflected light signal from the light property modifier and redirect the light signal into the output waveguide and the output plane.
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公开(公告)号：US11372158B2
公开(公告)日：2022-06-28
申请号：US16703242
申请日：2019-12-04
Applicant: IMEC VZW , KATHOLIEKE UNIVERSITEIT LEUVEN
Inventor： Wouter Jan Westerveld , Veronique Rochus , Simone Severi , Roelof Jansen
Abstract: A waveguide for guiding an electro-magnetic wave comprises: a first waveguide part; and a second waveguide part; wherein the first waveguide part has a first width in a first direction (Y) perpendicular to the direction of propagation of the electro-magnetic wave and the second waveguide part has a second width in the first direction (Y), wherein the second width is larger than the first width; and wherein the first and the second waveguide parts are spaced apart by a gap in a second direction (Z) perpendicular to the first and second planes in which the waveguide parts are formed, wherein the gap has a size which is sufficiently small such that the first and second waveguide parts unitely form a single waveguide for guiding the electro-magnetic wave. The waveguide may be used in numerous applications, such as in a photonic integrated circuit, in a sensor or in an actuator.
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公开(公告)号：US10775254B2
公开(公告)日：2020-09-15
申请号：US16006835
申请日：2018-06-12
Applicant: IMEC VZW
Inventor： Roelof Jansen , Xavier Rottenberg , Veronique Rochus
Abstract: A force sensing device comprises: a membrane (120), which is configured to deform upon receiving a force; a first Mach Zehnder-type interferometer device (110); a second Mach Zehnder-type interferometer device (130), wherein a first measurement propagation path (114) of the first Mach Zehnder-type interferometer device (110) and a second measurement propagation path (134) of the second Mach Zehnder-type interferometer device (130) are arranged on or in the membrane (120), and wherein the first measurement propagation path (114) and the second measurement propagation path (134) are differently sensitive to applied force on the membrane (120).
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公开(公告)号：US11822118B2
公开(公告)日：2023-11-21
申请号：US17851647
申请日：2022-06-28
Applicant: IMEC VZW , Universiteit Gent
Inventor： Wim Bogaerts , Wouter Jan Westerveld , Roelof Jansen
CPC classification number: G02B6/12019 , G02B6/4215
Abstract: An integrated photonic device for wavelength division multiplexing comprises: a wavelength-splitting/combining component configured to be re-used for both splitting a single signal to be split, wherein the signal to be split comprises plural wavelengths, to plural split signals, wherein each of the plural split signals is related to a unique wavelength band, and combining plural signals to be combined, wherein each of the plural signals to be combined is related to a unique wavelength band, to a single combined signal, wherein the wavelength-splitting/combining component comprises at least one output channel for providing an output signal and at least one response channel for receiving a response input signal from a light interaction induced by the output signal, wherein the output channel and the response channel are connected to different ports of the wavelength-splitting/combining component.
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Patent Agency Ranking
公开(公告)号：US11320303B2
公开(公告)日：2022-05-03
申请号：US16840269
申请日：2020-04-03
Applicant: IMEC VZW , KATHOLIEKE UNIVERSITEIT LEUVEN
Inventor： Wouter Jan Westerveld , Roelof Jansen , Xavier Rottenberg , Veronique Rochus
IPC: G01H9/00
Abstract: Embodiments relate to a sensor structure for an acoustical pressure sensor and an opto-mechanical sensor and system that may be used for detecting acoustical pressure waves. Embodiments of a sensor structure for an acoustical pressure sensor include an optical waveguide closed-loop resonator and a plurality of sensor elements. The individual sensor elements of the plurality of sensor elements are configured to be affected by an acoustical pressure wave such that a physical property of the individual sensor element is changed. The optical waveguide closed-loop resonator is arranged at the plurality of sensor elements and associated with each of the individual sensor elements such that a resonance frequency of the optical waveguide closed-loop resonator is shifted due to the affected physical properties of all individual sensor elements. The sensor structure provides a high sensitivity from each sensor element, which is advantageous in e.g. ultrasonic imaging, such as photo-acoustic imaging where the signals typically are low.
