公开(公告)号：US20230194780A1

公开(公告)日：2023-06-22

申请号：US18066041

申请日：2022-12-14

Applicant: IMEC VZW

Inventor： Jeonghwan Song ,  Marcus Dahlem

IPC: G02B6/12 ,  G02B6/124

CPC classification number: G02B6/12007 ,  G02B6/124 ,  G02B2006/12104 ,  G02B2006/12164 ,  G02B2006/12159 ,  G02B2006/1209

Abstract: An integrated optical structure for multiplexing and/or demultiplexing an optical signal comprises a main waveguide having two parallel side surfaces, a first waveguide which meets the main waveguide at a first region on one of the two side surfaces, and a plurality of second waveguides which meet the main waveguide at a second region on one of the two side surfaces. The second region is spaced at a determined distance from the first region. The two side surfaces are arranged at a first angle relative to an extension direction of the first waveguide and a second angle relative to extension directions of the plurality of second waveguides. The optical structure further comprises one or more waveguide extension structures. Each waveguide extension structure is arranged adjacent to one of the two side surfaces of the main waveguide at a region that is different to the first and the second region.

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.