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

IPC: G02F1/29 ,  G02F1/225 ,  G01S7/481 ,  G01S17/88

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.

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.

公开(公告)号：US12130472B2

公开(公告)日：2024-10-29

申请号：US18067985

申请日：2022-12-19

Applicant: IMEC VZW

Inventor： Bruno Figeys ,  Jon Kjellman ,  Roelof Jansen

IPC: G02B6/12 ,  G02B6/13

CPC classification number: G02B6/12014 ,  G02B6/12016 ,  G02B6/13

Abstract: Example embodiments relate to multilevel coupling for phase front engineering. An example integrated optical structure for phase front engineering of optical beams includes a substrate. The integrated optical structure also includes a plurality of optical layers formed on the substrate. Each of the optical layers includes an optical phased array that includes a plurality of optical waveguides. Each of the optical layers also includes a coupling section for each of the optical waveguides. Each coupling section is configured to control the phase of an optical beam coupling out of the optical waveguide. Additionally, the integrated optical structure includes a slab waveguide formed on the substrate and between two of the optical layers. The slab waveguide is in optical communication with the coupling sections of the two optical layers. The slab waveguide includes a slab waveguide outcoupling structure.

公开(公告)号：US20230194781A1

公开(公告)日：2023-06-22

申请号：US18067985

申请日：2022-12-19

Applicant: IMEC VZW

Inventor： Bruno Figeys ,  Jon Kjellman ,  Roelof Jansen

IPC: G02B6/12 ,  G02B6/13

CPC classification number: G02B6/12014 ,  G02B6/12016 ,  G02B6/13

Abstract: Example embodiments relate to multilevel coupling for phase front engineering. An example integrated optical structure for phase front engineering of optical beams includes a substrate. The integrated optical structure also includes a plurality of optical layers formed on the substrate. Each of the optical layers includes an optical phased array that includes a plurality of optical waveguides. Each of the optical layers also includes a coupling section for each of the optical waveguides. Each coupling section is configured to control the phase of an optical beam coupling out of the optical waveguide. Additionally, the integrated optical structure includes a slab waveguide formed on the substrate and between two of the optical layers. The slab waveguide is in optical communication with the coupling sections of the two optical layers. The slab waveguide includes a slab waveguide outcoupling structure.