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公开(公告)号：US20210063840A1
公开(公告)日：2021-03-04
申请号：US16998551
申请日：2020-08-20
Applicant: IMEC VZW
Inventor： Bruno Figeys , Jon Kjellman , Xavier Rottenberg , Roelof Jansen
Abstract: A phase difference measurement device comprises at least two optical waveguides arranged in parallel in a first plane. Each optical waveguide comprises a proximal portion and a distal portion. The proximal portion of at least one of the optical waveguides comprises a phase-shifting device configured to induce a phase shift of a light wave being transmitted in the phase difference measurement device. The device further comprises at least one phase interrogator device arranged in the first plane between two neighboring optical waveguides of the optical waveguides. The phase interrogator device is configured to couple light from the two neighboring optical waveguides to interfere in the phase interrogator to generate an interference light wave. At least one photodetector is arranged for detecting the interference light wave. The photodetector is arranged in a second plane other than the first plane.
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公开(公告)号：US10921125B2
公开(公告)日：2021-02-16
申请号：US16690667
申请日：2019-11-21
Applicant: IMEC VZW
Inventor： Veronique Rochus , Roelof Jansen , Benedetto Troia
IPC: G01C19/66
Abstract: An optical gyroscope and a method for measuring an angular velocity of rotation are described. A closed-path optical cavity is configured for receiving at least a first optical signal circulating as at least one cavity mode of pre-determined orientation (inside the optical cavity. An extractor in optical communication with the optical cavity is configured for extracting a fraction of at least the circulating first optical signal from the optical cavity, wherein an amplitude of the extracted fraction increases when a resonance condition for the optical cavity in optical communication with the extractor is approached. A readout channel included in the optical gyroscope comprises an interferometric device adapted to spectrally modify the extracted fraction so as to produce a spectral Vernier effect. A difference between free spectral ranges of the interferometric device and the optical cavity is larger than the associated spectral widths. Readout detectors are included in the readout channel for detecting optical power levels of the spectrally modified optical signal, based on which the angular velocity is determined.
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公开(公告)号：US20240210318A1
公开(公告)日：2024-06-27
申请号：US18516527
申请日：2023-11-21
Applicant: IMEC VZW
Inventor： Roelof Jansen , Jeonghwan Song
IPC: G01N21/64 , G01N33/542
CPC classification number: G01N21/6428 , G01N33/542
Abstract: Example embodiments relate to alignment-tolerant photonic sensing systems. An example sensing system includes an illumination module for delivery of a light beam. The sensing system also includes a cartridge that includes a photonic sensor chip having a length axis and a width axis. The photonic sensor chip includes a plurality of grating couplers in a first areal portion of the photonic sensor chip. The photonic sensor chip also includes a plurality of sensing sites. Additionally, the photonic sensor chip includes waveguides connecting each grating coupler to a respective sensing site or group of sensing sites of the plurality of sensing sites. Further, the sensing system includes a cartridge holder for releasably receiving and locking the cartridge into a sensing position. The photonic sensor chip is aligned relative to the illumination module up to permitted alignment tolerances when the cartridge is locked into the sensing position.
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公开(公告)号：US20220082696A1
公开(公告)日：2022-03-17
申请号：US17476350
申请日：2021-09-15
Applicant: IMEC vzw
Inventor： Jon Kjellman , Marcus Dahlem , Xavier Rottenberg , Roelof Jansen
IPC: G01S17/89 , G01S7/481 , G01S17/06 , G01S17/58 , G01S7/4912
Abstract: A system for determining a range of a scene is provided. In one aspect, the system includes an optical source to generate an input signal and a first optical coupler to tap a predetermined portion of the input signal as a local oscillator signal. The system includes an emitting unit to transmit a remaining portion of the input signal as an output signal onto the scene, and an imaging unit to receive return signals from the scene. The imaging unit includes an array of detectors directly coupled to one or more lenses. A position of each detector is associated with a unique direction of the return signals. Also, the lenses may receive and direct the return signals onto the detectors. Further, each detector of the array is configured to mix the local oscillator signal with a corresponding return signal thereby generating a RF beat signal that is further processed to determine the range of the scene.
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